Vq37vhr мануал по ремонту - Arganabio.ru - инструкции по эксплуатации и многое другое

Руководство в электронном виде по устройству, ремонту, техобслуживанию, диагностике неисправностей и устранению проблем в двигателе Nissan VQ37VHR.

Силовой агрегат VQ37VHR устанавливается на ряд моделей Ниссан, Инфинити и Мицубиши. Это бензиновый шестицилиндровый V-образный DOHC мотор объемом 3.7 литра с системой VVEL.

Мануал по ремонту мотора VQ37VHR приводит описание ремонта двигателя (в том числе и капитального), проблем, меток ГРМ, кодов неисправностей DTC, а также схемы электрооборудования.

Двигатель VQ37VHR устанавливается на следующие автомобили:

INFINITI G37 2008 — 2013
INFINITI Q50 2014 — 2015
INFINITI Q60 2014 — 2016
INFINITI M37 2011 — 2013
INFINITI Q70 2014 — 2018
INFINITI EX37 2009 — 2013
INFINITI QX50 2014 — 2017
INFINITI FX37 2009 — 2013
INFINITI QX70 2014 — 2017
NISSAN Skyline 2008 — н.в.
NISSAN Fuga 2009 — н.в.
NISSAN 370Z 2009 — н.в.
MITSUBISHI Proudia 2012 — н.в.

Язык инструкции: русский
Страниц всего: 132

VQ37VHR: руководство по ремонту скачать

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Источник

Всем привет! Приготовьтесь, будет много букв!

Начнем. Должен был написать этот пост еще около полу года назад, но как-то руки не доходили. Все было сделано своими руками.

Когда брал машину, знал о проблеме падения давления в масляной системе из-за «выдутых пистолетов», спустя время решено было произвести замер этого самого давления. Результат был ожидаемый, но не самый приятный. ИТОГ: на горячую 0.2 бара, при норме 1-1.1 бар!

Машину сразу же поставил в гараж, слил масло. Были обнаружены золотые блестки и вкрапления в масле. НО, забегая вперед, напишу, что в итоге -ВСЕ ХОРОШО). Но, на тот момент, я был в трауре и приступил к разбору сердца своего Финика и самыми не спокойными мыслями.

Почитал людей, казалось чем-то не реальным, из возможных удобств только гараж, инструмент и яма.

Начинаем разбор, фото делал по мере возможности:

Полный размер

— Для начала, сливаем масло с ДВС и снимаем малый поддон, обнаруживаем в маслоприемнике куски

— Снимаем с верху весь декоративный пластик, открываем крышку антифриза и спускаемся обратно для его слива.

Полный размер

— После слива всего ОЖ приступаем к демонтажу патрубков ОЖ, бачков и так далее, снимаем все, что видит взор, это все будет мешать.

— Откручиваем трубку с интегрированной заливной горловиной, затем рывком тянем ее на себя, она сидит на уплотнителях, есть два варианта ее отсоединения, либо отсоединится сама горловина, а трубка останется, либо достанется горловина вместе с трубкой, разница не велика, для собственного успокоения будет не обходимо поменять оба уплотнителя этой трубки.

легко можно открутить только левую(по ходу авто)</b>, правая крышка подперта системой вспомогательных ремней и НИКАК нельзя ее достать, не открутив и демонтировав эту систему. Попутно, естественно, отсоединяем многочисленные разъемы.»>

— Снимаем ремень, ролики, натяжитель вспомогательных агрегатов, откручиваем насос ГУРа и оттягиваем его к телевизору, где закрепляем(забегая вперед, скажу, что жидкость ГУР слить тоже нужно).

-Только после полного снятия с лобовины всего навесного, открывается возможность демонтажа правой крышки фазовращателя, до этого момента откручивать ее смысла не имеет.

-Далее, снимаем генератор и откручиваем компрессор кондиционера, выпускать фреон НЕ НУЖНО, все отгибается и доступ ко всему есть, читал посты, что люди выпускали фреон, оказалось-ЗРЯ. Отдельное внимание заслуживают болты компрессора, чтобы открутить их нужны щупальца и очень много мата. Ключи туда практически никакие не лезут, а головка болта может за просто «слизаться», нужно учитывать это и четко работать инструментом не поддаваясь эмоциям, а то останется компрессор на своем месте на вечно(по крайней мере до снятия мотора целиком).

-Отдельное внимание заслуживает шкив коленвала, который закручен с исполинской силой, и чтоб открутить его,

Полный размер

мне потребовался рычаг в виде трубы с наваренной кувалдой

и богатырская силушка, сорвал я его тоже далеко не с первого раза, тяжкое занятие.

Полный размер

Так же заклинил шкив ломом и упер в край ямы.

-Наконец добрались до лицевой плиты мотора, откручиваем овер дохера болтов, читал, что нужно их помечать, помечал их цветом, т.к. болты разные, но по итогу никакого смысла в этом не увидел, посоветовал бы от нее просто сложить болты в отдельную коробку. При чем, есть пара болтов, которые откручиваются через масляный поддон.

—

Пред нами предстал виновник торжества,

но работа далекооо не закончена»>

— Домкратим морду целиком, снимаем колеса, ставим финик на пни(не всегда ему на красивых тапках стоять), начинаем снимать привода(срываем центральный болт, откручиваем нижнюю шаровую и выбиваем ее, затем уводим в сторону стойку, не забываем открутить рулевой наконечник и выбить его тоже, достаем привод из ступицы.) У редуктора привод держится на болтах, откручиваем их, предварительно слив масло с редуктора, достаем привод с обеих сторон.).

-Фишка снятия приводов в том, что верхний(большой поддон) НЕВОЗМОЖНО снять на полноприводной версии без демонтажа приводов и самого редуктора, поверьте, я пытался, фишка в том, что редуктор входит в поддон и держит его мертво.

-На данном этапе стоит задача демонтажа подрамника, самая тяжелая работа, именно по весу, нижние рычаги его мы освободили,

держат его 4 гайки и 2 или 4 болта

, но перед этим необходимо снять усилитель, который находится снизу бампера(примерно в форме буквы П, если я правильно помню, там еще какой то пластик есть, держится этот усилитель на 4 болтах, если его не снять, то подрамник повиснет и просто не опустится. Так же не забываем про рулевой кардан, его мы ослабляем и по мере опускания подрамника делаем пометку о местоположении кардана относительно шлицевой.
В добавок, не забываем о подушке мотора, которая тоже должна быть демонтирована.
После всех манипуляций начинаем откручивать равномерно все болты, подпирая подрамник домкратами и опускаем его так же равномерно. Так же, попутно при открытии доступа отцепляем все возможные шланги и провода от подрамника, чтоб не порвать. Внимательно следим за трубками рейки, одну нужно открутить почти сразу, т.к. она жесткая, вторую трубку можно открутить уже на земле, т.к. бОльшая ее часть гибкая. Сняли-вытащили подальше, чтобы не мешал.

-Соответственно демонтируем редуктор, откручиваем от него кардан(предварительно пометив сочленение хвостовика редуктора и кардана, чтобы поставить как и было), откручиваем все возможные болты, которые его держат, если не изменяет память, их около 7, так же не забываем снять шланг сапуна с макушки редуктора,

после чего отводим редуктор в бок, вытаскивая его из поддона и убираем восвояси, чтоб не мешал.

-Далее откручиваем опять овер дохера болтов от верхнего поддона

, плюс там есть два тайных болта (у венца маховика),

после чего большой поддон легко демонтируется и взору открывается коленвал, шатуны и <img src=

«>

-Далее все как в обычном авто, начинаем демонтировать крышки шатунов и

доставать вкладыши, внешний вид которых был удручающий

, НО, я успел, пострадали только и только они, шейки коленвала были в отличном состоянии! Проделываем операцию замены со всеми 6 шатунами, обратную сборку производим со специальной монтажной смазкой(к слову, у меня такого в городе никто не знал, пришлось попотеть чтобы ее добыть)…

Источник

Factory Workshop Manual
Make
Infiniti
Model
G37 Coupe
Engine and year
V6-3.7L (VQ37VHR) (2008)

Please navigate through the PDF using the options
provided by OnlyManuals.com on the sidebar.

This manual was submitted by
Anonymous
Date
1st January 2018

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Navigation Module > Component Information > Technical Service Bulletins >
Navigation System — HDD Navigation Map Data Updating

Technical Service Bulletin # 08-021B Date: 091211
Navigation System — HDD Navigation Map Data Updating
Classification: EL08-002B
Reference: ITB08-021B
Date: December 11, 2009
UPGRADING HDD NAVIGATION MAP DATA

APPLIED VEHICLES
SERVICE INFORMATION
The navigation system (if equipped) in the Applied Vehicles listed above has a HDD (Hard Disc
Drive) map data storage system. This bulletin contains the information and instructions for
updating/upgrading the map data with a new version.
An instruction manual for HDD Navigation Updates is also available in ASIST under
INFORMATION TOOL BOX > HD Navi. Tools > Hard Drive Navigation Update Manual.
When new versions of map data are available, customers can purchase a Coupon Number via the
internet or by calling NAVTEQ. The customer then takes their vehicle, along with the Coupon
Number, to an Infiniti dealer to have the new version of map data installed into their navigation
system. The time needed to install the new map data into the vehicle is approximately 30 minutes.
The HDD update kit (P/N: J-48850) is required to perform map data updates. One HDD update kit
was shipped to each dealer as part of the essential tool program. Refer to «HDD update kit (P/N:
J-48850-A) for kit details.
Make sure to use the newest Map Data Master Discs (2 disc set) when performing HDD Navigation
Map Data Upgrades.
^ As of the publication date of this bulletin, the newest disc set is 2010MY (09-10).
^ Additional Master Discs are available from TECH-MATE.
Information
IMPORTANT:
^ Make sure your ASIST has been freshly synchronized and all C-III upgrades have been installed.
(The HDD (Hard Disc Drive) rewrite software is
delivered via ASIST synchronization).
^ Before the map upgrade can be performed, a Coupon Number must be purchased from the web
or by calling NAVTEQ.
^ Before starting, it is recommend that you check the Current Map Version in the vehicle using the
vehicle’s navigation screen to make sure an upgrade
is needed (Refer to «Checking Current Map Version in the Vehicle Using the Vehicle’s Navigation
Screen»).
Overview of the HDD (Hard Disc Drive) Map Upgrade

This procedure is divided into 7 sections. Complete each section in the order shown above.

Section 1 — Installing Updated MAP Into Consult-III
SECTION 1: INSTALLING THE UPDATE MAP INTO THE C-III
^ Once the newest version is installed into the C-III computer it can be used to upgrade many HDD
navigation systems. It is not necessary to install the
updated map each time you perform a map data upgrade.
^ If the newest map data is already installed in your C-III computer, you can skip to Section 2.
1. Connect the C-III DVD drive to the C-III computer with the USB cable.
2. Turn ON the C-III computer.
3. Open / start ASIST.

4. Select Information Tool Box and HD Navi. Tools.

5. Select Install Map Update

6. Select Installing updated map

7. Insert the Map Data Master Disc 1 into the C-III DVD drive.
8. Confirm the correct name of the DVD drive is displayed (see Figure 1-5).
^ «E» is likely the correct name for the DVD drive.
^ The DVD drive name may be different depending on the drive configuration of your C-III
computer.
9. Select START
^ Installation of the update map will start and a progress screen will display.
^ Installation will take several minutes.
^ At about 35% this message will display:

^ When you get the above message, remove Disc 1; install Disc 2; then select YES.

^ When installation is complete the screen shown in Figure 1-8 will display.
10. Select OK

11. Select EXIT

12. Remove Disc 2 from the DVD drive.
13. Select the Safely Remove Hardware icon on the «system tray» which is displayed in the bottom
right of the C-III computer screen.
^ You may need to click on the «expand arrow» to expand the icon selections.
14. Select Safely remove USB Mass Storage Device — Drive (E:)
^ The drive name will likely be E, but may be different depending on the drive configuration of your
C-III computer.

15. Disconnect the C-III DVD drive from the C-III computer.

Section 2 — Connecting C-III to Hdd Navigation System
SECTION 2: CONNECTING C-III TO THE HDD NAVIGATION SYSTEM
^ All navigation components must be installed in the vehicle and connected correctly.
^ Make sure the vehicle battery is charged and connected.
^ Do not touch the CF (Compact Flash) adapter with wet hands.
CAUTION:
^ Do not turn the ignition ON when the C-III computer is connected to the navigation system with
the CF (Compact Flash) adapter.
^ Obey the following instructions; otherwise the CF Adapter, CF card slot, or navigation system
may be damaged.
1. Make sure the ignition is OFF.
2. Close any applications that are running on the C-III computer.
^ If the C-III computer is OFF, leave it OFF for now.
3. Connect USB cable to the C-III computer.
^ Make sure connector is fully inserted.

4. Connect the other end of the USB cable to the CF (Compact Flash) adapter.
^ Make sure connector is fully inserted.
5. Carefully insert the CF adapter into the CF card slot of the vehicle audio/navigation system.
^ Label side UP.
^ Insert it all the way (firmly), to its stop.
Section 3 — Generating Certification Number
SECTION 3: GENERATING THE CERTIFICATION NUMBER
^ The Certification Number is different for each HDD (Hard Disc Drive) navigation system. Make
sure you are connected with the CF adaptor to the
system (vehicle) that you will be updating.

1. Turn ON the C-III computer.
2. Open / start ASIST.

3. Select Information Tool Box and HD Navi. Tools.

4. Select Install Map Update

5. Select Generation and confirmation of Certification number.

NOTE:
If the HDD Rewrite application was open/running when you connected to the navigation system
(plugged in the CF adapter), the navigation system may not be recognized and you may get an
error message. In this case, exit/close ASIST, then start it again (reopen it).
6. Click START

NOTE:
^ If you get the message shown in Figure 3-5:
^ The map data installed in your C-III computer is the same or older than the map data in the
vehicle. The map update may not be needed.
a. Skip to Section 6 (disconnect C-III from the vehicle navigation system).
b. Check the map version in the vehicle (Refer to «Checking Current Map Version in the Vehicle
Using the vehicle’s Navigation Screen»).
7. Write down the Certification Number.
8. Select OK
Section 4 — Acquiring the Install Key
SECTION 4: ACQUIRING THE INSTALL KEY
^ Before starting this section, you need:
> A Coupon Number (purchased from NAVTEQ via the internet or by calling NAVTEQ.

> A Certification No. (generated from the vehicle HDD navigation unit in Section 3).
^ Your C-III computer must be connected to the Internet for this Section.
NOTE:
This section can also be done at your desktop ASIST or any computer with an Internet connection.
The internet address is https://www.nissan-mapupdate.com/cgi-bin/EN/N/HLPS0200.cgi
^ To access the license server to acquire an Install Key (Install Code), your Internet browser must
be set to accept cookies.
^ Once you have acquired the Install Key from the license server, cancellation and reissue of the
Install Key is not allowed.
^ The acquired Install Key is valid for only three days from the date of issue.
^ You can retry the upgrade operation by using the same Install Key at any time during the three
day period, but it cannot be used after the three day
period has expired.
^ If you forgot the Install Key during the three day period, you can obtain the same Key by
performing this section again. The key is still only valid for 3

days from the original date of issue.

1. Select Information Tool Box and HD Navi. Tools.
2. Select Obtain Install Key #

3. Enter UserID and Password.

4. Select Login
5. Enter the following numbers correctly (see Figure 4-4):

^ Coupon No. (Coupon No. purchased from NAVTEQ)
^ Today’s Date
^ Certification No. (number generated from vehicle HDD navigation unit in Section 3)
6. Select CONTINUE
7. On the next screen (Confirmation of Install Key Request), confirm all the numbers you entered
are correct. (see Figure 4-5).
8. Select ISSUE

9. Select PRINT to print the screen, or write down the Install Key exactly.
10. After printing the screen or writing down the Install Key, select COMPLETED.
11. Close the internet window.
Section 5 — Upgrading Map Data In Hdd Navigation System
SECTION 5: UPGRADING THE MAP DATA IN THE HDD NAVIGATION SYSTEM
^ Make sure to perform this operation on the same HDD navigation unit (vehicle) from which you
generated the Certification Number.
^ Upgrading the map data cannot be performed by using an Install Key that was acquired by using
a Certification Number generated from a different
HDD navigation system.
^ Make sure to use the same C-III that was used to generate the Certification Number.

1. Connect the C-III computer power cord (A.C. adapter or vehicle D.C. adapter).
^ Updating the map data will take a few minutes. Connecting the power cord will ensure the C-III
computer maintains power during the update.
^ Vehicle ignition must remain OFF.

2. Select Information Tool Box and HD Navi. Tools.

3. Select Install Map Update

4. Select Map update

5. Select NEXT

6. Carefully enter the Install Key.
7. Select NEXT
8. Confirm the version number of «New version of map data» is higher than «Current version of map
data».
9. Select START

^ Map update will begin and a progress bar will be displayed as shown in Figure 5-7.

^ When update is complete the screen in Figure 5-8 will display.
10. Select OK
NOTE:
If the update does not complete correctly, do the following:
a. Perform Section 6: Disconnecting the C-III and CF Adaptor.
b. Make sure the vehicle battery is sufficiently charged.
c. Perform Section 2 again: Connecting C-III to the HDD Navigation System.
d. Perform Section 5 again: Upgrading the Map Data in the HDD Navigation System.
Section 6 — Disconnecting the C-III/CF (Copmpact Flash) Adapter
SECTION 6: DISCONNECTING C-III and CF (Compact Flash) ADAPTER.
NOTE:

Do not touch the CF (Compact Flash) adapter with wet hands.

1. Select EXIT
2 Select the Safely Remove Hardware icon on the «system tray» which is displayed in the bottom
right of the C-III computer screen.
^ You may need to click on the «expand arrow» to expand the icon selections.
3. Select Safely remove USB Mass Storage Device

4. After the message «Safe to Remove Hardware» is displayed, disconnect the USB cable from the
C-III computer.

5. Push the Eject button at the right of the CF card slot and carefully remove the CF adapter.
NOTE:
When not in use, store the CF adapter in its original plastic bag.
Section 7 — Verifing Upgrade Results
SECTION 7: VERIFYING THE UPGRADE RESULT
^ When the map data upgrade operation is complete, confirm that the HDD navigation system is
operating correctly.
^ Make sure the CF adapter is disconnected from the navigation system before performing the
following steps.
1. Turn the ignition ON.
^ If the ignition is already ON, turn it OFF and then back ON.
2. The Program Loading screen as shown in Figure 7-1 will display.
^ This process may take only a few seconds to complete or it may take a few minutes.

3. Select MAP, then ENTER.
^ Make sure the navigation map displays and the system functions correctly.
NOTE:
You can confirm the new map version in the vehicle using the navigation screen; refer to «Checking
Current map Version in the vehicle using the Vehicle’s navigation Screen».
^ If the fail-safe screen is displayed as shown in Figure 7-3, the map data upgrade failed.
^ Turn the ignition OFF; return to the beginning of the Service Procedure and follow all steps again
exactly as written.
Checking Current MAP Version In Vehicle Using Navigation Screen
Checking Current Map Version in the Vehicle Using the Vehicle’s Navigation Screen
^ Make sure the CF (Compact Flash) adapter is disconnected from the navigation system before
performing the following steps.
1. Turn the Ignition to ON or ACC, and turn ON the navigation system.

2. Select INFO

3. Use the arrows and enter buttons on the Infiniti Controller to select Navigation Version.
^ The navigation / map version displays as shown in Figure 8-3.
HDD Update Kit (P/N: J-48850-A)
HDD update kit (P/N: J-48850)

Kit Contents:
A. HDD Rewrite software (obsolete now available via ASIST synchronization)
B. 07-08 HDD Data Upgrade Master Disc 1 & 2 (superseded by 2010MY (09-10) discs).
C. CF (Compact Flash) Adapter
D. USB cable
^ New kits can be purchased from TECH-MATE.

Navigation Module: Service and Repair
ON-VEHICLE REPAIR
PRESET SWITCH
DISASSEMBLY
VTL-23 Exploded View
Removal and Installation
REMOVAL
Refer to «Removal and Installation» (BASE AUDIO WITHOUT NAVIGATION), «Removal and
Installation» (BOSE AUDIO WITHOUT NAVIGATION), «Removal and Installation» (BOSE AUDIO
WITH NAVIGATION).
INSTALLATION
Installation is basically the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Rear View
Monitor System

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Rear View
Monitor System > Page 36

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Rear View
Monitor System > Page 37

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Rear View
Monitor System > Page 38

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Page 39

Parking Assist Control Module: Adjustments
Adjustment
ADJUSTMENT
There may be a misalignment of possible route line center position of rear view monitor after
removing camera control unit. Therefore, correct neutral position with the following procedure.
1. Steer the steering wheel to the left-most and right-most ends. 2. Drive vehicle at 30 km/h (18.6
MPH) min. speed at least 100 m (328.1 ft).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Accessories and Optional Equipment > Parking Assist Control Module > Component Information > Locations > Page 40

Parking Assist Control Module: Service and Repair
BOSE AUDIO WITH NAVIGATION
CAMERA CONTROL UNIT
Exploded View
AV-629 Exploded View
Removal and Installation
REMOVAL
1. Remove rear wheel house finisher (RH), and then remove camera control unit.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Memory Positioning Module > Component Information > Service and Repair

Memory Positioning Module: Service and Repair
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Remove battery negative terminal.
2. Remove instrument driver lower panel. 3. Remove screws (A). 4. Remove automatic drive
positioner control unit (1).
INSTALLATION
Install in reverse order of removal.
CAUTION: Be sure to clump the harness to the right place.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Control Module > Component Information > Service and Repair > Driver Seat Control Unit

Power Seat Control Module: Service and Repair Driver Seat Control Unit
DRIVER SEAT CONTROL UNIT
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Remove driver seat (1). 2. Remove mounting bolts (A). 3. Remove driver seat control unit (2).
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clump the harness to the right place.
NOTE: After installing the driver seat, perform additional service when replacing control unit. Refer
to See: Body and Frame/Seats/Testing and Inspection/Programming and Relearning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Control Module > Component Information > Service and Repair > Driver Seat Control Unit > Page
49

Power Seat Control Module: Service and Repair Passenger Seat Control Unit

PASSENGER SEAT CONTROL UNIT
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
NOTE: The same procedure is also performed for driver side.
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clamp the harness to the right place.
NOTE: After installing the driver seat, perform additional service when replacing control unit. Refer
to See: Body and Frame/Seats/Testing and Inspection/Programming and Relearning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay

Power Seat Relay: Testing and Inspection Reclining Relay
Backward
RECLINING RELAY
BACKWARD
BACKWARD : Diagnosis Procedure
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 54

Step 2-4

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 55

Step 5-7
BACKWARD : Component Inspection (Reclining Relay)
Step 1
BACKWARD : Component Inspection (Diode 2)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 56

Step 1
Step 1 (Continued)
Forward
RECLINING RELAY
FORWARD
FORWARD : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 57

Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 58

Step 3 (Continued)-6
Step 7

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 59

FORWARD : Component Inspection (Reclining Relay)
Step 1
FORWARD : Component Inspection (Diode 1)
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 60

Power Seat Relay: Testing and Inspection Sliding Relay
Backward
SLIDING RELAY
BACKWARD
BACKWARD : Diagnosis Procedure

Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 61

Step 3 (Continued)-6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 62

Step 6 (Continued)-8
BACKWARD : Component Inspection (Sliding Relay)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 63

Step 1
Forward
SLIDING RELAY
FORWARD
FORWARD : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 64

Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 65

Step 3 (Continued)-6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 66

Step 6 (Continued)-8
FORWARD : Component Inspection (Sliding Relay)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Power Seat Relay > Component Information > Testing and Inspection > Reclining Relay > Page 67

Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Body
and Frame > Sunroof / Moonroof Module > Component Information > Testing and Inspection

Sunroof / Moonroof Module: Testing and Inspection
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
MEMORY RESET PROCEDURE
1. Please observe the following instructions at confirming the sunroof operation.
NOTE: Do not disconnect the electronic power while the sunroof is operating or within 5 seconds
after the sunroof stops (to wipe-out the memory of lid position and operating friction.)
2. Initialization of system should be conducted after the following conditions.
— When the sunroof motor is changed.
— When the sunroof does not operate normally. (Incomplete initialization conditions)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Requirement
INITIALIZATION PROCEDURE
If the sunroof does not close or open automatically, use the following procedure to return sunroof
operation to normal.
1. Press the tilt up switch and start the tilt up operation. 2. Release the tilt up switch once, press the
tilt up switch again, press and hold the switch until lid pops up. 3. The glass lid will more toward tilt
up direction and will be stopped mechanically, and then it will be automatically fully closed. (press
and hold the
switch during this operation)
4. Release the switch again, and press the tilt up switch within the first 10 seconds. (press and hold
the switch) 5. After 4 seconds, the glass lid will be automatically operated in sequence of tilt down,
slide open and slide close. 6. After the glass lid stops, release the switch 0.5 second later. (press
and hold the switch during this operation) 7. If slide switch operates normally, this initialization is
done.
ANTI-PINCH FUNCTION
1. Full open the sunroof. 2. Place a piece of wood near fully closed position. 3. Close the sunroof
completely with auto-slide close.
Check that sunroof lowers for approximately 150 mm (5.91in) or 2 seconds with out pinching a
piece of wood and stops.
CAUTION: Do not check with hands and other part of body because they may be pinched. Do not get pinched.
— Depending on environment and driving conditions, if a similar impact or lord is applied to the
sunroof it may lower.
— Check that auto-slide operates before inspection when system initialization is performed.
— Perform initial setting when auto-slide operation or anti-pinch function does not operate normally.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > Customer
Interest: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON

Electronic Brake Control Module: Customer Interest Brakes — DTC C1142/ABS, SLIP, VDC OFF
Lamps ON
Classification: BR08-007
Reference: ITB09-007
Date: January 30, 2009
ABS DTC C1142 STORED
APPLIED VEHICLES: 2007 — 2008 G35 Sedan (V36) 2007 G35 Coupe (CV35) 2009 G37 Sedan
(V36) 2008 — 2009 G37 Coupe (CV36) 2006 — 2009 M35/M45 (Y50)
IF YOU CONFIRM
DTC code C1142 is stored in the ABS system,
NOTE:
If code C1142 is stored, the ABS, SLIP, and VDC OFF lights will likely be ON.
ACTIONS
Follow the flow chart in the Service Procedure for diagnostic and repair steps.
NOTE:
Make sure the brake pedal and stop lamp switch adjustments are correct, and the stop lamp switch
and circuit are operating correctly before replacing the ABS Actuator and Electronic Control Unit.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

CLAIMS INFORMATION

SERVICE PROCEDURE

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic
Information

Electronic Brake Control Module: All Technical Service Bulletins ABS/TCS — CAN Diagnostic
Information

Classification: BR10-012
Reference: ITB10-074
Date: December 15, 2010
ABS / VDC CAN DIAGNOSIS INFORMATION
APPLIED VEHICLES: All 2005 — 2011 Infiniti vehicles with ABS and/or VDC
SERVICE INFORMATION
When diagnosing a vehicle with an ABS or VDC / SLIP warning light on with DTCs stored in the
ABS / VDC actuator control unit perform DTC diagnosis first.
^ Do not replace the ABS / VDC actuator control unit without being supported by the DTC
diagnosis.
^ Do not erase DTCS before performing DTC diagnosis.
^ Always fully diagnose before performing any repairs.
When DTC U1000 (CAN COMM CIRCUIT) is the only DTC stored in the ABS / VDC actuator
control unit use the REPAIR FLOW CHART shown below. This will assist in proper diagnosis
results and repairs in addition to using diagnostic information in the Electronic Service Manual
(ESM).
^ If DTC U1000 is found stored in other systems refer to NTB10-066 and the applicable ESM.
^ If other DTCs are found stored in ABS / VDC along with U1000 follow the diagnosis steps for
those DTCs in the applicable ESM.
CLAIMS INFORMATION
Refer to the current Infiniti Warranty Flat Rate Manual and use the appropriate claims coding for
repairs performed.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic
Information > Page 88

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic
Information > Page 89

Repair Flow Chart

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP,
VDC OFF Lamps ON

Electronic Brake Control Module: All Technical Service Bulletins Brakes — DTC C1142/ABS, SLIP,
VDC OFF Lamps ON
Classification: BR08-007
Reference: ITB09-007
Date: January 30, 2009
ABS DTC C1142 STORED
APPLIED VEHICLES: 2007 — 2008 G35 Sedan (V36) 2007 G35 Coupe (CV35) 2009 G37 Sedan
(V36) 2008 — 2009 G37 Coupe (CV36) 2006 — 2009 M35/M45 (Y50)
IF YOU CONFIRM
DTC code C1142 is stored in the ABS system,
NOTE:
If code C1142 is stored, the ABS, SLIP, and VDC OFF lights will likely be ON.
ACTIONS
Follow the flow chart in the Service Procedure for diagnostic and repair steps.
NOTE:
Make sure the brake pedal and stop lamp switch adjustments are correct, and the stop lamp switch
and circuit are operating correctly before replacing the ABS Actuator and Electronic Control Unit.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP,
VDC OFF Lamps ON > Page 94

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP,
VDC OFF Lamps ON > Page 95

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Electronic Brake Control Module: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP,
VDC OFF Lamps ON > Page 96

SERVICE PROCEDURE

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All Other
Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic Information

Electronic Brake Control Module: All Technical Service Bulletins ABS/TCS — CAN Diagnostic
Information

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All Other
Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic Information >
Page 102

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All Other
Service Bulletins for Electronic Brake Control Module: > 10-074 > Dec > 10 > ABS/TCS — CAN Diagnostic Information >
Page 103

Repair Flow Chart

Electronic Brake Control Module: Locations For USA

Electronic Brake Control Module: Testing and Inspection
VALUES ON THE DIAGNOSIS TOOL
CAUTION: The display shows the control unit calculation data, so a normal value might be
displayed even in the event the output circuit (harness) is open or short-circuited.
CONSULT-III MONITOR ITEM (Part 1)

CONSULT-III MONITOR ITEM (Part 2)

CONSULT-III MONITOR ITEM (Part 3)

CONSULT-III MONITOR ITEM (Part 4)

Electronic Brake Control Module: Service and Repair
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
After replacing the ABS actuator and electric unit (control unit), perform the neutral position
adjustment for the steering angle sensor.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Special Repair Requirement
1.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
Perform the neutral position adjustment for the steering angle sensor.
>> Refer to BRC-8, «ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION:
Special Repair Requirement». See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Steering Angle Sensor/Adjustments

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > ABS/TCS — CAN
Diagnostic Information

Traction Control Module: Technical Service Bulletins ABS/TCS — CAN Diagnostic Information

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > ABS/TCS — CAN
Diagnostic Information > Page 116

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Brakes
and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > ABS/TCS — CAN
Diagnostic Information > Page 117

Repair Flow Chart

Traction Control Module: Locations VDC

Traction Control Module: Locations TCS

Traction Control Module: Locations ABS

Traction Control Module: Locations EBD

Traction Control Module: Service and Repair
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-102 Exploded View
Removal and Installation
REMOVAL
CAUTION: ^
Before servicing, disconnect the battery cable from negative terminal.

^ To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being
damaged. To install, use flare nut crowfoot and torque wrench.
^ Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
^ Do not remove and install actuator by holding harness.
^ After work is completed, bleed air from brake tube.
1. Remove cowl top cover. 2. Disconnect ABS actuator and electric unit (control unit) connector. 3.
Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control
unit). 4. Remove tire (front LH side). 5. Remove fender protector (rear): (front LH side). 6. Remove
ABS actuator and electric unit (control unit) bracket mounting nut. 7. Remove ABS actuator and
electric unit (control unit) from vehicle.
INSTALLATION
Note the following, and install in the reverse order of removal.

CAUTION: ^
Before servicing, disconnect the battery cable from negative terminal.
^ To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being
damaged. To install, use flare nut crowfoot and torque wrench.
^ Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.
^ Do not remove and install actuator by holding harness.
^ After work is completed, bleed air from brake tube.
^ After installing harness connector in the ABS actuator and electric unit (control unit), make sure
connector is securely locked.
^ When replacing ABS actuator and electric unit (control unit), make sure to adjust neutral position
of steering angle sensor. Refer to BRC-8, «ADJUSTMENT OF STEERING ANGLE SENSOR
NEUTRAL POSITION: Description». See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Steering Angle Sensor/Adjustments

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Cruise
Control > Cruise Control Module > Component Information > Service and Repair

Cruise Control Module: Service and Repair
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
Always perform the laser beam aiming adjustment after replacing the ICC sensor integrated unit. In
addition, test the ICC system operations to see if it functions normally.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Special Repair Requirement
Step 1-2

Cruise Control Relay: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Cruise
Control > Cruise Control Relay > Component Information > Locations > Page 137

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations

Headlamp Alignment Control Module: Service and Repair
AFS CONTROL UNIT
Exploded View
EXL-196 Exploded View
Removal and Installation
REMOVAL
1. Remove the instrument driver lower panel. 2. Remove the instrument finisher A. 3. Remove AFS
control unit mounting bolt. 4. Disconnect AFS control unit connector. 5. Remove AFS control unit.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Lighting and Horns > Headlamp Control Module > Component Information > Technical Service Bulletins > Lighting — Xenon
Headlamp Service Info.

Headlamp Control Module: Technical Service Bulletins Lighting — Xenon Headlamp Service Info.
Classification: EL10-022A
Reference: ITB10-027A
Date: June 29, 2010
XENON HEAD LAMP SERVICE
This bulletin has been amended. The Parts Information has been updated. Please discard previous
versions of this bulletin.
APPLIED VEHICLES: 2005 — 2011 Infiniti with xenon headlamps
IF YOU CONFIRM
A xenon headlamp is not functioning because of an issue inside the headlamp assembly (an
internal issue),
ACTION
Refer to the appropriate Service Manual, follow the diagnostic and repair information for xenon
headlamps.

NOTE:
^ In most cases, replacement of a bulb or HID control unit will solve the incident.
^ Do not replace the entire xenon headlamp assembly when a bulb or HID control unit is available
to solve the incident, if one should occur.
CLAIMS INFORMATION
^ Reference the current Nissan Flat Rate Manual and use the appropriate claims coding for the
repair performed.
^ For HID control unit replacement use Operation Code RJ36AA.
PARTS INFORMATION

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Lighting and Horns > Headlamp Control Module > Component Information > Technical Service Bulletins > Lighting — Xenon
Headlamp Service Info. > Page 147

NOTE:
^ The HID control unit includes a starter (xenon bulb socket). For some models, the starter is not
replaceable. In this case, replace only the HID control
unit using the old starter.
^ Torque specification for the screw that holds the starter to the HID control unit is:
^ 1.3 — 1.7 Nm (0.13 — 0.17 k-gm, 12 — 15 in-lb)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Module > Component Information > Technical Service Bulletins > Computers
Controls — IPDM Serviceability

Power Distribution Module: Technical Service Bulletins Computers Controls — IPDM Serviceability
Classification: EL09-015
Reference: ITB09-022
Date: April 27, 2009
IPDM SERVICE
APPLIED VEHICLES: 2007 — 2009 Infiniti Models with IPDM
SERVICE INFORMATION
The Intelligent Power Distribution Module (IPDM) is ONLY serviceable as an assembly.
The ONLY serviceable parts of an IPDM are the fuses.
^ Some IPDM designs have sections that appear to Relays Relays be serviceable relays.
^ These «relays» are NEVER to be removed.
^ These «relays» may have markings indicating they are similar. They are not «swappable».
CAUTION:
NEVER REMOVE relays from an IPDM.

Tampering with the relays of an IPDM may cause additional incidents with the vehicle. Such
incidents may include:
^ Headlights inoperative.
^ Radiator fan inoperative
^ Fog lamps inoperative
^ Wiper inoperative

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System

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and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 155

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 156

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 157

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 158

Power Distribution Module: Locations

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and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 159

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and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 160

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and Ground Distribution > Power Distribution Module > Component Information > Locations > Power Generation Voltage
Variable Control System > Page 161

Power Distribution Module: Service and Repair
ON-VEHICLE REPAIR
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Exploded View
PCS-34 Exploded View

Removal and Installation
CAUTION: IPDM E/R integrated relays are not serviceable parts, and must not be removed from
the unit.
REMOVAL
1. Disconnect the battery cable from the negative terminal.
2. Remove cowl top cover (RH). 3. Pull up the IPDM E/R assembly while pressing the pawl (A) on
the back of the IPDM E/R cover B (1).

4. Remove the IPDM E/R cover A while pressing the pawl (A) at the lower end of the IPDM E/R
cover A (1). 5. Disconnect the harness connector and remove IPDM E/R (2).
6. Remove the bolt (A) and remove the bracket (1) from the vehicle.
INSTALLATION
Install in the reverse order of removal.

Power Distribution Relay: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Power Distribution Relay > Component Information > Locations > Page 167

Power Distribution Relay: Description and Operation
STANDARDIZED RELAY

Description
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
TYPE OF STANDARDIZED RELAYS

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and Ground Distribution > Power Distribution Relay > Component Information > Locations > Page 168

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > Customer Interest: > 08-011
> Feb > 08 > Electrical — Relay Box Cover Replacement

Relay Box: Customer Interest Electrical — Relay Box Cover Replacement
Classification: EC07-013
Reference: ITB08-011
Date: February 22, 2008
APPLIED VEHICLE: 2008 G37 (CV36)
APPLIED DATE: Vehicles built before August 31, 2007
APPLIED VIN: Vehicles built before JNKCV64E(*)8M106604
SERVICE INFORMATION
If you are diagnosing issues related to the VVEL system or power to the radiator fans, be advised
the relay cover is incorrectly labeled as shown in Figure 1. Refer to Figure 2 for the correct relay
cover.
NOTE:
Remove and replace the relay box upper cover shown in Figure 1 with the relay box upper cover
listed in the Parts Information section of this bulletin and displayed in Figure 2.
SERVICE PROCEDURE
1. Remove the battery cover. See Figure 3.

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and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > Customer Interest: > 08-011
> Feb > 08 > Electrical — Relay Box Cover Replacement > Page 177

2. Remove 5 clips (A) located on the hood lid cover (B). See Figure 4.
3. Remove the hood lid cover.
4. Refer to Figures 5 and 6 to locate the relay box upper cover.

5. Remove and replace the relay box upper cover.
6. Re-install the hood lid, clips, and battery cover in reverse order of removal.
PARTS INFORMATION
CLAIMS INFORMATION
Submit a Primary Failed Part (PP) line claim using the claims coding shown.
Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Technical Service
Bulletins: > 08-011 > Feb > 08 > Electrical — Relay Box Cover Replacement

Relay Box: All Technical Service Bulletins Electrical — Relay Box Cover Replacement
Classification: EC07-013
Reference: ITB08-011
Date: February 22, 2008
APPLIED VEHICLE: 2008 G37 (CV36)
APPLIED DATE: Vehicles built before August 31, 2007
APPLIED VIN: Vehicles built before JNKCV64E(*)8M106604
SERVICE INFORMATION
If you are diagnosing issues related to the VVEL system or power to the radiator fans, be advised
the relay cover is incorrectly labeled as shown in Figure 1. Refer to Figure 2 for the correct relay
cover.
NOTE:
Remove and replace the relay box upper cover shown in Figure 1 with the relay box upper cover
listed in the Parts Information section of this bulletin and displayed in Figure 2.
SERVICE PROCEDURE
1. Remove the battery cover. See Figure 3.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Technical Service
Bulletins: > 08-011 > Feb > 08 > Electrical — Relay Box Cover Replacement > Page 183

2. Remove 5 clips (A) located on the hood lid cover (B). See Figure 4.
3. Remove the hood lid cover.
4. Refer to Figures 5 and 6 to locate the relay box upper cover.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Other Service Bulletins
for Relay Box: > 10-011A > Oct > 10 > Body — Door Accent Garnish Replacement

Front Door Panel: All Technical Service Bulletins Body — Door Accent Garnish Replacement
Classification: BT09-077A
Reference: ITB10-011A
Date: October 19, 2010
DOOR ACCENT GARNISH REPLACEMENT — NON ALUMINUM
APPLIED VEHICLES: 2006 — 2010 M35/45 (Y50) 2009 — 2011 FX35/50 (S51) 2008 — 2011 EX35
(J50) 2009 — 2011 G37 Sedan (V36) 2008 — 2011 G37 Coupe (CV36) 2009 — 2011 G37 Convertible
(HV36)
IF YOU CONFIRM
An accent garnish on a front or rear door panel (door finisher) needs to be replaced for any reason.
and
Is not an aluminum type garnish.
ACTION
Replace the accent garnish on all door panels:
^ For 2 door vehicle replace garnish on both doors.
^ For 4 door vehicles replace garnish on all 4 doors.
^ Use the kit listed in the Parts Information.
^ Refer to the Service Manual as needed for door panel removal and installation.
NOTE:

^ Do not replace an entire door panel (finisher) when replacing only the accent garnish will solve
the incident should one occur.
^ For vehicles with aluminum garnishes replace only the damaged garnish with the individual part
number listed in the electronic parts catalog (FAST or
equivalent).

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Other Service Bulletins
for Relay Box: > 10-011A > Oct > 10 > Body — Door Accent Garnish Replacement > Page 189

PARTS INFORMATION

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and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Other Service Bulletins
for Relay Box: > 10-011A > Oct > 10 > Body — Door Accent Garnish Replacement > Page 190

CLAIMS INFORMATION

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules — Power
and Ground Distribution > Relay Box > Component Information > Technical Service Bulletins > All Other Service Bulletins
for Relay Box: > 10-011A > Oct > 10 > Body — Door Accent Garnish Replacement > Page 196

PARTS INFORMATION

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for Relay Box: > 10-011A > Oct > 10 > Body — Door Accent Garnish Replacement > Page 197

CLAIMS INFORMATION

Body Control Module: Diagrams
TERMINAL LAYOUT
PHYSICAL VALUES

Terminal And Reference Values (Part 1)

Terminal And Reference Values (Part 2)

Terminal And Reference Values (Part 3)

Terminal And Reference Values (Part 4)

Terminal And Reference Values (Part 5)

Terminal And Reference Values (Part 6)

Terminal And Reference Values (Part 7)

Terminal And Reference Values (Part

Terminal And Reference Values (Part 9)

Terminal And Reference Values (Part 10)

Terminal And Reference Values (Part 11)

Terminal And Reference Values (Part 12)

Terminal And Reference Values (Part 13)

Terminal And Reference Values (Part 14)

Terminal And Reference Values (Part 15)

Terminal And Reference Values (Part 16)

Terminal And Reference Values (Part 17)

Body Control Module: Service and Repair
ON-VEHICLE REPAIR
BCM (BODY CONTROL MODULE)
Exploded View
BCS-79 Exploded View
Removal and Installation
REMOVAL
1. Remove dash side finisher (passenger side). 2. Remove bolt and nut. 3. Remove BCM and
disconnect the connector.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC
P1421 Stored

Engine Control Module: Customer Interest Engine Controls — MIL ON/DTC P1421 Stored
Classification: EC10-038A
Reference: ITB10-076A
Date: April 26, 2011
2008-2010 G37; MIL «ON» WITH DTC P1421 STORED
This bulletin has been amended. Several changes have been made throughout the bulletin. Please
discard all previous versions.
APPLIED VEHICLES: 2008 G37 Coupe (CV36) 2009-2010 G37 Sedan, Coupe & Convertible (V36,
CV36, HV36)
IF YOU CONFIRM
An Applied Vehicle has the MIL ON with DTC P1421 (Cold Start Control) stored in the ECM.
ACTIONS
1. Refer to step 2 in the ECM Reprogramming section of the Service Procedure to confirm this
bulletin applies to the vehicle you are working on.
2. If this bulletin applies reprogram the ECM.
3. If instructed reprogram the TCM.
CLAIMS INFORMATION
IMPORTANT:

The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is
essential to successfully completing this repair.
SERVICE PROCEDURE
ECM Reprogramming
1. Connect C-III to the vehicle to begin the reprogramming procedure.
If you are not familiar with the reprogramming procedure. Refer to «CONSULT-III (C-III) ECM
Reprogramming» general procedure.

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.

A. On your C-III screen look at the Part Number column (see Figure 1):
^ If this column is blank (no part number listed) this bulletin does not apply. Close C-III and refer to
ASIST for further diagnostic information.
^ If a Part Number is listed write it on the Repair Order.

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.
^ If there is a match this bulletin applies. Continue with the reprogramming procedure.
NOTE:
If more than two lines (reprogramming options) display on your C-III screen use the one that does
not have either of the following message:
> «Caution Use ONLY with ITBXX-XXX»
> «Alert! For ECM Recovery ONLY»
^ If there is not a match, this bulletin does not apply. Close C-III and refer to ASIST for further
diagnostic information.

3. If this bulletin applies and you have performed ECM reprogramming the screen in Figure 2
appears when reprogramming is complete.
NOTE:
If the screen in Figure 2 does not display (reprogramming does not complete).
2009-2010 G37 AT vehicles: Proceed to TCM Reprogramming.
All 2008 G37 vehicles, 2009-2010 G37 MT vehicles: Perform steps 4 and 5 below. DO NOT
perform TCM Reprogramming procedure.
4. Make sure to erase DTCs from all systems.
NOTE:
During reprogramming DTCs will set in several systems and must be erased.
5. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.

^ If the MIL comes ON, go back to ASIST for further diagnostic information.
TCM Reprogramming (For 2009-2010 G37 AT vehicles ONLY)
^ Make sure to erase DTCs from all Systems.
^ If you are not familiar with the TCM reprogramming procedure. Refer to «CONSULT- III (C-III)
TCM Reprogramming» general procedure.

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

2. Navigate C-III to the reprogramming screen shown in the Figure 3 example above.
NOTE:
^ Do not use the Reprogramming / Programming selection.
^ Select the Model and Model Year and then navigate to Direct Diagnosis> Reprogramming.
^ TCM initialization is not needed for 7 Speed AT reprogramming.
3. On your C-III screen look for a Transmission Part Number in the Part Number column (see
Figure 3 example).
^ If there is no Transmission Part Number listed proceed to step 6.
^ If a Transmission Part Number is listed write it on the Repair Order then proceed to step 4.
4. Compare the P/N you wrote down to the numbers in the Current TCM Part Number column in
Table B, above.
^ If there is a match continue with the TCM reprogramming procedure. If there is not a match
proceed to step 6.

5. If you have performed TCM reprogramming the screen in Figure 4 displays when reprogramming
is complete.
6. Make sure to erase DTCs from all Systems.
NOTE:
During reprogramming DTCs will set in several systems and must be erased.
7. Test drive the vehicle and make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON go back to ASIST for further diagnostic information.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start

Engine Control Module: Customer Interest Engine Controls — Low Battery Voltage/No Start
Classification: EL09-050C
Reference: ITB10-010C
Date: September 7, 2010
G37; BATTERY LOW VOLTAGE / NO START
This bulletin has been amended. The Applied Vehicles section and Table A has been revised. No
other changes have been made. Please discard all previous copies.
APPLIED VEHICLES: 2008-2010 G37 Coupe (CV36) 2009-2010 G37 Sedan (V6) 2009-2010 G37
Convertible (HV36)
IF YOU CONFIRM
An Applied Vehicle has a battery low voltage or «no start condition» due to a specific customer use
pattern (see Repair Overview flowchart»).
NOTE:
A battery low voltage condition may cause an engine no crank or no start condition.
ACTIONS
1. Confirm this bulletin applies (see Repair Overview flowchart).
NOTE:
If the customer use pattern DOES NOT MATCH the description in the Repair Overview this bulletin
DOES NOT APPLY. Go back to ASIST for further diagnostic and repair information.
2. If this bulletin applies use the Repair Overview flowchart to determine which repair procedures to
apply to your vehicle.
IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Repair Overview as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 240

CLAIMS INFORMATION

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 241

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 242

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

A. On your C-III screen look at the Part Number column (see Figure 1)
^ If this column is blank (no part number listed) proceed to VENT CONTROL VALVE TYPE
CHECK.
^ If a Part Number is listed write it on the Repair Order.

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 243

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 244

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

^ If there is a match continue with the reprogramming procedure. If there is not a match proceed to
VENT CONTROL VALVE TYPE CHECK.
3. If you have performed ECM reprogramming the screen in Figure 2 appears when
reprogramming is complete.
NOTE:
If the screen in Figure 2 does NOT display (reprogramming does NOT complete).
VENT CONTROL VALVE TYPE CHECK — 2008 AND 2009 MODELS
For 2010 models proceed to BATTERY REPLACEMENT AND FINAL PROCESSES.

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 245

1. Compare the Vent Control Valve in your vehicle with the ones shown in the pictures above.
^ If it is the new style DO NOT REPLACE IT. Proceed to BATTERY REPLACEMENT AND FINAL
PROCESS.
^ If it is the old style REPLACE IT with the one from the Parts Information section of this bulletin
and then proceed to BATTERY REPLACEMENT
AND FINAL PROCESSES.
> Refer to the Electronic Service Manual for Vent Control Valve replacement information.
BATTERY REPLACEMENT AND FINAL PROCESSES
1. Replace the battery.
^ The battery part number is listed in the Parts Information section of this bulletin.
^ Reset / Re-initialize Clock Radio Presets Power Windows ATC and Rear View Monitor. (Refer to
Additional Service When Removing Battery
Negative Terminal in the GI section of the appropriate Service Manual for details.)
^ Make sure the replacement battery is fully charged and ready for service before releasing the
vehicle to the customer.
2. If the ECM was reprogrammed:
a. Erase DTCs from all systems. (During the reprogramming DTCs will set in several systems and
must be erased).
b. Test drive the vehicle. Make sure it operates correctly and the MIL is OFF.
^ If the MIL comes ON refer to ASIST for further diagnostic information.

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine

Engine Control Module: Customer Interest Engine Controls — Ticking Noise From Left Bank Of
Engine
Classification: EC08-010B
Reference: ITB08-028B
Date: October 23, 2009
2008 G37 COUPE; NOISE FROM BANK 2 VVEL ACTUATOR
The ECM Part Number Table and ACTION have been amended. PARTS INFORMATION has been
deleted. Please discard all earlier versions of this bulletin.
APPLIED VEHICLE: 2008 G37 Coupe (CV36)
IF YOU CONFIRM:
A slight ticking / tapping / knocking noise coming from the Bank 2 (driver side) VVEL (Variable
Valve Event & Lift) actuator.
ACTION:
1. Refer to Step 2 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you
are working on.
2. If this bulletin applies; reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You
MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential
to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.

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Information > Technical Service Bulletins > Customer Interest: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 250

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

A. On your C-III screen, look at the Part Number column (see Figure 1):
^ If this column is blank (no part number listed), this bulletin does not apply. Close C-III and refer to
ASIST for further diagnostic information.
^ If a Part Number is listed, write it on the Repair Order.
B. Go to C below.
C. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.
^ If there is a match, this bulletin applies; continue with the reprogramming procedure.
NOTE:
If there are two lines (two reprogramming options) on your C-III screen, use the one that does not
have the message «Caution! Use ONLY with ITBXX-XXX».
^ If there is not a match, this bulletin does not apply. Close C-III and refer to ASIST for further
diagnostic information.

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From Left Bank Of Engine > Page 251

3. If this bulletin applies and you have performed ECM reprogramming, the screen in Figure 2
displays when the reprogramming is completed.
4. Make sure to erase DTCs from all Systems.
NOTE:
During the reprogramming, DTCs will set in several systems and must be erased.
5. Test drive the vehicle and make sure it operates correctly and the Check Engine light is OFF.
^ If the Check Engine light comes ON; diagnose, perform repairs, and erase DTCs.
^ Diagnosis and repairs beyond the ECM reprogramming are not covered by this bulletin.

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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored

Engine Control Module: All Technical Service Bulletins Engine Controls — MIL ON/DTC P1421
Stored
Classification: EC10-038A
Reference: ITB10-076A
Date: April 26, 2011
2008-2010 G37; MIL «ON» WITH DTC P1421 STORED
This bulletin has been amended. Several changes have been made throughout the bulletin. Please
discard all previous versions.
APPLIED VEHICLES: 2008 G37 Coupe (CV36) 2009-2010 G37 Sedan, Coupe & Convertible (V36,
CV36, HV36)
IF YOU CONFIRM
An Applied Vehicle has the MIL ON with DTC P1421 (Cold Start Control) stored in the ECM.
ACTIONS
1. Refer to step 2 in the ECM Reprogramming section of the Service Procedure to confirm this
bulletin applies to the vehicle you are working on.
2. If this bulletin applies reprogram the ECM.
3. If instructed reprogram the TCM.
CLAIMS INFORMATION
IMPORTANT:

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> Engine Controls — MIL ON/DTC P1421 Stored > Page 257

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.

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> Engine Controls — MIL ON/DTC P1421 Stored > Page 259

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> Engine Controls — MIL ON/DTC P1421 Stored > Page 260

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> Engine Controls — MIL ON/DTC P1421 Stored > Page 261

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

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> Engine Controls — MIL ON/DTC P1421 Stored > Page 262

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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start

Engine Control Module: All Technical Service Bulletins Engine Controls — Low Battery Voltage/No
Start
Classification: EL09-050C
Reference: ITB10-010C
Date: September 7, 2010
G37; BATTERY LOW VOLTAGE / NO START
This bulletin has been amended. The Applied Vehicles section and Table A has been revised. No
other changes have been made. Please discard all previous copies.
APPLIED VEHICLES: 2008-2010 G37 Coupe (CV36) 2009-2010 G37 Sedan (V6) 2009-2010 G37
Convertible (HV36)
IF YOU CONFIRM
An Applied Vehicle has a battery low voltage or «no start condition» due to a specific customer use
pattern (see Repair Overview flowchart»).
NOTE:
A battery low voltage condition may cause an engine no crank or no start condition.
ACTIONS
1. Confirm this bulletin applies (see Repair Overview flowchart).
NOTE:
If the customer use pattern DOES NOT MATCH the description in the Repair Overview this bulletin
DOES NOT APPLY. Go back to ASIST for further diagnostic and repair information.
2. If this bulletin applies use the Repair Overview flowchart to determine which repair procedures to
apply to your vehicle.
IMPORTANT:
The purpose of ACTIONS (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Repair Overview as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

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> Engine Controls — Low Battery Voltage/No Start > Page 267

CLAIMS INFORMATION

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> Engine Controls — Low Battery Voltage/No Start > Page 268

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

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> Engine Controls — Low Battery Voltage/No Start > Page 269

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

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> Engine Controls — Low Battery Voltage/No Start > Page 270

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> Engine Controls — Low Battery Voltage/No Start > Page 271

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

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> Engine Controls — Low Battery Voltage/No Start > Page 272

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

Classification: EC10-016
Reference: ITB10-038
Date: June 21, 2010
ECM REPROGRAM INTERRUPTION RECOVERY PROCEDURE
SERVICE INFORMATION
A complete step-by-step General Procedure for CONSULT-III (C-III) ECM Reprogram Interruption
Recovery is now available in this bulletin as a attachment.
While performing ECM (Engine Control Module) reprogramming, the reprogramming may stop
(become interrupted) before it is 100% complete. One of two messages may appear:
^ The VI probe is disconnected on USB, please check the connection of the probe.
^ Reprogramming fail, «Error code 0».
In many cases, reprogramming recovery is possible and the ECM may not need to be replaced if
the complete ECM part number has been registered into the ECM before reprogramming stopped.
NOTE:
ECM is referred to as ECU in C-III.
The ECM Reprogram Interruption Recovery General Procedure applies to Technical Service
Bulletins that include ECM reprogramming published in April 2010 and later.
IMPORTANT: BEFORE STARTING REPROGRAMMING
^ Connect a battery charger to the vehicle battery.
^ Be sure to turn OFF all vehicle electrical loads.
^ For ECM reprogramming, the C-III MUST be connected to the VI using the USB cable.
^ Be sure to connect the AC Adapter.

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Engine Controls — ECM Programming Interruption Recovery > Page 277

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Engine Controls — ECM Programming Interruption Recovery > Page 278

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Engine Controls — ECM Programming Interruption Recovery > Page 279

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Engine Controls — ECM Programming Interruption Recovery > Page 280

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Engine Controls — ECM Programming Interruption Recovery > Page 281

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Engine Controls — ECM Programming Interruption Recovery > Page 282

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Engine Controls — ECM Programming Interruption Recovery > Page 283

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Engine Controls — ECM Programming Interruption Recovery > Page 284

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Engine Controls — ECM Programming Interruption Recovery > Page 285

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Engine Controls — ECM Programming Interruption Recovery > Page 286

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Engine Controls — ECM Programming Interruption Recovery > Page 287

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Attachment — General Procedure

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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 08-028B > Oct > 09
> Engine Controls — Ticking Noise From Left Bank Of Engine

Engine Control Module: All Technical Service Bulletins Engine Controls — Ticking Noise From Left
Bank Of Engine
Classification: EC08-010B
Reference: ITB08-028B
Date: October 23, 2009
2008 G37 COUPE; NOISE FROM BANK 2 VVEL ACTUATOR
The ECM Part Number Table and ACTION have been amended. PARTS INFORMATION has been
deleted. Please discard all earlier versions of this bulletin.
APPLIED VEHICLE: 2008 G37 Coupe (CV36)
IF YOU CONFIRM:
A slight ticking / tapping / knocking noise coming from the Bank 2 (driver side) VVEL (Variable
Valve Event & Lift) actuator.
ACTION:
1. Refer to Step 2 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you
are working on.
2. If this bulletin applies; reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You
MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential
to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.

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> Engine Controls — Ticking Noise From Left Bank Of Engine > Page 295

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

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> Engine Controls — Ticking Noise From Left Bank Of Engine > Page 296

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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

Engine Controls — ECM Replacement Procedures
Classification: EC00-008c
Reference: ITB00-038c
Date: April 16, 2004
ECM REPLACEMENT PROCEDURES
ATTENTION:
THIS BULLETIN HAS BEEN REVISED.
^ The Service Procedures for replacing an ECM on an Applied vehicle were revised.
^ Please use this bulletin ITB00-038c for complete information.
^ Discard all previously distributed copies of ITB00-038.
APPLIED VEHICLES: All 2000 and later 1999 Q45 (FY33) 1999 QX4 (JR5O) from VIN
JNRAR07**XW060101
IF YOU CONFIRM:
The Electronic Control Module (ECM) needs to be replaced on a 2000 MY and later vehicle, or an
Applied 1999 MY vehicle (see above).
ACTIONS:
^ Re-register all customer keys if the vehicle has ECM based NATS (see step 1).
^ Check ASIST for any new updates for the new ECM you’re installing (see steps 2 — 4).
^ Perform the «ACCELERATOR PEDAL & THROTTLE VALVE CLOSED POSITION LEARNING»
procedure (see step 5).
^ After installing the new ECM, perform the «IDLE AIR VOL LEARNING» procedure (when
applicable) using CONSULT-II. See step 6.
^ For 2005 and later vehicles, enter the vehicle VIN into the new ECM (see step 7).
CAUTION:
Failure to perform all the work steps in the specified order can cause poor engine running, MIL
«ON», or vehicle emission test rejection.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.

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> Engine Controls — ECM Replacement Procedures > Page 301

CLAIMS INFORMATION

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> Engine Controls — ECM Replacement Procedures > Page 302

Disclaimer
Service Procedure
Check NATS On The Vehicle
1. Check to see if the vehicle you’re working on has ECM based NATS V2.0 or V5.0.
a. If the vehicle has ECM based NATS V2.0 or V5.0 it will NOT start after you install a service
replacement ECM. So you’ll have to re-register all ignition keys including spare keys with
CONSULT-II and the purple NATS card. After you do this proceed with step 2.
^ If you do not know how to re-register the keys refer to the ESM for the NATS key re-registration
procedure.
b. If the vehicle has BCM based NATS (instead of ECM based NATS V2.0 or V5.0) you do NOT
have to re-register the ignition or spare keys. Proceed with step 2.
Check For ECM Data Updates in ASIST
2. In ASIST select [CONSULT Utilities] >> [ECM/TCM Data]. Then choose Model and Model Year
(see Figure 1).
3. Look for ECM Data Updates (listed by ECM P/Ns and vehicle configuration) in the top center
display panel of the ASIST screen (see Figure 1).

a. If there is no updates listed for your vehicle configuration you do NOT have to reprogram the
service replacement ECM. Proceed with step 5.
b. If there is updates listed for your vehicle configuration see if they apply to the service
replacement ECM you’re going to install. Do this by performing step 4.
4. Select the configuration on the screen for the vehicle you’re working on. Then confirm that your
ECM is listed in the «Replaces 23710-XXXXX, -XXXXX etc» section in the lower center Details
panel of the ASIST screen (see Figure 1).
a. If your ECM is listed in the Details panel you must reprogram the ECM with the latest data
update. After you do this proceed with step 5.
CAUTION:
The 1999-2000 Q45 and 1999-2000 QX4 have a gray CONSULT connector AND a white GST
connector. Do NOT attempt to perform the ECM Reprogramming procedure with CONSULT-II
connected to the gray CONSULT connector. See the appropriate ESM for further details if
necessary.
b. If your ECM is NOT listed in the Details panel you do NOT have to reprogram the ECM. Proceed
with step 5.
Accelerator Pedal & Throttle Valve Closed Position Learning
5. Perform the Accelerator Pedal & Throttle Valve Closed Position Learning as follows:
a. Make sure the accelerator pedal is fully released.
b. Turn the ignition switch «ON» for 2 seconds.

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> Engine Controls — ECM Replacement Procedures > Page 303

c. Turn the ignition switch OFF for 10 seconds.
d. Turn the ignition switch «ON» for 2 seconds then
e. Turn the ignition switch «OFF» again for 10 seconds (see Figure 2).
f. Proceed with step 6.
Perform Idle Air Volume Learning (IAVL)
NOTE:
Make sure all electrical loads are turned OFF, including A/C, defroster, radio, lights, etc. while
performing the following procedures. Also, make sure the engine cooling fans are NOT operating
during the following procedures.
6. Perform the Idle Air Volume Learning procedure as follows:
a. Connect CONSULT-II to the vehicle.
b. Warm up engine and transmission to operating temperature.
c. In the [CONSULT WORK SUPPORT] mode, select [IDLE AIR VOL LEARN]. See Figure 3.
NOTE:
^ If IDLE AIR VOL LEARN is not shown as a SELECT WORK ITEM on CONSULT, the vehicle
does not need the procedure.
^ In this case only, this bulletin is complete, no further action is needed.

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d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

e. Press [START] on the «WORK SUPPORT» screen to begin the Idle Air Volume Learning (IAVL)
procedure. See Figure 5.
^ The IAVL procedure will take several minutes to complete.
^ CONSULT will display «Please Wait» in the center of the screen while the IAVL procedure is in
process. See Figure 6.

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^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

f. Once the IAVL procedure is finished proceed with step 7.
For 2005 and Later MY Vehicles ONLY: Enter VIN Into New Service Replacement ECM
7. Enter the VIN into the new service replacement ECM as follows:
a. Select [ENGINE] on the select System screen. See Figure 8.

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b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

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> Engine Controls — ECM Replacement Procedures > Page 307

e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

f. Enter the entire VIN using the keyboard. See Figure 13.
^ Use [CHNG] to switch between the letters and numbers keyboard screens.
g. Once the entire VIN is entered select [ENTER] on the Keyboard screen. See Figure 14.

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h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

^ You MUST enter the VIN a second time for confirmation purposes.
i. Once the entire VIN is entered (a second time) select [ENTER] on the Keyboard screen. See
Figure 16.
j. Select [START] on the «VIN Registration» screen to complete the VIN registration process. See
Figure 17.

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k. Turn the ignition switch OFF and wait at least 10 seconds.

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Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

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Attachment — General Procedure

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Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

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CLAIMS INFORMATION

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Engine Controls — ECM Replacement Procedures > Page 336

d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

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^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

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b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

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e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

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h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

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k. Turn the ignition switch OFF and wait at least 10 seconds.

Engine Control Module: Locations

Engine Control Module: Diagrams
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
— ECM is located behind the instrument assist lower panel. For this inspection, remove passenger
side instrument lower panel.
— Specification data are reference values and are measured between each terminal and ground.
— Pulse signal is measured by CONSULT-III.

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)

Terminals And Reference Values (Part 12)

Engine Control Module: Testing and Inspection
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
— ECM is located behind the instrument assist lower panel. For this inspection, remove passenger
side instrument lower panel.
— Specification data are reference values and are measured between each terminal and ground.
— Pulse signal is measured by CONSULT-III.

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)

Terminals And Reference Values (Part 12)

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Information > Service and Repair > Additional Service When Replacing Control Unit

Engine Control Module: Service and Repair Additional Service When Replacing Control Unit
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM): Description
When replacing ECM, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM): Special Repair
Requirement
Step 1-5

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Engine Control Module: Service and Repair VIN Registration
VIN REGISTRATION
VIN REGISTRATION: Description
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is
replaced.
NOTE: Accurate VIN which is registered in ECM may be required for Inspection & Maintenance
(I/M).
VIN REGISTRATION: Special Repair Requirement
Step 1-2

Air Bag Control Module: Service and Repair
DIAGNOSIS SENSOR UNIT
Exploded View
SR-16 Exploded View
Removal and Installation
WARNING:
— Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3
minutes.
— Before disconnecting the air bag sensor unit harness connector, be sure to disconnect the each
harness connector of the air bag module and pre-tensioner seat belt to prevent air bag deployment
by static electricity and pre-tensioner seat belt operation.
— Do not use air tools or electric tools for servicing.
REMOVAL
1. Disconnect each connector of all air bag modules and pre-tensioner seat belts. 2. Remove the
center console assembly. 3. Remove the center console rear bracket. 4. Disconnect diagnosis
sensor unit harness connector. 5. Remove TORX bolts, ground bolt, and then remove diagnosis
sensor unit.
CAUTION: Do not use old TORX bolts after removal; replace with new TORX bolts.
— Replace the diagnosis sensor unit if it has been dropped or sustained an impact.
— Replace the diagnosis sensor unit of deployed SRS air bag and deployed SRS front seat belt
pre-tensioner.
INSTALLATION

Install in the reverse order of removal.
CAUTION:
— Do not damage the harness while installing.
— In the case that a malfunction is detected by the air bag warning lamp, reset by the self-diagnosis
function and delete the memory by CONSULT-III.
— In the case that a malfunction is still detected after the above operation, perform self-diagnosis to
repair malfunctions.
— After the work is completed, check that no system malfunction is detected by air bag warning
lamp. Refer to SRC-15, «Diagnosis Description». See: Restraint Systems/Air Bag Systems/Testing
and Inspection/Initial Inspection and Diagnostic Overview
ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is
correct for the vehicle as equipped.

Seat Belt Control Module: Service and Repair
PRE-CRASH SEAT BELT CONTROL UNIT
Exploded View
SBC-40 Exploded View
Removal and Installation
REMOVAL
1. Remove the glove box. 2. Disconnect the pre-crash seat belt control unit connector (A). 3.
Remove the screws. 4. Remove the pre-crash seat belt control unit (1).
INSTALLATION
Install in the reverse order of removal.

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> Recalls for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall — Occupant Classification
System Inspection

Technical Service Bulletin # 08-045D Date: 081204

Recall — Occupant Classification System Inspection
Reference: ITB08-045D
Date: December 4, 2008
VOLUNTARY RECALL CAMPAIGN
2007 — 2008 PASSENGER AIR BAG OCCUPANT CLASSIFICATION SYSTEM (OCS)
This bulletin has been amended. Instruction for the AC adapter has been expanded. Please
discard previous versions of this bulletin.
CAMPAIGN ID #: P8243
NHTSA #: 08-521
APPLIED VEHICLES: 2007-2008 G35 Sedan (V36) 2008 G37 Coupe (CV36) 2008 EX35 (J50)
Check Infiniti Net to confirm campaign eligibility.
INTRODUCTION
Infiniti is conducting a Voluntary Recall Campaign to inspect the Occupant Classification System
(OCS) Varistor located in the front passenger seat cushion. A special tool will be used for the
inspection. If the inspection results are OK, no further action is necessary. If the special tool
indicates an OCS Varistor issue, the seat cushion assembly will be replaced. We anticipate that
less than 1% of the affected vehicles will require seat cushion replacement.
IDENTIFICATION NUMBER
Infiniti has assigned identification number P8243 to this campaign. This number must appear on all
communications and documentation of any nature dealing with this campaign.
DEALER RESPONSIBILITY
It is the dealer’s responsibility to check Infiniti Net for the campaign status on each vehicle falling
within the range of this voluntary safety recall which for any reason enters the service department.
This includes vehicles purchased from private parties or presented by transient (tourist) owners
and vehicles in a dealer’s inventory. Federal law requires that new vehicles in dealer inventory
which are the subject of a safety recall must be corrected prior to sale. Failure to do so can result in
civil penalties by the National Highway Traffic Safety Administration. While federal law applies only
to new vehicles, Infiniti strongly encourages dealers to correct any used vehicles in their inventory
before they are retailed.

REQUIRED SPECIAL TOOLS

OCS Varistor Check Tool Kit — J-49787
^ Additional tools can be ordered from TECH-MATE.
MAT Cable Information and Instructions:
The MAT cable is good for only 100 connections (50 for each end).
^ MAT cable P/N — 551243
^ Cable end connectors are identical (interchangeable).
The MAT cable ends have identifying marks which allow the user to keep track or how many times
each end has been used.
^ One end of the cable is marked with a «Blue Band» as shown.
^ One end is «Plain» as shown.

A «Usage Card» is included with each tool kit and with each replacement MAT cable.
Each time the tool is used, fill in one of the squares on the Usage Card.
^ One side of the card has 50 squares for the Blue Band End of Cable.
^ The other side of the card has 50 squares for the Plain End of Cable.

1. Plug one end of the MAT cable into the MAT port on the Varistor Test Tool.
2. Leave this end plugged into the tool for 50 vehicle inspections (until one side of the Usage Card
is full).
^ Do not unplug the MAT cable from the test tool between each vehicle inspection.
3. When one side of the usage card is full, (all 50 squares are filled) switch ends of the MAT cable.
4. When both sides of the Usage Card are full, replace the MAT cable with a new one.
^ Replacement MAT cables (P/N 551243) are available from TECH-MATE.
Testing the Varistor Test Tool
^ This test must be completed once each day before use.
1. Attach the correct AC plug style to the AC/DC Power Cord.
^ The AC/DC power cord has several plug styles to accommodate different global markets.
^ Select and attach the AC plug style for the U.S. market.
CAUTION:

^ To install the AC plug to the AC/DC Power Cord:

a. Set the plug straight down onto the Power Cord tabs. (see Figure E)
b. Once the adapter is on the tabs, slide the adapter on to lock it in place. (see Figure F)
DO NOT TRY TO SLIDE THE ADAPTER ONTO THE POWER CORD TABS. THE TABS WILL
BREAK IF THIS IS TRIED.

2. Attach the AC/DC Power Cord and one end of MAT cable, and then turn on the Varistor Test
Tool.

^ One end of MAT cable should be plugged into the MAT port.
3. Connect the other end of the MAT cable to the «Check NG» port as shown.
4. Make sure the LEDs turn ON as shown above.

5. Move MAT connector from «Check NG» to «Check OK» port as shown.

6. Make sure the LEDs turn ON as shown above.
7. Push the Start button on the Varistor Test Tool.
8. After pressing the Start button, make sure the LEDs turn ON as shown above.

9. Wait about 10 minutes — make sure the LEDs turn ON as shown above.
10. When LEDs turn ON as listed above the Varistor Test Tool is OK.
11. Mark the usage card twice. One mark for each connection made in this test.

PARTS INFORMATION

CLAIMS INFORMATION

Disclaimer
Service Procedure
SERVICE PROCEDURE

Steps 1 and 2.

3. Write down the radio station presets.

4. Turn the ignition OFF.
5. Disconnect both battery cables — negative cable first.

6. Wait at least 3 minutes.
7. Connect the power cord to the Varistor Test Tool.
^ The AC to 18 volt DC power cable has several plug styles to accommodate different global
markets.
^ Select and attach the AC plug style for the U.S. market.
8. Look under the passenger seat; locate and disconnect the OCS connector and connect the MAT
cable.
^ The OCS connector is an 8 pin white connector (only 3 of the pins are used/filled).
^ This is an example — the connector location may be different for your vehicle.

NOTE:

^ Figure 3 shows the Varistor Test Tool connected to a vehicle.
^ Make sure to mark the «Usage Card». Refer to Required Special Tools for Usage Card
information.
9. Turn ON the Varistor Test Tool.

10. Make sure the LEDs turn ON as shown above.

11. Push the Start button on the Varistor Test Tool.
12. After pressing the Start button, make sure the LEDs turn ON as shown above.
NOTE:
«OK» LED should be OFF.
13. Wait for OCS inspection to complete — about 10 minutes.
NOTE:
Expected results — Less than 1% will test NG. More than 99% will test OK.
Actual inspection results shown above.
NG results:
NG results are expected to be very low (less than 1% of vehicles tested).
If you get a NG result, do the following:
a. Remove / disconnect both ends of the MAT cable that you are using.

b. Get another serviceable new MAT cable and connect it to the Varistor Test Tool and the vehicle
seat.
^ Make sure to mark the usage card for each MAT cable connection.
c. Repeat the OCS inspection test (steps 9 though 13).
d. After repeating the test with a second MAT cable (NG result 2 times), replace the OCS / seat
cushion.
^ See OCS / seat cushion replacement below.
NOTE:
^ If the second test is a NG result (same as the first), the original cable can continue to be used for
the remainder of its «usage card» life.
^ If the second test is an OK result (different than the first) the original cable should be discarded.
OCS / Seat Cushion Replacement
Only for N/G test results in step 13, or DTC B1022 is stored
^ If not already done:
^ Record radio station presets.
^ Turn the ignition OFF, disconnect both battery cables negative cable first.
^ Wait at least 3 minutes.
^ Be careful: Do not scratch or otherwise damage interior parts.

^ Refer to the SE section of the appropriate Service Manual for Seat Cushion replacement
information.
NOTE:
The Service Manual may caution against disassembly of the passenger seat cushion from the seat
frame. It may also instruct that the cushion and frame be replaced as an assembly. Due to changes
in parts manufacturing and availability, the seat cushion can now be replaced separately from the
seat frame on Model and Year vehicles affected by this campaign.
> Make sure each seat cushion hook and strap is properly connected/attached in its original
location.
> Torque mounting bolts according to the appropriate Service Manual.
> WARNING: Make sure all mounting and support clips for electrical connectors and harness are
reinstalled in their original locations.
> Retain the old seat cushion for 30 days for possible inspection by Infiniti.
14. Reconnect the OCS vehicle harness connector.
15. Connect the battery cables positive cable first.

16. Check the Air Bag warning light and the Occupant Detection System warning light as follows:
a. Sit in the driver seat and watch the warning lights as you turn the ignition ON.
b. Both warning lights should turn ON for 5 — 7 seconds, and then go OFF.
c. If either warning light does not turn ON at all, does not turn OFF, or blinks, refer to the Service
Manual for diagnosis and repair.
NOTE:
Diagnosis and repair beyond replacement of the OCS (passenger seat cushion) is not covered by
this bulletin/campaign.
17. Reset the clock and the radio station presets.
18. Refer to the Service Manual and perform the following as needed:
^ Power Window Initialization
^ Accelerator Pedal Released Position Learning
^ Throttle Valve Closed Position Learning
^ Idle Air Volume Learning
^ Rear View Monitor Guiding Line Adjustment
^ Rear View Monitor/Around View Monitor Predicted Course Line Center Position Adjustment
NOTE:
You may need to inform the customer that their Automatic Drive Position System will need to be
reset.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> Recalls for Seat Occupant Classification Module — Air Bag: > NHTSA08V521000 > Oct > 08 > Recall 08V521000: OCS
Control Unit Replacement

Seat Occupant Classification Module — Air Bag: Recalls Recall 08V521000: OCS Control Unit
Replacement

VEHICLE MAKE/MODEL: MODEL YEAR(S): Infiniti/EX35 2007-2008 Infiniti/G35 Sedan 2007-2008
Infiniti/G37 2007-2008 Nissan/350Z 2007-2008 Nissan/Altima 2007-2008 Nissan/Murano
2007-2008 Nissan/Rogue 2007-2008 MANUFACTURER: Nissan North America, Inc.
MFR’S REPORT DATE: October 02, 2008
NHTSA CAMPAIGN ID NUMBER: 08V521000
NHTSA ACTION NUMBER: N/A COMPONENT: Electrical System: Software
POTENTIAL NUMBER OF UNITS AFFECTED: 204361
SUMMARY: Nissan is recalling 204,361 M/Y 2007-2008 Altima, Altima Coupe, 350Z, Murano,
Rogue; and Infiniti G35 Sedan, G37 Coupe and EX35 passenger vehicles equipped with
Continental Automotive Systems «Occupant Classification System» (OCS) control units. A varistor
in the OCS control unit located in the passenger seat cushion may have been manufactured out of
specification. Under certain conditions, this could cause an interruption of signal between the OCS
and the Air Bag Control Unit (ACU). CONSEQUENCE: This could result in the passenger air bag
being suppressed which could fail to provide adequate protection in the event of a crash.
REMEDY: Dealers will test the signal between the OCS and ACU systems using a special tool to
check that it is functioning as designed. If necessary, the seat cushion (containing OCS hardware)
will be replaced with a new one manufactured to specification. The recall is expected to begin on or
before November 3, 2008. Owners may contact Nissan at 1-800-647-7261 or Infiniti at
1-800-662-6200.
NOTES: Customers may also contact The National Highway Traffic Safety Administration’s Vehicle
Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection

Technical Service Bulletin # 08-045D Date: 081204

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 412

REQUIRED SPECIAL TOOLS

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 414

^ To install the AC plug to the AC/DC Power Cord:

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2. Attach the AC/DC Power Cord and one end of MAT cable, and then turn on the Varistor Test
Tool.

^ One end of MAT cable should be plugged into the MAT port.
3. Connect the other end of the MAT cable to the «Check NG» port as shown.
4. Make sure the LEDs turn ON as shown above.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 416

5. Move MAT connector from «Check NG» to «Check OK» port as shown.

6. Make sure the LEDs turn ON as shown above.
7. Push the Start button on the Varistor Test Tool.
8. After pressing the Start button, make sure the LEDs turn ON as shown above.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 418

PARTS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 419

CLAIMS INFORMATION

Disclaimer
Service Procedure
SERVICE PROCEDURE

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 420

Steps 1 and 2.

3. Write down the radio station presets.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
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4. Turn the ignition OFF.
5. Disconnect both battery cables — negative cable first.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 422

NOTE:

^ Figure 3 shows the Varistor Test Tool connected to a vehicle.
^ Make sure to mark the «Usage Card». Refer to Required Special Tools for Usage Card
information.
9. Turn ON the Varistor Test Tool.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 423

10. Make sure the LEDs turn ON as shown above.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 424

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 425

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > 08-045D > Dec > 08 > Recall Occupant Classification System Inspection > Page 426

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Restraint Systems > Seat Occupant Classification Module — Air Bag > Component Information > Technical Service Bulletins
> All Technical Service Bulletins for Seat Occupant Classification Module — Air Bag: > NHTSA08V521000 > Oct > 08 >
Recall 08V521000: OCS Control Unit Replacement

Seat Occupant Classification Module — Air Bag: All Technical Service Bulletins Recall 08V521000:
OCS Control Unit Replacement

Seat Occupant Classification Module — Air Bag: Component Locations

Seat Occupant Classification Module — Air Bag: Service and Repair
OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT
Removal and Installation
For removal and installation
The occupant classification system control unit and seat sensor mat are an integral part of the front
passenger seat cushion and are replaced as an assembly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Steering and Suspension > Relays and Modules — Steering > Steering Control Module > Component Information >
Locations > Without 4WAS

Steering Control Module: Locations With 4WAS

Steering Control Module: Service and Repair Without 4WAS
POWER STEERING CONTROL UNIT
STC-24 Exploded View

Removal and Installation
REMOVAL
1. Remove glove box assembly.
2. Remove power steering control unit screws. 3. Remove power steering control unit (1). 4.
Disconnect power steering control unit connector.
INSTALLATION
Install in the reverse order of removal.

Steering Control Module: Service and Repair With 4WAS
Additional Service When Replacing Control Unit: Description
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
^ Perform 4WAS front actuator adjustment after replacing 4WAS front control unit.
^ Perform 4WAS front actuator adjustment when performing any service below.
— 4WAS front actuator and the steering components (including wheel alignment) removal. Refer to
STC-27, «4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair
Requirement (Pattern 1)». See: Steering and Suspension/Steering/Description and Operation/With
4WAS/4WAS Front Actuator Neutral Position Adjustment
CAUTION: ^
Check the following items before the removal:
— 4WAS warning lamp is turned OFF after the engine starts.
— Self-diagnosis of each control unit of 4WAS system (4WAS front control unit/4WAS main control
unit) is performed. Check that 4WAS system is controlled properly.
— 4WAS front actuator and the steering components (including wheel alignment) installation. Refer
to STC-28, «4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair
Requirement (Pattern 2)». See: Steering and Suspension/Steering/Testing and
Inspection/Programming and Relearning/4WAS Front Actuator Neutral Position Adjustment

— 4WAS front control unit and the steering angle sensor replacement. Refer to STC-28, «4WAS
FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement (Pattern
1)». See: Steering and Suspension/Steering/Testing and Inspection/Programming and
Relearning/4WAS Front Actuator Neutral Position Adjustment
— When driving while misaligning the steering wheel position (center) after installing 4WAS front
actuator. Refer to STC-30, «4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT:
Special Repair Requirement (Pattern 4)». See: Steering and Suspension/Steering/Testing and
Inspection/Programming and Relearning/4WAS Front Actuator Neutral Position Adjustment
4WAS Front Control Unit
4WAS FRONT CONTROL UNIT
STC-177 Exploded View
Removal and Installation
REMOVAL
1. Turn the ignition switch OFF. 2. Remove the instrument driver lower panel. 3. Disconnect 4WAS
front control unit connectors.
CAUTION:

Disconnect 4WAS front control unit connectors 10 minutes after turning the ignition switch OFF.

4. Remove the bolts of 4WAS front control unit. 5. Remove the 4WAS front control unit (1).
INSTALLATION
Note following, and install in the reverse order of removal. ^
Perform 4WAS front actuator adjustment after replacing 4WAS front control unit. Refer to STC-28,
«4WAS FRONT ACTUATOR NEUTRAL POSITION ADJUSTMENT: Special Repair Requirement
(Pattern 3)». See: Steering and Suspension/Steering/Testing and Inspection/Programming and
Relearning/4WAS Front Actuator Neutral Position Adjustment
4WAS Main Control Unit
4WAS MAIN CONTROL UNIT
STC-178 Exploded View
Removal and Installation
1. Turn the ignition switch OFF. 2. Remove the rear wheel house finisher. 3. Disconnect 4WAS
main control unit connectors, 4WAS rear motor relay connector and noise suppressor connectors.

4. Remove the 4WAS main control unit bolt and nuts. 5. Remove the 4WAS main control unit (1).
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Steering and Suspension > Relays and Modules — Wheels and Tires > Tire Pressure Monitor Receiver / Transponder >
Component Information > Specifications

WT-96 Exploded View

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Component Information > Specifications > Page 453

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Transmission and Drivetrain > Relays and Modules — A/T > Control Module, A/T > Component Information > Technical
Service Bulletins > A/T — 5 Speed A/T DTC Diagnostics

Control Module: Technical Service Bulletins A/T — 5 Speed A/T DTC Diagnostics

Classification: AT09-017A
Reference: ITB10-006A
Date: February 11, 2010
5 SPEED A/T DTC DIAGNOSES FOR P1701, P1702, P1703, P1704, P1705, P1754, P1759,
P1764, P1769, P1774
This bulletin has been amended. Additional DTCs were applied. Discard all previous copies.
APPLIED VEHICLES: 2003 — 2010 Infiniti vehicles with 5-Speed A/T
APPLIED TRANSMISSION: RE5R05A ONLY
SERVICE INFORMATION
If one or more DTCs listed below are found stored in Self Diagnosis, use the REPAIR FLOW
CHART shown below to assist in diagnosis.
^ DTCs: P1701, P1702, P1703, P1704, P1705, P1754, P1759, P1764, P1769, P1774.
IMPORTANT NOTE:
If DTC(s) not listed above is/are found stored in Self Diagnosis, this bulletin does not apply. Refer
to ASIST and the appropriate Service Manual for diagnostic procedure(s) as needed.

REPAIR FLOW CHART

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Transmission and Drivetrain > Relays and Modules — A/T > Shift Interlock Control Module > Component Information >
Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Transmission and Drivetrain > Relays and Modules — A/T > Shift Interlock Relay > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Windows and Glass > Power Window Control Module > Component Information > Technical Service Bulletins > Customer
Interest for Power Window Control Module: > 07-025 > Sep > 07 > Body — Erratic Door Window Operation

Power Window Control Module: Customer Interest Body — Erratic Door Window Operation

AMClassification: ELO7-029
Reference: ITB07-035
Date: September 6, 2007
2008 G37 COUPE; DOOR WINDOW OPERATION
APPLIED VEHICLES: 2008 G37 Coupe (CV36)
IF YOU CONFIRM
Upon opening either the driver’s or passenger’s door:
The door window automatically rolls down more than the normal* approximate one (1) inch.
AND
The door windows cannot be raised with the door open.
AND
The battery state-of-charge is low.
OR
The battery (for whatever reason) had been temporarily disconnected.
*NOTE:
The power window has an automatic adjusting function. When the door is being opened the
window is automatically lowered slightly to avoid contact between the window and the side roof
panel. When the door is closed the window is automatically raised slightly.
ACTIONS
If the battery state-of-charge is low: Service the battery as indicated by use of the Battery Service
Center using standard Warranty procedures.
Re-initialize the windows using the following procedure:
NOTE:
This procedure can also be found on page 2-51 of the G37 Owner’s Manual.
1. Push the ignition switch to the ON position.
2. Close the door.
3. Open the window more than halfway by operating the power window switch.
4. Pull the power window switch and hold it to close the window and then hold the switch more than
3 seconds after the window is closed completely.
5. Release the power window switch. Operate the window by the automatic function to confirm the
initialization is complete.
6. Performs steps 2 through 5 above for the other window.

Disclaimer

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Windows and Glass > Power Window Control Module > Component Information > Technical Service Bulletins > Customer
Interest for Power Window Control Module: > 07-035 > Sep > 07 > Body — Erratic Front Door Window Operation

Power Window Control Module: Customer Interest Body — Erratic Front Door Window Operation

AMClassification: EL07-029
Reference: ITB07-035
Date: September 6, 2007
2008 G37 COUPE; DOOR WINDOW OPERATION
APPLIED VEHICLES: 2008 G37 Coupe (CV36)
IF YOU CONFIRM
Upon opening either the driver’s or passenger’s door:
The door window automatically rolls down more than the normal* approximate one (1) inch.
AND
The door windows cannot be raised with the door open.
AND
The battery state-of-charge is low.
OR
The battery (for whatever reason) had been temporarily disconnected.
*NOTE:
The power window has an automatic adjusting function. When the door is being opened the
window is automatically lowered slightly to avoid contact between the window and the side roof
panel. When the door is closed the window is automatically raised slightly.
ACTIONS
If the battery state-of-charge is low: Service the battery as indicated by use of the Battery Service
Center using standard Warranty procedures.
Re-initialize the windows using the following procedure:
NOTE:
This procedure can also be found on page 2-51 of the G37 Owner’s Manual.
1. Push the ignition switch to the ON position.
2. Close the door.
3. Open the window more than halfway by operating the power window switch.
4. Pull the power window switch and hold it to close the window and then hold the switch more than
3 seconds after the window is closed completely.
5. Release the power window switch. Operate the window by the automatic function to confirm the
initialization is complete.
6. Performs steps 2 through 5 above for the other window.

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Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Windows and Glass > Power Window Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Power Window Control Module: > 07-025 > Sep > 07 > Body — Erratic Door Window
Operation

Power Window Control Module: All Technical Service Bulletins Body — Erratic Door Window
Operation

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Technical Service Bulletins for Power Window Control Module: > 07-025 > Sep > 07 > Body — Erratic Door Window
Operation > Page 490

Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Windows and Glass > Power Window Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Power Window Control Module: > 07-035 > Sep > 07 > Body — Erratic Front Door Window
Operation

Power Window Control Module: All Technical Service Bulletins Body — Erratic Front Door Window
Operation

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Relays and Modules > Relays and Modules Windows and Glass > Power Window Control Module > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Power Window Control Module: > 07-035 > Sep > 07 > Body — Erratic Front Door Window
Operation > Page 495

Disclaimer

Distance Sensor: Adjustments
ICC SENSOR INTEGRATED UNIT
Inspection and Adjustment
ADJUSTMENT
Always perform the laser beam aiming adjustment after replacing or removing/installing the ICC
sensor integrated unit. Refer to CCS-7, «LASER BEAM AIMING ADJUSTMENT: Special Repair
Requirement (Preparation)». See: Cruise Control/Adjustments
INSPECTION
Always perform the laser beam aiming adjustment and the ICC system operation inspection after
replacing or removing/installing the ICC sensor integrated unit. Refer to CCS-11, «ACTION TEST:
Special Repair Requirement (Vehicle-To-Vehicle Distance Control Mode)». See: Cruise
Control/Testing and Inspection/Initial Inspection and Diagnostic Overview/Action Test

Distance Sensor: Service and Repair
ON-VEHICLE REPAIR
ICC SENSOR INTEGRATED UNIT
Exploded View
LEATHER GRADE TYPE
CCS-111 Exploded View
SPORT GRADE TYPE
CCS-111 Exploded View
Removal and Installation
REMOVAL
1. Remove the front bumper fascia.

2. Disconnect ICC sensor integrated unit connector. 3. Remove mounting bolts from ICC sensor
integrated unit. 4. Remove ICC sensor integrated unit.

INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
Customer Interest for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove Box

Shock Sensor: Customer Interest Antitheft — Windows Move When Closing Glove Box
Classification: EL09-003
Reference: ITB09-025
Date: May 12, 2009
2008 — 2009 G37 COUPE; WINDOWS MOVE DOWN / UP WHEN GLOVE BOX IS CLOSED
APPLIED VEHICLE: 2008 — 2009 G37 Coupe (CV36) with Vehicle Security System (VSS)
accessory impact sensor installed.
IF YOU CONFIRM
When the glove box is pushed from open to close the side windows move down about an inch and
then back up.
ACTION:
1. Disconnect the impact sensor brown wire.
2. Reconnect the impact sensor brown wire in the new (correct) location (see Service Procedure).
CLAIMS INFORMATION
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to

successfully completing this repair.
SERVICE PROCEDURE
1. Write down the radio station presets.
2. Write down / record the following customer settings for the ATC (Automatic Temperature
Control) system. (Refer to the Service Manual as needed):
^ Temperature Setting Trimmer
^ Foot Position Setting Trimmer
^ Inlet Port Memory Function
3. Turn the ignition OFF.
4. Disconnect the negative battery cable.

5. Remove / disconnect the impact sensor Brown wire from the Light Green wire in BCM connector
123, cavity 124 (see Figure 1).

^ To access the BCM, refer to the Service Manual.
^ Do not damage the Posi-Tap(R) — it will be reused to reattach the brown wire.
^ If needed, refer to Posi-Tap(R).
6. Tap / connect the impact sensor Brown wire to the Red wire in BCM connector 121, cavity 50
(see Figure 2).
^ Reuse the Posi-Tap®(R) for wire connection.
^ If needed, refer to Posi-Tap(R).

7. Apply electrical tape to the Posi-Tap(R) and Brown wire as shown in Figure 3.

a). Secure the brown wire to the side of the Posi-Tap® with electrical tape ( 2 revolutions).
b). Secure the Red wire with electrical tape as shown ( 2 revolutions).
8. Connect the negative battery cable.
9. Reset the clock and the radio station presets.
10. Refer to the Service Manual for the following «reset / relearn» procedures:
^ Power Window Initialization
^ ATC Temperature Setting Trimmer (A/C system)
^ ATC Foot Position Setting Trimmer (A/C system)
^ ATC Inlet Port Memory Function (A/C system)
^ Rear View Monitor Possible Route Line Center Position Adjustment (if equipped)
11. Inform the customer they will need to «reset» their Automatic Drive Positioner.
Posi-Tap(R) Use
1. Tap vehicle wire.
a). Remove cap (slot side) from tap body.
b). Slide cap around vehicle wire.

c). Tighten the tap TIGHT with finger pressure.

2. Inspect the tap to ensure correct installation.
3. Tap the wire from the Impact Sensor.
a). Remove tap from non-pierce side.
b). Remove protective stub from wire (new wire only).
c). Insert the wire through the non-pierce side opening.
d). Spread the individual strands into a fan Shape.
e). Insert wire into the tap body and ensure that it is all the way in.
f). Tighten the tap TIGHT with finger pressure.

4. Inspect the tap to ensure correct installation.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
All Technical Service Bulletins for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove
Box

Shock Sensor: All Technical Service Bulletins Antitheft — Windows Move When Closing Glove Box
Classification: EL09-003
Reference: ITB09-025
Date: May 12, 2009
2008 — 2009 G37 COUPE; WINDOWS MOVE DOWN / UP WHEN GLOVE BOX IS CLOSED
APPLIED VEHICLE: 2008 — 2009 G37 Coupe (CV36) with Vehicle Security System (VSS)
accessory impact sensor installed.
IF YOU CONFIRM
When the glove box is pushed from open to close the side windows move down about an inch and
then back up.
ACTION:
1. Disconnect the impact sensor brown wire.
2. Reconnect the impact sensor brown wire in the new (correct) location (see Service Procedure).
CLAIMS INFORMATION
IMPORTANT:

The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
SERVICE PROCEDURE
1. Write down the radio station presets.
2. Write down / record the following customer settings for the ATC (Automatic Temperature
Control) system. (Refer to the Service Manual as needed):
^ Temperature Setting Trimmer
^ Foot Position Setting Trimmer
^ Inlet Port Memory Function
3. Turn the ignition OFF.
4. Disconnect the negative battery cable.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
All Technical Service Bulletins for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove
Box > Page 526

5. Remove / disconnect the impact sensor Brown wire from the Light Green wire in BCM connector
123, cavity 124 (see Figure 1).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
All Technical Service Bulletins for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove
Box > Page 527

7. Apply electrical tape to the Posi-Tap(R) and Brown wire as shown in Figure 3.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
All Technical Service Bulletins for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove
Box > Page 528

c). Tighten the tap TIGHT with finger pressure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Technical Service Bulletins >
All Technical Service Bulletins for Shock Sensor: > 09-025 > May > 09 > Antitheft — Windows Move When Closing Glove
Box > Page 529

4. Inspect the tap to ensure correct installation.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Hood Switch / Sensor > Hood Sensor/Switch (For Alarm) > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Mirror Switch > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Mirror Switch > Component Information > Service and Repair > With ADP

Power Mirror Switch: Service and Repair With ADP
DOOR MIRROR REMOTE CONTROL SWITCH
Removal and Installation
REMOVAL
1. Remove the power window main switch finisher (2).
2. Remove door mirror remote control switch (1) from power window main switch finisher (2) using
screwdriver (A).
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Mirror Switch: Service and Repair Without ADP
DOOR MIRROR REMOTE CONTROL SWITCH
Removal and Installation
REMOVAL
1. Remove the power window main switch finisher (2).
2. Remove door mirror remote control switch (1) from power window main switch finisher (2) using
screwdriver (A).
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side

Power Seat Motor Position Sensor: Testing and Inspection Driver Side
SLIDING SENSOR
DRIVER SIDE
DRIVER SIDE : Description
— The sliding sensor is installed on the seat slide cushion frame.
— The pulse signal is transmitted to the driver seat control unit when sliding is operated.
— The driver seat control unit counts the pulse and calculates the sliding amount of the seat.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side >
Page 545

Step 1-2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side >
Page 546

Step 2 (Continued)-5

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side >
Page 547

Step 5 (Continued)-6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side >
Page 548

Power Seat Motor Position Sensor: Testing and Inspection Passenger Side
SLIDING SENSOR
PASSENGER SIDE
PASSENGER SIDE : Description
— The sliding sensor is installed on the seat slide cushion frame.

— The pulse signal is transmitted to the passenger seat control unit when sliding is operated.
— The passenger seat control unit counts the pulse and calculates the sliding amount of the seat.
PASSENGER SIDE : Diagnosis Procedure
Step 1-2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Motor Position Sensor > Component Information > Testing and Inspection > Driver Side >
Page 549

Step 2 (Continued)-6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Testing and Inspection > Forward Switch

Power Seat Switch: Testing and Inspection Forward Switch
Driver Side
FORWARD SWITCH
DRIVER SIDE
DRIVER SIDE : Description
Forward switch is installed on seat back frame. Forward switch detects condition of seat back.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 3-5
DRIVER SIDE : Component Inspection

Step 1
Passenger Side
FORWARD SWITCH
PASSENGER SIDE
PASSENGER SIDE : Description
Forward switch is installed on seat back frame. Forward switch detects condition of seat back.
PASSENGER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Testing and Inspection > Forward Switch > Page 556

Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
Step 5 (Continued)
PASSENGER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Testing and Inspection > Forward Switch > Page 558

Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Testing and Inspection Power Seat Switch
Driver Side
POWER SEAT SWITCH
DRIVER SIDE
DRIVER SIDE : Description
With a built-in reclining switch, sliding switch and lifting switch, power seat switch controls the
power supplied to each motor.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-4
DRIVER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-4

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 4 (Continued)-5
Passenger Side
POWER SEAT SWITCH
PASSENGER SIDE

PASSENGER SIDE : Description
With a built-in reclining switch, sliding switch and lifting switch, power seat switch controls the
power supplied to each motor.
PASSENGER SIDE : Component Function Check

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Testing and Inspection > Forward Switch > Page 563

Step 1
PASSENGER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-5

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 5 (Continued)

PASSENGER SIDE : Component Inspection
Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 4-5

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Testing and Inspection Power Walk-In Switch
Driver Side
POWER WALK-IN SWITCH
DRIVER SIDE
DRIVER SIDE : Description
Power walk-in switch is installed on seat back. The operation signal is inputted to driver seat
control unit when power walk-in switch is operated.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-3
Step 3 (Continued)-5

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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DRIVER SIDE : Component Inspection
Step 1
Passenger Side
POWER WALK-IN SWITCH
PASSENGER SIDE
PASSENGER SIDE : Description
Power walk-in switch is installed on seat back. The operation signal is inputted to passenger seat
control unit when power walk-in switch is operated.
PASSENGER SIDE : Diagnosis Procedure

Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
PASSENGER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Testing and Inspection Seat Belt Buckle Switch
Driver Side
SEAT BELT BUCKLE SWITCH
DRIVER SIDE
DRIVER SIDE : Description Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle
switch detects condition of seat belt.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 3 (Continued)-5
DRIVER SIDE : Component Inspection
Step 1

Passenger Side
SEAT BELT BUCKLE SWITCH
PASSENGER SIDE
PASSENGER SIDE : Description Seat belt buckle switch is installed in seat belt buckle. Seat belt
buckle switch detects condition of seat belt.
PASSENGER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
PASSENGER SIDE : Component Inspection

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Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Testing and Inspection
Driver Side
FORWARD SWITCH
DRIVER SIDE
DRIVER SIDE : Description
Forward switch is installed on seat back frame. Forward switch detects condition of seat back.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 3-5
DRIVER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
Step 5 (Continued)
PASSENGER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1
Driver Side
POWER SEAT SWITCH
DRIVER SIDE
DRIVER SIDE : Description
With a built-in reclining switch, sliding switch and lifting switch, power seat switch controls the
power supplied to each motor.
DRIVER SIDE : Component Function Check

Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-4
DRIVER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-4

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Step 4 (Continued)-5
Passenger Side
POWER SEAT SWITCH
PASSENGER SIDE

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1
PASSENGER SIDE : Diagnosis Procedure

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Step 1-5

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 5 (Continued)

PASSENGER SIDE : Component Inspection
Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 4-5
Driver Side
POWER WALK-IN SWITCH

DRIVER SIDE
DRIVER SIDE : Description
Power walk-in switch is installed on seat back. The operation signal is inputted to driver seat
control unit when power walk-in switch is operated.
DRIVER SIDE : Component Function Check

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1
DRIVER SIDE : Diagnosis Procedure
Step 1-3

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Step 3 (Continued)-5
DRIVER SIDE : Component Inspection
Step 1
Passenger Side

POWER WALK-IN SWITCH
PASSENGER SIDE
PASSENGER SIDE : Description
Power walk-in switch is installed on seat back. The operation signal is inputted to passenger seat
control unit when power walk-in switch is operated.
PASSENGER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
PASSENGER SIDE : Component Inspection
Step 1
Driver Side
SEAT BELT BUCKLE SWITCH
DRIVER SIDE

DRIVER SIDE : Description Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle
switch detects condition of seat belt.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

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Step 1-3

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 3 (Continued)-5
DRIVER SIDE : Component Inspection
Step 1

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Step 1

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Step 1 (Continued)-5
PASSENGER SIDE : Component Inspection

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Step 1
Driver Side
SLIDING LIMIT SWITCH
DRIVER SIDE
DRIVER SIDE : Description

Sliding limit switch is installed on seat cushion frame. Sliding limit switch detects condition of seat
sliding.
DRIVER SIDE : Component Function Check
Step 1
DRIVER SIDE : Diagnosis Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1-3

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Step 3 (Continued)-5
DRIVER SIDE : Component Inspection
Step 1
Passenger Side
SLIDING LIMIT SWITCH
PASSENGER SIDE
PASSENGER SIDE : Description
Sliding limit switch is installed on seat cushion frame. Sliding limit switch detects condition of seat
sliding.

PASSENGER SIDE : Diagnosis Procedure
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 1 (Continued)-5
PASSENGER SIDE : Component Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Testing and Inspection > Forward Switch > Page 603

Step 1
Sliding Switch
SLIDING SWITCH
SEATBACK
SEATBACK : Description
Sliding switch is equipped on the seat back. The operation signal inputted to passenger seat
control unit when sliding switch (seat back) is operated.
SEATBACK : Component Function Check
Step 1

SEATBACK : Diagnosis Procedure

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Step 1-3

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Step 3 (Continued)-6
SEATBACK : Component Inspection
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Seat Switch > Component Information > Service and Repair > Sliding Switch

Power Seat Switch: Service and Repair Sliding Switch
SLIDING SWITCH
SEATBACK
SEATBACK : Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Remove seat back pad. 2. Remove screws (A). 3. Disconnect seat sliding switch (seat back)
connector. 4. Remove seat sliding switch (seat back) (2) from seat back frame (1).
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clamp the harness to the right place.
NOTE: After installing the driver seat, perform additional service when removing battery negative
terminal. Refer to SE-7, «ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE
TERMINAL : Special Repair Requirement». See: Body and Frame/Seats/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Service and Repair Lumbar Support Switch
LUMBAR SUPPORT SWITCH
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Remove seat cushion outer finisher (1). 2. Remove lumbar support switch (2).
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clamp the harness to the right place.
NOTE: After installing the driver seat, perform additional service when removing battery negative
terminal. Refer to SE-7, «ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE
TERMINAL : Special Repair Requirement». See: Body and Frame/Seats/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Power Seat Switch: Service and Repair Power Seat Switch
POWER SEAT SWITCH
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
NOTE: The same procedure is also performed for driver side and passenger side.
1. Remove the seat cushion outer finisher (1). 2. Remove the screws (A). 3. Remove the power
seat switch (2) from the seat cushion outer finisher (1).
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clamp the harness to the right place.
NOTE: After installing the driver seat or passenger side, perform additional service when removing
battery negative terminal. Refer to SE-7, «ADDITIONAL SERVICE WHEN REMOVING BATTERY
NEGATIVE TERMINAL : Special Repair Requirement». See: Body and Frame/Seats/Testing and
Inspection

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Power Seat Switch: Service and Repair Side Support Switch
SIDE SUPPORT SWITCH
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Remove seat cushion outer finisher (1).
2. Remove screws (A). 3. Remove side support switch (2) from seat cushion outer finisher.
INSTALLATION
Install in the reverse order of removal.
CAUTION: Be sure to clamp the harness to the right place.
NOTE: After installing the driver seat, perform additional service when removing battery negative
terminal. Refer to SE-7, «ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE
TERMINAL : Special Repair Requirement». See: Body and Frame/Seats/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Trunk / Liftgate Lock Switch > Component Information > Service and Repair > Trunk Lid Opener
Request Switch

Power Trunk / Liftgate Lock Switch: Service and Repair Trunk Lid Opener Request Switch
TRUNK LID OPENER REQUEST SWITCH
Removal and Installation
REMOVAL
1. Remove the rear combination lamp LH (1).
2. Remove the trunk lid opener request switch connector (B). 3. Remove the trunk lid opener
request switch mounting screw (A), and then remove trunk lid opener request switch (2) from rear
combination lamp
LH (1).
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Trunk / Liftgate Lock Switch > Component Information > Service and Repair > Trunk Lid Opener
Request Switch > Page 615

Power Trunk / Liftgate Lock Switch: Service and Repair Trunk Lid Opener Switch
TRUNK LID OPENER SWITCH
Removal and Installation
REMOVAL
1. Remove the instrument driver lower panel.
2. Remove the trunk lid opener switch (1) from instrument driver lower panel, and then remove
pawl (A). Press trunk lid opener switch (1) front side
to disengage from instrument driver lower panel.
INSTALLATION
Install in the reverse order of removal

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Power Trunk / Liftgate Lock Switch > Component Information > Service and Repair > Trunk Lid Opener
Request Switch > Page 616

Power Trunk / Liftgate Lock Switch: Service and Repair Trunk Lid Opener Cancel Switch
TRUNK LID OPENER CANCEL SWITCH
Removal and Installation
REMOVAL
1. Remove the instrument assist lower panel.
2. Remove the trunk lid opener cancel switch (1) from instrument assist lower panel, and then
remove pawl (A). Press trunk lid opener cancel switch
(1) back side to disengage from instrument assist lower panel.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Seat Memory Switch > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Body and Frame > Seat Memory Switch > Component Information > Locations > Page 620

Seat Memory Switch: Testing and Inspection
TILT & TELESCOPIC SWITCH

Description
Tilt and telescopic switch as a unit, transmit switch operation signal to automatic drive positioner
control unit.
Component Function Check
Step 1
Diagnosis Procedure
Step 1-2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Step 2 (Continued)-5
Component Inspection
Step 1

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Step 1 (Continued)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Seat Memory Switch: Service and Repair
SEAT MEMORY SWITCH
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Disconnect battery negative terminal.
2. Remove front door finisher (1). 3. Press pawls and remove seat memory switch (2) from front
door finisher (1).
INSTALLATION
Install in reverse order of removal.
CAUTION: Be sure to clump the harness to the right place.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Brake Booster Vacuum Sensor > Component Information > Service and Repair

Brake Booster Vacuum Sensor: Service and Repair
BRAKE BOOSTER PRESSURE SENSOR
BR-36 Exploded View
Removal and Installation
REMOVAL
1. Remove master cylinder cover. 2. Remove brake booster pressure sensor. 3. Remove vacuum
hose.
INSTALLATION
Note the following, installation is the reverse order of removal.
CAUTION:
^ Insert vacuum hose at least 25 mm (0.98 in) (A).
^ Never use lubricating oil during assembly.
^ Face the marking side vehicle front when assembling (brake booster side).
^ Face the marking side connector when assembling (brake booster pressure sensor side).
Inspection
INSPECTION AFTER REMOVAL
^ Check for correct assembly, damage and deterioration.
^ Check for brake booster pressure sensor. Refer to EC-352, «Component Inspection».

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Braking Sensor/Switch: Service and Repair
ON-VEHICLE MAINTENANCE
BRAKE PEDAL STROKE SENSOR
Exploded View
SBC-39 Exploded View
Removal and Installation
REMOVAL
1. Remove the driver instrument panel (lower). 2. Disconnect the brake pedal stroke sensor
connector (A). 3. Remove the screws. 4. Remove the brake pedal stroke sensor (1).
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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2. Disconnect ICC sensor integrated unit connector. 3. Remove mounting bolts from ICC sensor
integrated unit. 4. Remove ICC sensor integrated unit.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC

Steering Angle Sensor: Locations VDC

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 640

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 641

Steering Angle Sensor: Locations TCS

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 642

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 643

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 644

Steering Angle Sensor: Locations ABS

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 645

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 646

Steering Angle Sensor: Locations EBD

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > VDC >
Page 647

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > Page 648

Steering Angle Sensor: Testing and Inspection
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Description
In case of doing work that applies to the list below, make sure to adjust neutral position of steering
angle sensor before running vehicle.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Special Repair
Requirement
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION: To adjust neutral position of steering angle sensor, make sure to use CONSULT-III.
(Adjustment cannot be done without CONSULT-III.)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2.
2.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT-III screen, touch «WORK SUPPORT» and «ST ANG SEN ADJUSTMENT» in
order. 2. Touch «START».
CAUTION: Do not touch steering wheel while adjusting steering angle sensor.
3. After approximately 10 seconds, touch «END».
NOTE: After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.

CAUTION: Be sure to perform above operation.
>> GO TO 3.
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop. 2. Select «DATA MONITOR».
Then make sure «STR ANGLE SIG» is within 0 ± 2.5 degrees. Is the steering angle within the
specified range?
YES >> GO TO 4. NO >>
Perform the neutral position adjustment for the steering angle sensor again, GO TO 1.
4.ERASE THE SELF-DIAGNOSIS MEMORY

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > Page 649

Erase the self-diagnosis memories of the ABS actuator and electric unit (control unit), ECM, 4WAS
and ICC. ^
ABS actuator and electric unit (control unit): Refer to BRC-26, «CONSULT-III Function». See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Consult-III Function
^ ECM: Refer to EC-120, «CONSULT-III Function».
^ 4WAS ^
4WAS FRONT CONTROL UNIT: Refer to STC-39, «CONSULT-III Function [4WAS(FRONT)]».
^ 4WAS MAIN CONTROL UNIT: Refer to STC-43, «CONSULT-III Function
[4WAS(MAIN)/RAS/HICAS]».
^ ICC: Refer to CCS-23, «CONSULT-III Function (ICC)».
Are the memories erased?
YES >> INSPECTION END NO >>
Check the items indicated by the self-diagnosis.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > Page 650

Steering Angle Sensor: Adjustments
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Description
In case of doing work that applies to the list below, make sure to adjust neutral position of steering
angle sensor before running vehicle.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Special Repair
Requirement
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION: To adjust neutral position of steering angle sensor, make sure to use CONSULT-III.
(Adjustment cannot be done without CONSULT-III.)
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2.
2.PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT-III screen, touch «WORK SUPPORT» and «ST ANG SEN ADJUSTMENT» in
order. 2. Touch «START».
CAUTION: Do not touch steering wheel while adjusting steering angle sensor.
3. After approximately 10 seconds, touch «END».
NOTE: After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Steering Angle Sensor, Traction Control > Component Information > Locations > Page 652

Steering Angle Sensor: Service and Repair
Removal and Installation
BRC-105 Exploded View
REMOVAL
1. Remove spiral cable assembly. 2. Remove steering angle sensor from spiral cable assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION: ^
After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-8,
«ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Description». See:
Adjustments
^ Perform 4WAS front actuator adjustment. Refer to STC-27, «4WAS FRONT ACTUATOR
NEUTRAL POSITION ADJUSTMENT: Description».

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Traction Control Switch: Locations VDC

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Traction Control Switch: Locations TCS

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Traction Control Switch: Locations ABS

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Traction Control Switch: Locations EBD

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Wheel Speed Sensor > Component Information > Technical Service Bulletins > ABS/TCS Wheel Speed Sensor Diagnostics

Wheel Speed Sensor: Technical Service Bulletins ABS/TCS — Wheel Speed Sensor Diagnostics

Classification: BR10-008
Reference: ITB10-056
Date: August 24, 2010
INFINITI; ABS/VDC WHEEL SPEED SENSOR DIAGNOSIS
APPLIED VEHICLES: 2007-2011 Infiniti vehicles equipped with ABS/VDC
SERVICE INFORMATION
This bulletin is being released to assist in accurate diagnosis when DTC:
^ C1101-C1104 [Wheel Speed Sensor 1] And/or
^ C1105-C1108 [Wheel Speed Sensor 2] is stored in the related ECU.
See below for additional diagnostic information.
Use of CONSULT-III and/or Wheel Sensor Tester Essential Tool J-45741 is recommended for
more efficient diagnosis.
IMPORTANT:
> ALWAYS fully diagnose the code before performing any repairs.
> DO NOT replace a sensor based on DTC alone without confirming a specific issue.
To diagnose a potential wheel speed sensor incident these basic steps should be followed.
1. Check the codes from the control unit and determine whether there is a wheel speed sensor
DTC and which wheel it is from. Check the sensor outputs using CONSULT-III DATA MONITOR
where applicable.
2. Go to the sensor and rotor at issue. Check for damage debris contamination and the electrical
connection.
3. With key off, disconnect the sensor and check the connector for any damage, including
damaged terminal, terminal «push-out», female terminal «Spread-open», and any oxidation or dirt.
4. Check the wheel speed sensor output signal directly at the sensor. This is done with Wheel
Sensor Tester Essential Tool J-45741. Make sure the key is off before disconnecting any
connectors. While checking signal output move around the wires to see if movement produces an
interruption.
NOTE:
^ Use the Tester. DO NOT test a wheel speed sensor with a «continuity» (test) light.
^ A good result from the Tester will most likely remove any concern of an incident with the wheel
speed sensor itself.
5. Check continuity of circuits. Use the applicable Electronic Service Manual to find the wheel
speed sensor circuit being inspected at the control unit. Check pin to pin continuity from the control
unit connector to the wheel speed sensor connector-wire harness side.
CAUTION:
Do not damage the connectors.

After checking continuity on each individual circuit pin to pin:
^ Check continuity between the two separate wheel speed sensor circuits to ensure there is no
continuity across (between) the two separate circuits.
^ Check each circuit to ensure there is no continuity to ground.
The steps above are general diagnostic guidelines. Always consult the applicable Electronic
Service Manual for specific instructions on the diagnosis and repair of DTCs.

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Wheel Speed Sensor: Locations VDC

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Wheel Speed Sensor: Locations TCS

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Wheel Speed Sensor: Locations ABS

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Wheel Speed Sensor > Component Information > Locations > VDC > Page 677

Wheel Speed Sensor: Locations EBD

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Brakes and Traction Control > Wheel Speed Sensor > Component Information > Service and Repair > Sensor Rotor

Wheel Speed Sensor: Service and Repair Sensor Rotor
Front
FRONT SENSOR ROTOR
FRONT SENSOR ROTOR: Removal and Installation

REMOVAL
Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing
assembly.
INSTALLATION
Sensor rotor cannot be disassembled. Remove the sensor rotor together with hub bearing
assembly.
Rear
REAR SENSOR ROTOR
BRC-101 Exploded View
REAR SENSOR ROTOR: Removal and Installation
REMOVAL
^ Follow the procedure below to remove rear sensor rotor. ^
Remove side flange.
^ Using a bearing replacer (suitable tool) and puller (suitable tool), remove sensor rotor from side
flange.
INSTALLATION
CAUTION: Do not reuse sensor rotor.
^ Follow the procedure below to install rear sensor rotor. ^
Using a drifts, press rear sensor rotor onto side flange.
A: Drift [SST: ST30720000 (J-25405)]

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681

B: Drift [SST: ST27863000 ( — )] C: Drift [SST: KV40104710 ( — )]

^ Install side flange.

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682

Wheel Speed Sensor: Service and Repair Wheel Speed Sensor
Removal and Installation
BRC-100 Exploded View
NOTE: The above figure (front side) shows left side. Right side is the mirror image.
REMOVAL
Pay attention to the following when removing sensor.
CAUTION: ^
Do not twist sensor harness as much as possible, when removing it. Pull sensors out without
pulling sensor harness.
^ Take care to avoid damaging sensor edges or rotor teeth. Remove wheel sensor first before
removing front or rear wheel hub. This is to avoid damage to sensor wiring and loss of sensor
function.
INSTALLATION
Pay attention to the following when installing wheel sensor. Tighten installation bolts to the
specified torques. ^

When installing, make sure there is no foreign material such as iron chips on and in the mounting
hole of the wheel sensor. Make sure no foreign material has been caught in the sensor rotor.
Remove any foreign material and clean the mount.
^ When installing wheel sensor, be sure to press rubber grommets in until they lock at locations
shown above in the figure. When installed, harness must not be twisted.

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Yaw Rate Sensor: Locations VDC

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Yaw Rate Sensor: Locations TCS

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Yaw Rate Sensor: Locations ABS

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Yaw Rate Sensor: Locations EBD

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Yaw Rate Sensor: Service and Repair
YAW RATE/SIDE G SENSOR
BRC-104 Exploded View
Removal and Installation
REMOVAL
CAUTION: ^
Do not drop or strike yaw rate/side G sensor, or do not use power tool etc., because yaw rate/side
G sensor is sensitive to the impact.
1. Remove center console. 2. Disconnect yaw rate/side G sensor harness connector. 3. Remove
mounting bolts. Remove yaw rate/side G sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION: ^
Do not drop or strike yaw rate/side G sensor, or do not use power tool etc., because yaw rate/side
G sensor is sensitive to the impact.

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Brake Switch (Cruise Control): Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Clutch Switch: Locations

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Cruise Control Switch: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Engine > Oil Pressure Switch (For Fuel Pump) > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches HVAC > Ambient Temperature Sensor / Switch HVAC > Component Information > Locations

Ambient Temperature Sensor / Switch HVAC: Service and Repair Ambient Sensor
AMBIENT SENSOR
Exploded View
VTL-25 Exploded View

Removal and Installation
REMOVAL
1. Remove front grille.
2. Disconnect ambient sensor connector, and then remove ambient sensor (1).
INSTALLATION
Installation is basically the reverse order of removal.

Ambient Temperature Sensor / Switch HVAC: Service and Repair Intake Sensor

INTAKE SENSOR
Exploded View
VTL-28 Exploded View (Part 1)

VTL-28 Exploded View (Part 2)
Removal and Installation
REMOVAL
1. Remove low-pressure pipe 1 and high-pressure pipe 2.
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
2. Slide evaporator (1) to passenger side, and then remove intake sensor (2).
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:

— Replace O-rings with new ones. Then apply compressor oil to them when installing.
— Mark the mounting position of intake sensor bracket prior to removal so that the reinstalled sensor
can be located in the same position.
— Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
— Insert piping securely until a click is heard.
— After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
— Check for leakages when recharging refrigerant.

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Cabin Temperature Sensor / Switch: Service and Repair
IN-VEHICLE SENSOR
Exploded View
VTL-26 Exploded View
Removal and Installation

REMOVAL
1. Remove instrument driver lower panel.
2. Remove mounting screw (A), and then remove in-vehicle sensor (1).
INSTALLATION
Installation is basically the reverse order of removal.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches HVAC > Refrigerant Pressure Sensor / Switch, HVAC > Component Information > Locations > Automatic Air Conditioner

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches HVAC > Refrigerant Pressure Sensor / Switch, HVAC > Component Information > Locations > Automatic Air Conditioner >
Page 732

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Refrigerant Pressure Sensor / Switch: Service and Repair
REFRIGERANT PRESSURE SENSOR
Exploded View
HA-52 Exploded View
Removal and Installation

REMOVAL
1. Remove liquid tank.
2. Fix the liquid tank (1) with a vise (A). Remove the refrigerant pressure sensor (2) with a wrench
(B).
CAUTION: Be careful not to damage liquid tank.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
— Apply compressor oil to O-ring of refrigerant pressure sensor when installing.
— Check for leakages when recharging refrigerant.

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Solar Sensor: Service and Repair
SUNLOAD SENSOR
Exploded View
VTL-27 Exploded View
Removal and Installation

REMOVAL
1. Remove front defroster grille (left).
2. Disconnect sunload sensor connector, and then remove sunload sensor (1).
INSTALLATION
Installation is basically the reverse order of removal.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Instrument Panel > Door Switch > Component Information > Locations > Parking Brake Release Warning Chime

Door Switch: Service and Repair
DOOR SWITCH
Removal and Installation
REMOVAL
1. Remove the door switch mounting bolt (A), and then remove door switch (1).
INSTALLATION
Install in the reverse order of removal.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Instrument Panel > Fuel Gauge Sender > Component Information > Service and Repair > Removal and Installation

Fuel Gauge Sender: Service and Repair Removal and Installation
ON-VEHICLE REPAIR
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Exploded View
FL-5 Exploded View
Removal and Installation
WARNING: Read «General Precautions» when working on the fuel system. Refer to GI-25,
«General Precautions».
REMOVAL
1. Check fuel level on fuel gauge. If fuel gauge indicates more than the level as shown in the figure
(full or almost full), drain fuel from fuel tank until
fuel gauge indicates level as shown in the figure or below.

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NOTE: Because fuel will be spilled when removing main and sub fuel level sensor units for the top
of the fuel is above the main and sub fuel level sensor units installation surface.
— As a guide, fuel level becomes the position as shown in the figure or below when approximately
20 l (5-1/4 US gal, 4-3/8 Imp gal) of fuel are drained from fuel tank.
— In a case that fuel pump does not operate, perform the following procedure.
a. Insert hose of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening
to draw fuel from fuel filler tube. b. Disconnect fuel filler hose from fuel filler tube. c. Insert fuel tube
into fuel tank through fuel filler hose to draw fuel from fuel tank.
2. Release the fuel pressure from the fuel lines. Refer to EC-601, «Inspection». See: Engine,
Cooling and Exhaust/Engine/Cylinder Head
Assembly/Fuel Pressure Release/Service and Repair
3. Open fuel filler lid. 4. Open filler cap and release the pressure inside fuel tank. 5. Remove rear
seat cushion.
6. Peel off floor carpet, then remove inspection hole cover (1) units by turning clips (2) clockwise by
90 degrees.
Right side: Main fuel level sensor unit, fuel filter and fuel pump assembly Left side: Sub fuel level
sensor unit
7. Disconnect harness connector (3) and fuel feed tube (2).
Disconnect quick connector as follows:

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— Hold the sides of connector, push in tabs and pull out fuel feed tube. A: Pull B: Push in tabs

— If quick connector sticks to tube of main fuel level sensor unit, push and pull quick connector
several times until they start to move.Then disconnect them by pulling.
CAUTION:
— Quick connector (1) can be disconnected when the tabs (F) are completely depressed. Never
twist it more than necessary. B: Connection (Cross-section) D: To under floor fuel line E: To fuel
tank G: Disconnection
— Never use any tools to disconnected quick connector.
— Keep resin tube (C) away from heat. Be especially careful when welding near the resin tube.
— Prevent acid liquid such as battery electrolyte, etc. from getting on resin tube.
— Never bend or twist resin tube during installation and disconnection.
— Never remove the remaining retainer (2) on hard tube (or the equivalent) (A) except when resin
tube or retainer is replaced.
— When resin tube or hard tube (or the equivalent) is replaced, also replace retainer with new one.
Retainer color: Green

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Instrument Panel > Fuel Gauge Sender > Component Information > Service and Repair > Removal and Installation > Page
753

— To keep the connecting portion clean and to avoid damage and foreign materials, cover them
completely with plastic bags (A) or something similar.

8. Remove main fuel level sensor unit, fuel filter and fuel pump assembly, and sub fuel level sensor
unit as follows:
CAUTION: Never bend float arm during removal.
— Avoid impacts such as falling when handling components.
a. Removal of main fuel level sensor unit, fuel filter and fuel pump assembly:
i. Remove retainer.
ii. Raise main fuel level sensor unit, fuel filter and fuel pump assembly, and using snap ring pliers
(A), remove fuel hose connector (1).
2: Fuel hose
CAUTION: Be careful not to damage fuel hose connector by expanding them excessively.
b. Removal of sub fuel level sensor unit:
i. Remove retainer.
ii. Raise and release sub fuel level sensor unit to remove.
INSTALLATION
Note to the following, and install in the reverse order of removal.
Fuel hose
— When installing fuel hose connector (1) insert them fully until a click sound of full stopper
engagement is heard. 2 : Fuel hose

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754

Main and Sub Fuel Level Sensor Unit

— Face main and sub fuel level sensor units as shown in the figure, and install them with the knock
pin (C) on back aligned with pin hole on fuel tank.
— Install retainer so that its notch becomes parallel with the notch on fuel tank.
— Tighten retainer mounting bolts evenly.
Quick Connector
— Connect quick connector as follows:
1. Check the connection for damage or any foreign materials. 2. Align the connector with the tube,
then insert the connector straight into the tube until a click sound is heard. 3. After connecting,
check that the connection is secure by following method.
— Pull the tube and the connector to check they are securely connected. A : Pull
— Visually confirm that the two retainer tabs are connected to the connector.
Inspection

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755

INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.
1. Turn ignition switch «ON» (with engine stopped), then check connections for leakage by applying
fuel pressure to fuel piping. 2. Start engine and let it idle and check there are no fuel leaks at the
fuel system connections.

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756

Fuel Gauge Sender: Service and Repair Disassembly and Assembly

DISASSEMBLY AND ASSEMBLY
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Exploded View
FL-13 Exploded View
Disassembly
CAUTION: Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
Remove fuel level sensor unit as follows:
1. Disconnect harness connector (A).
— Hold connector by fingers and pull it out, because there is no stopper release tab.
2. Using suitable tool, pull up tabs points as shown in the figure (two points) to release the lock.
1: Fuel level sensor unit A: Pull up tabs
CAUTION: Be careful not to damage it.

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757

3. After fixing tabs are disengaged, slide fuel level sensor unit (1) out in direction shown by the
arrow.
A : Pull
CAUTION: Never disassemble fuel filter and fuel pump assembly.
Assembly
CAUTION: Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
1. Check for damage of fuel level sensor unit installation position on the side of fuel filter and fuel
pump assembly. 2. Slide fuel level sensor unit until it aligns to installation groove, then insert it until
it stops.
— After inserting, apply force in reverse direction (removal direction) to ensure it cannot be pulled
out.
3. Connect the black (A) and white (B) harnesses so that they are in the positions shown in the
figure.
— Securely insert harness connector until it stops.

Ambient Light Sensor: Service and Repair
OPTICAL SENSOR
Exploded View
EXL-193 Exploded View
Removal and Installation
REMOVAL
1. Insert an appropriate tool between the optical sensor and the instrument upper panel. Pull out
the optical sensor upward. 2. Disconnect the connector. Remove the optical sensor.
INSTALLATION
Install in the reverse order of removal.

Backup Lamp Switch: Testing and Inspection
Component Parts Location
Component Inspection
1.CHECK BACK-UP LAMP SWITCH
Check continuity between back-up lamp switch terminals with control lever turned to 1st to 6th and
reverse position.
Is the inspection result normal?
YES >> INSPECTION END NO >>
Replace back up lamp switch.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Brake Light Switch > Component Information > Technical Service Bulletins > Customer Interest for
Brake Light Switch: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON

Brake Light Switch: Customer Interest Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON
Classification: BR08-007
Reference: ITB09-007
Date: January 30, 2009
ABS DTC C1142 STORED
APPLIED VEHICLES: 2007 — 2008 G35 Sedan (V36) 2007 G35 Coupe (CV35) 2009 G37 Sedan
(V36) 2008 — 2009 G37 Coupe (CV36) 2006 — 2009 M35/M45 (Y50)
IF YOU CONFIRM
DTC code C1142 is stored in the ABS system,
NOTE:
If code C1142 is stored, the ABS, SLIP, and VDC OFF lights will likely be ON.
ACTIONS
Follow the flow chart in the Service Procedure for diagnostic and repair steps.
NOTE:
Make sure the brake pedal and stop lamp switch adjustments are correct, and the stop lamp switch
and circuit are operating correctly before replacing the ABS Actuator and Electronic Control Unit.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

CLAIMS INFORMATION

SERVICE PROCEDURE

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Brake Light Switch > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Brake Light Switch: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON

Brake Light Switch: All Technical Service Bulletins Brakes — DTC C1142/ABS, SLIP, VDC OFF
Lamps ON
Classification: BR08-007
Reference: ITB09-007
Date: January 30, 2009
ABS DTC C1142 STORED
APPLIED VEHICLES: 2007 — 2008 G35 Sedan (V36) 2007 G35 Coupe (CV35) 2009 G37 Sedan
(V36) 2008 — 2009 G37 Coupe (CV36) 2006 — 2009 M35/M45 (Y50)
IF YOU CONFIRM
DTC code C1142 is stored in the ABS system,
NOTE:
If code C1142 is stored, the ABS, SLIP, and VDC OFF lights will likely be ON.
ACTIONS
Follow the flow chart in the Service Procedure for diagnostic and repair steps.
NOTE:
Make sure the brake pedal and stop lamp switch adjustments are correct, and the stop lamp switch
and circuit are operating correctly before replacing the ABS Actuator and Electronic Control Unit.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Brake Light Switch > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Brake Light Switch: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON > Page 782

CLAIMS INFORMATION

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Brake Light Switch > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Brake Light Switch: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON > Page 783

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Brake Light Switch > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Brake Light Switch: > 09-007 > Jan > 09 > Brakes — DTC C1142/ABS, SLIP, VDC OFF Lamps ON > Page 784

SERVICE PROCEDURE

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System

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System > Page 789

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System > Page 790

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System > Page 791

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System > Page 792

Combination Switch: Locations

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System > Page 793

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System > Page 794

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System > Page 795

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System > Page 796

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System > Page 797

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System > Page 798

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System > Page 799

Combination Switch: Service and Repair
COMBINATION SWITCH
Exploded View
BCS-80 Exploded View
REMOVAL
1. Remove steering column cover. 2. Remove screws. 3. Disconnect the connector. 4. Pull up the
combination switch to remove it.
INSTALLATION
Install in the reverse order of removal.

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805

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806

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807

Headlamp Alignment Sensor: Procedures
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description
Perform «LEVELIZER ADJUSTMENT» with CONSULT-III when replacing the height sensor.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Special Repair Requirement
Step 1

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817

Headlamp Alignment Sensor: Removal and Replacement
HEIGHT SENSOR
Exploded View
EXL-199 Exploded View
Removal and Installation
REMOVAL
1. Remove the height sensor mounting nut. 2. Remove the height sensor lever link bracket
mounting bolt. 3. Disconnect the height sensor connector. 4. Disconnect the height sensor.
INSTALLATION
Install in the reverse order of removal.
CAUTION: Perform the levelizer adjustment when removing the height sensor. Refer to EXL-7,
«LEVELIZER ADJUSTMENT: Special Repair Requirement». See: Lighting and
Horns/Headlamp/Adjustments

Headlamp Alignment Switch: Service and Repair
AFS SWITCH
Exploded View
EXL-198 Exploded View
Removal and Installation
REMOVAL
1. Remove the instrument driver lower panel. 2. Widen the pawl. And then remove AFS switch.
INSTALLATION
Install in the reverse order of removal.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Lighting and Horns > Trunk Lamp Switch > Component Information > Locations > Interior Room Lamp Battery Saver
System

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System > Page 826

Turn Signal Switch: Service and Repair
LIGHTING AND TURN SIGNAL SWITCH
Exploded View
Lighting and turn signal switch is integrated in the combination switch. BCS-80, «Exploded View».
BCS-80 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Accelerator Pedal Position Sensor >
Component Information > Locations

Accelerator Pedal Position Sensor: Locations

Accelerator Pedal Position Sensor: Service and Repair
ON-VEHICLE REPAIR
ACCELERATOR CONTROL SYSTEM
Exploded View
ACC-3 Exploded View
Removal and Installation
REMOVAL
1. Remove the cap and the inside mounting bolt. 2. Remove accelerator pedal assembly. 3.
Disconnect accelerator pedal position sensor harness connector.
CAUTION: Never disassemble accelerator lever. Never remove accelerator pedal position sensor from
accelerator lever.
— Avoid impact from dropping etc. during handling.
— Be careful to keep accelerator lever away from water.
INSTALLATION

Installation is the reverse order of removal.
Inspection
INSPECTION AFTER INSTALLATION
— Check accelerator pedal moves smoothly within the whole operation range when it is fully
depressed and released.
— Check accelerator pedal securely returns to the fully released position.
— For the electrical inspection of accelerator pedal position sensor, refer to EC-458, See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code
Tests and Associated Procedures/P Code Charts/P2122 «Description», EC-462, «Description» See:
Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures/P Code Charts/P2127 and EC-466, «Description».
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic
Trouble Code Tests and Associated Procedures/P Code Charts/P2138
CAUTION: When harness connector of accelerator pedal position sensor is disconnected, perform
Accelerator Pedal Released Position Learning. Refer to EC-18, «ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Description». See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Programming and Relearning/Accelerator Pedal Released
Position Learning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure

Air Flow Meter/Sensor: Technical Service Bulletins Engine Controls — Air Flow Meter Service
Procedure
Classification: EC05-012A
Reference: ITB05-051A
Date: July 21, 2008
AIR FLOW METER SERVICE
This bulletin has been amended. Applied Vehicles has been updated. Please discard previous
copies of this bulletin.
APPLIED VEHICLES: 2003 — 2008 G35 (V35/V36 and CV35) 2004 — 2008 FX45/FX35 (S50) 2006 2008 M45/M35 (Y50) 2008 G37 (CV36) 2005 — 2006 Q45 (F50) 2008 EX35 (J50)
IF YOU CONFIRM
The airflow meter needs to be replaced for any reason,
ACTION
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
2. Remove the airflow meter sensor from the airflow meter housing.
3. Thoroughly clean the air filter box and the airflow meter housing.
4. Install a new airflow meter sensor.
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts
information.
5. Reinstall the top of the air filter box with airflow meter assembly back into the vehicle with a new
Genuine Nissan air filter.
IMPORTANT:

The purpose of «ACTION» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service Procedure as it contains information that is essential to
successfully completing this repair.
PARTS INFORMATION
CLAIM INFORMATION
SERVICE PROCEDURE
1. Remove the top of the air filter box with airflow meter assembly from the vehicle.
^ Refer to section EC in the appropriate Electronic Service Manual (ESM) for vehicle specific
removal information.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 840

2. Remove the airflow meter sensor from the airflow meter housing.

^ It’s held on with 2 T20 Tamper Resistant Torx(R) screws.
3. Thoroughly clean the air filter box and the airflow meter housing.
^ Wipe out the entire inside area of the airflow meter housing with a clean rag (see Figure 2).
^ Use low-pressure compressed air or a shop vacuum to clean out all dust, dirt, and debris from
inside both halves of the air filter box and inside of the airflow meter housing (see Figures 2 and 3).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 841

CAUTION:
Cover the ducting from the throttle body with a clean shop towel or other method so dirt or debris
can not enter the engine intake manifold.
4. Install the new airflow meter sensor into the old airflow meter housing (see Figure 1).
^ Do Not replace the entire airflow meter housing; replace only the sensor listed in the Parts
information.
^ Tighten the screws to 1.2 — 1.8 N.m (0.12 — 0.18 Kg-m, 11 — 16 in-lb)
5. Reinstall the top of the air filter box with the airflow meter assembly back into the vehicle with a
new Genuine Nissan air filter.
IMPORTANT:
^ A new Genuine Nissan air filter element must be used for all warranty claims and any other claim
for which Nissan pays.
^ A new Genuine Nissan air filter element is designed to be compatible with the Nissan airflow
meter and has proven to provide adequate dust protection.
^ It is strongly recommended that customers continue using genuine Nissan air filters when
replacement is required for routine maintenance.
Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 842

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 843

Air Flow Meter/Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 844

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 845

Air Flow Meter/Sensor: Service and Repair
AIR CLEANER AND AIR DUCT
EM-26 Exploded View
Removal and Installation
REMOVAL
1. Disconnect mass air flow sensor harness connector. 2. Disconnect PCV hose. 3. Remove air
cleaner case & mass air flow sensor assembly and air duct & air hose by disconnecting their joints.

^ Add marks as necessary for easier installation.
4. Remove mass air flow sensor from air cleaner case, as necessary
CAUTION: Handle mass air flow sensor according to the following instructions. ^
Never shock it.
^ Never disassemble it.
^ Never touch its sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.
Inspection
INSPECTION AFTER REMOVAL

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 846

Inspect air duct and resonator assembly for crack or tear. ^

If anything is found, replace air duct and resonator assembly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Battery Current Sensor >
Component Information > Description and Operation

Battery Current Sensor: Description and Operation
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
System Diagram
System Description
By performing the power generation voltage variable control, the engine load due to the power
generation of the alternator is reduced and fuel consumption is decreased.
NOTE: When any malfunction is detected in the power generation voltage variable control system,
the power generation is performed according to the characteristic of the IC voltage regulator of the
alternator.
Component Description

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Camshaft Position Sensor >
Component Information > Locations

Camshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Camshaft Position Sensor >
Component Information > Locations > Page 853

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Crankshaft Position Sensor >
Component Information > Locations

Crankshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Component Information > Locations > Page 857

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Intake Air Temperature Sensor >
Component Information > Locations

Intake Air Temperature Sensor: Locations

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Component Information > Locations > Page 861

Knock Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Page 865

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Manifold Pressure/Vacuum Sensor >
Component Information > Locations

Manifold Pressure/Vacuum Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Manifold Pressure/Vacuum Sensor >
Component Information > Locations > Page 869

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure

Oxygen Sensor: Technical Service Bulletins Engine Controls — Seized O2 Sensor Removal
Procedure

Classification: EM09-016
Reference: ITB10-008
Date: January 19, 2010
REMOVAL PROCEDURE FOR SEIZED EXHAUST SENSOR
APPLIED VEHICLES: All Infiniti vehicles
SERVICE INFORMATION
If an exhaust sensor is seized in the exhaust manifold/catalyst/front tube perform the procedure
described in this bulletin to remove the sensor and prevent unnecessary replacement of the
exhaust manifold/catalyst/front tube.
In most cases this procedure is successful. This is because the threads of the exhaust sensors are
made of a softer material than the part they thread into on the exhaust manifold/catalyst/front tube.
NOTE:
The replacement of exhaust manifolds/catalysts/front tubes for stripped exhaust sensor threads
may not be considered a warrantable expense.
This procedure can be performed by two methods:
Method # 1. If the Sensor Can Be Easily Accessed
^ The procedure can be performed on the vehicle.
^ The exhaust manifold/catalyst/front tube will not have to be removed.
Method # 2. If the Sensor Cannot Be Easily Accessed
^ The exhaust manifold/catalyst/front tube must be removed from the vehicle.
^ The procedure will be performed with the part clamped in a vice.
Method # 2 is described in this bulletin. Method # 1 is the same as Method # 2 except that it is
performed on the vehicle.
SERVICE PROCEDURE
Rust Penetrant
Recommended rust penetrants to be used in this procedure:
NOTES:
^ Rust penetrant is considered a shop supply.
^ Nissan Rust Penetrant can be ordered through the Nissan Direct Ship Chemical Care Product
Program: Website order via link on dealer portal.
^ WD-40 is available from various local sources.
Removal Tool
^ When removing a seized exhaust sensor with a specialty socket (which contains a slit to
accommodate the wiring harness) it may spread open and strip the sensor.

^ Before this occurs it is recommended to cut the wiring harness from the sensor and use a box
end wrench or 6-point deep well socket.
1. Clamp the exhaust manifold/catalyst/front tube in a vice.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 874

2. Spray the sensor with the rust penetrant for 2 to 3 seconds.

^ It is important that the spray is directed at the base of the sensor to ensure it penetrates into the
threads.
3. Loosen the sensor approximately 10 degrees.
4. Spray with rust penetrant again for 2 to 3 seconds.
5. Tighten the sensor 10 degrees then loosen the sensor 10 degrees.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 875

^ Repeat this motion several times until the sensor begins to turn more easily.

6. Continue the tightening/loosening motion while gradually unscrewing the sensor. Stop when the
sensor will not unscrew any further.
7. Spray with rust penetrant again for 2 to 3 seconds.
8. Repeat steps 6 and 7 until the sensor is removed.
9. Use compressed air to remove any metal debris from inside the boss threads.
CAUTION:
DO NOT perform this step if the procedure is being done on the vehicle (Method # 1). Doing so
may cause metal debris to enter the engine cylinders.
10. If metal debris remains trapped in the boss threads use a spiral nylon brush to remove it.
11. Spray the boss threads with rust penetrant for 2 to 3 seconds.
12. Run a thread chaser through the boss to clean the threads.
^Use Kent Moore part number J-43897-18 or J43897-12.
13. Use compressed air to remove any remaining debris.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 876

CAUTION:
DO NOT perform this step if the procedure is being done on the vehicle (Method # 1). Doing so
may cause metal debris to enter the engine cylinders.
14. If metal debris remains trapped in the boss threads use a spiral nylon brush to remove it.
15. Tilt the manifold/catalyst/front tube so that the metal debris falls out of the part.
16. Apply compressed air through the boss to blow out any remaining debris.
CAUTION:
DO NOT perform this step if the procedure is being done on the vehicle (Method # 1 ). Doing so
may cause metal debris to enter the engine cylinders.
17. Install the new sensor as described in the applicable Electronic Service Manual (ESM).
Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations

Oxygen Sensor: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations > Page 879

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Information > Locations > Component Locations > Page 880

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Information > Locations > Component Locations > Page 881

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Information > Locations > Component Locations > Page 882

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Information > Locations > Component Locations > Page 884

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Information > Locations > Component Locations > Page 885

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Information > Locations > Component Locations > Page 887

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Information > Locations > Component Locations > Page 889

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Information > Locations > Component Locations > Page 890

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Information > Locations > Component Locations > Page 891

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Information > Locations > Component Locations > Page 892

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Information > Locations > Component Locations > Page 893

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Information > Locations > Component Locations > Page 894

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Information > Locations > Component Locations > Page 895

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Information > Locations > Component Locations > Page 896

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Information > Locations > Component Locations > Page 897

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Information > Locations > Component Locations > Page 898

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Information > Locations > Component Locations > Page 899

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations > Page 900

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Information > Locations > Component Locations > Page 901

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Information > Locations > Component Locations > Page 902

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Information > Locations > Component Locations > Page 903

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Information > Locations > Component Locations > Page 904

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations > Page 905

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations > Page 906

Oxygen Sensor: Connector Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Locations > Component Locations > Page 914

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Power Steering Pressure Switch >
Component Information > Locations

Power Steering Pressure Switch: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Accelerator Pedal Position Sensor >
Component Information > Locations

Accelerator Pedal Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Accelerator Pedal Position Sensor >
Component Information > Locations > Page 923

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure

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Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 928

2. Remove the airflow meter sensor from the airflow meter housing.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 929

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Information > Technical Service Bulletins > Page 930

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Information > Technical Service Bulletins > Page 931

Air Flow Meter/Sensor: Locations

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Information > Technical Service Bulletins > Page 932

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Information > Technical Service Bulletins > Page 934

Inspect air duct and resonator assembly for crack or tear. ^

If anything is found, replace air duct and resonator assembly.

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Component Information > Locations

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Locations

Camshaft Position Sensor: Locations

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Locations > Page 942

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Crankshaft Position Sensor > Component Information
> Locations

Crankshaft Position Sensor: Locations

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> Locations > Page 946

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Ignition Switch: Locations

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> Page 950

Ignition Switch: Service and Repair
PUSH BUTTON IGNITION SWITCH
Removal and Installation
REMOVAL
1. Remove the cluster lid A assembly.
2. Remove the push-button ignition switch (1) from cluster lid A assembly, and then remove pawl
(A). Press push-button ignition switch (1) back to
disengage from cluster lid A assembly.
INSTALLATION
Install in the reverse order of removal.

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Knock Sensor: Locations

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Page 954

Impact Sensor: Service and Repair Crash Zone Sensor
CRASH ZONE SENSOR
Exploded View
SR-14 Exploded View
Removal and Installation

WARNING:
— Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3
minutes.
— Do not use air tools or electric tools for servicing.
REMOVAL
1. Remove the reservoir tank. 2. Remove the crash zone sensor fixing nuts. 3. Disconnect crash
zone sensor harness connector.
CAUTION: Do not use old fixing nuts after removal; replace with new nuts.
— Replace the crash zone sensor if it has been dropped or sustained an impact.
— Replace the crash zone sensor of deployed SRS driver air bag and deployed SRS front
passenger air bag.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
— Do not damage the harness while installing.
— In the case that a malfunction is detected by the air bag warning lamp, reset by the self-diagnosis
function and delete the memory by CONSULT-III.
— In the case that a malfunction is still detected after the above operation, perform self-diagnosis to
repair malfunctions.
— After the work is completed, check that no system malfunction is detected by air bag warning
lamp. Refer to SRC-15, «Diagnosis Description». See: Restraint Systems/Air Bag Systems/Testing
and Inspection/Initial Inspection and Diagnostic Overview

Impact Sensor: Service and Repair Side Air Bag (Satellite) Sensor
SIDE AIR BAG (SATELLITE) SENSOR
Exploded View
SR-15 Exploded View

Removal and Installation
WARNING:
— Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3
minutes.
— Do not use air tools or electric tools for servicing.
REMOVAL
1. Remove the front seat belt. 2. Remove the satellite sensor fixing nuts. 3. Disconnect harness
connector and then remove satellite sensor.
CAUTION: Do not use old fixing nuts after removal; replace with new nuts.
— Replace the satellite sensor if it has been dropped or sustained an impact.
— Replace the satellite sensor of deployed SRS front side air bag module and deployed SRS side
curtain air bag module.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
— Do not damage the harness while installing.
— In the case that a malfunction is detected by the air bag warning lamp, reset by the self-diagnosis
function and delete the memory by CONSULT-III.
— In the case that a malfunction is still detected after the above operation, perform self-diagnosis to
repair malfunctions.
— After the work is completed, check that no system malfunction is detected by air bag warning
lamp. Refer to SRC-15, «Diagnosis

Description». See: Restraint Systems/Air Bag Systems/Testing and Inspection/Initial Inspection and
Diagnostic Overview

Seat Belt Buckle Switch: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Restraint Systems > Seat Occupant Sensor > Component Information > Technical Service Bulletins > Recalls for Seat
Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection

Technical Service Bulletin # 08-045D Date: 081204

REQUIRED SPECIAL TOOLS

^ To install the AC plug to the AC/DC Power Cord:

2. Attach the AC/DC Power Cord and one end of MAT cable, and then turn on the Varistor Test
Tool.

^ One end of MAT cable should be plugged into the MAT port.
3. Connect the other end of the MAT cable to the «Check NG» port as shown.
4. Make sure the LEDs turn ON as shown above.

5. Move MAT connector from «Check NG» to «Check OK» port as shown.

6. Make sure the LEDs turn ON as shown above.
7. Push the Start button on the Varistor Test Tool.
8. After pressing the Start button, make sure the LEDs turn ON as shown above.

PARTS INFORMATION

CLAIMS INFORMATION

Disclaimer
Service Procedure
SERVICE PROCEDURE

Steps 1 and 2.

3. Write down the radio station presets.

4. Turn the ignition OFF.
5. Disconnect both battery cables — negative cable first.
6. Wait at least 3 minutes.

7. Connect the power cord to the Varistor Test Tool.
^ The AC to 18 volt DC power cable has several plug styles to accommodate different global
markets.
^ Select and attach the AC plug style for the U.S. market.
8. Look under the passenger seat; locate and disconnect the OCS connector and connect the MAT
cable.
^ The OCS connector is an 8 pin white connector (only 3 of the pins are used/filled).
^ This is an example — the connector location may be different for your vehicle.

NOTE:

^ Figure 3 shows the Varistor Test Tool connected to a vehicle.
^ Make sure to mark the «Usage Card». Refer to Required Special Tools for Usage Card
information.
9. Turn ON the Varistor Test Tool.

10. Make sure the LEDs turn ON as shown above.

NOTE:
The Service Manual may caution against disassembly of the passenger seat cushion from the seat
frame. It may also instruct that the cushion and frame be replaced as an assembly. Due to changes
in parts manufacturing and availability, the seat cushion can now be replaced separately from the
seat frame on Model and Year vehicles affected by this campaign.
> Make sure each seat cushion hook and strap is properly connected/attached in its original
location.
> Torque mounting bolts according to the appropriate Service Manual.
> WARNING: Make sure all mounting and support clips for electrical connectors and harness are
reinstalled in their original locations.
> Retain the old seat cushion for 30 days for possible inspection by Infiniti.
14. Reconnect the OCS vehicle harness connector.
15. Connect the battery cables positive cable first.

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Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection

Technical Service Bulletin # 08-045D Date: 081204

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Restraint Systems > Seat Occupant Sensor > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection > Page
999

REQUIRED SPECIAL TOOLS

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Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection > Page
1001

^ To install the AC plug to the AC/DC Power Cord:

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2. Attach the AC/DC Power Cord and one end of MAT cable, and then turn on the Varistor Test
Tool.

^ One end of MAT cable should be plugged into the MAT port.
3. Connect the other end of the MAT cable to the «Check NG» port as shown.
4. Make sure the LEDs turn ON as shown above.

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5. Move MAT connector from «Check NG» to «Check OK» port as shown.

6. Make sure the LEDs turn ON as shown above.
7. Push the Start button on the Varistor Test Tool.
8. After pressing the Start button, make sure the LEDs turn ON as shown above.

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Restraint Systems > Seat Occupant Sensor > Component Information > Technical Service Bulletins > All Technical Service
Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection > Page
1005

PARTS INFORMATION

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CLAIMS INFORMATION

Disclaimer
Service Procedure
SERVICE PROCEDURE

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Steps 1 and 2.

3. Write down the radio station presets.

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4. Turn the ignition OFF.
5. Disconnect both battery cables — negative cable first.

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Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection > Page
1009

NOTE:

^ Figure 3 shows the Varistor Test Tool connected to a vehicle.
^ Make sure to mark the «Usage Card». Refer to Required Special Tools for Usage Card
information.
9. Turn ON the Varistor Test Tool.

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10. Make sure the LEDs turn ON as shown above.

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1011

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Bulletins for Seat Occupant Sensor: > 08-045D > Dec > 08 > Recall — Occupant Classification System Inspection > Page
1012

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Starting and Charging > Battery Current Sensor > Component Information > Description and Operation

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Starting and Charging > Clutch Switch > Component Information > Locations > Starting System

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Clutch Switch: Locations Power Distribution System

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Ignition Switch: Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Starting and Charging > Neutral Safety Switch > Component Information > Testing and Inspection

Neutral Safety Switch: Testing and Inspection
Component Parts Location
Component Inspection
1.CHECK PARK/NEUTRAL POSITION (PNP) SWITCH
Check continuity between park/neutral position (PNP) switch terminals with control lever turned to
1st to 6th and reverse position.
Is the inspection result normal?
YES >> INSPECTION END NO >>
Replace park/neutral position (PNP) switch.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Starting and Charging > Start / Stop Switch > Component Information > Service and Repair

Start / Stop Switch: Service and Repair
PUSH BUTTON IGNITION SWITCH
Removal and Installation
REMOVAL
1. Remove the cluster lid A assembly.
2. Remove the push-button ignition switch (1) from cluster lid A assembly, and then remove pawl
(A). Press push-button ignition switch (1) back to
disengage from cluster lid A assembly.
INSTALLATION
Install in the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Steering and Suspension > Sensors and Switches — Steering > Power Adjustable Steering Column Switch > Component
Information > Service and Repair

Power Adjustable Steering Column Switch: Service and Repair
TILT&TELESCOPIC; SWITCH
Removal and Installation
REMOVAL
CAUTION: When removing and installing, use shop cloths to protect parts from damage.
1. Disconnect battery negative terminal. 2. Remove the steering column mask (1).
3. Press pawls and remove tilt & telescopic switch (2) from the steering column mask (1).
INSTALLATION
Install in the reverse order of removal.
CAUTION: Clamp the harness in position.
NOTE: After installing the tilt & telescopic switch, perform additional service when removing battery
negative terminal. Refer to SE-7, «ADDITIONAL SERVICE WHEN REMOVING BATTERY
NEGATIVE TERMINAL : Special Repair Requirement». See: Body and Frame/Seats/Testing and
Inspection

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Steering and Suspension > Sensors and Switches — Steering > Power Steering Pressure Switch > Component Information >
Locations

Power Steering Pressure Switch: Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Steering and Suspension > Sensors and Switches — Steering > Steering Angle Sensor > Component Information >
Locations

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Locations > Page 1044

Steering Angle Sensor: Adjustments

Adjustment
Perform 4WAS front actuator adjustment. Refer to STC-27, «4WAS FRONT ACTUATOR
NEUTRAL POSITION ADJUSTMENT: Description».

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Locations > Page 1045

Steering Angle Sensor: Service and Repair
STEERING ANGLE SENSOR
Exploded View
DISASSEMBLY
AV-632 Exploded View
Removal and Installation
REMOVAL
1. Remove spiral cable. 2. Remove steering angle sensor from spiral cable.
INSTALLATION
Install in the reverse order of removal.

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> Testing and Inspection

Steering Column Position Sensor: Testing and Inspection

TILT & TELESCOPIC SENSOR
Description
Tilt and telescopic sensor detects the position of steering wheel and transmits signals to automatic
drive positioner control unit.
Component Function Check
Step 1
Diagnosis Procedure

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> Testing and Inspection > Page 1049

Step 1-2
Step 2 (Continued)-4

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Locations

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Locations > Page 1054

Steering Angle Sensor: Adjustments

Adjustment
Perform 4WAS front actuator adjustment. Refer to STC-27, «4WAS FRONT ACTUATOR
NEUTRAL POSITION ADJUSTMENT: Description».

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Locations > Page 1055

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Steering and Suspension > Sensors and Switches — Wheels and Tires > Tire Pressure Sensor > Component Information >
Service and Repair

Tire Pressure Sensor: Service and Repair

TRANSMITTER
WT-96 Exploded View
Removal and Installation
REMOVAL
1. Deflate tire. Unscrew transmitter retaining nut and allow transmitter to fall into tire.
2. Gently bounce tire so that transmitter falls to bottom of tire. Place on tire changing machine and
break both tire beads ensuring that the transmitter
remains at the bottom of the tire.
3. Turn tire so that valve hole is at bottom and bounce so that transmitter (1) is near valve hole.
Carefully lift tire onto turntable and position valve
hole (and transmitter) 270 degree from mounting/dismounting head (2).
4. Lubricate tire well and remove first side of the tire. Reach inside the tire and remove the
transmitter.
INSTALLATION

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Service and Repair > Page 1060

1. Put first side of tire onto rim. 2. Mount transmitter on rim and tighten nut.
CAUTION: Speed for tightening nut should be less than 15 rpm.
3. Place wheel on turntable of tire machine. Ensure that transmitter (1) is 270 degree from
mounting head (2) when second side of tire is fitted.
NOTE: Do not touch transmitter at mounting head.
4. Lubricate tire well and fit second side of tire as normal. Ensure that tire does not rotate relative to
rim. 5. Inflate tire and fit to appropriate wheel position.

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Information > Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Transmission and Drivetrain > Sensors and Switches — A/T > Shift Interlock Switch > Component Information > Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Transmission and Drivetrain > Sensors and Switches — A/T > Transmission Speed Sensor, A/T > Component Information >
Service and Repair

Transmission Speed Sensor: Service and Repair
REVOLUTION SENSOR
TM-254 Exploded View
Removal and Installation
REMOVAL
1. Disconnect the battery cable from the negative terminal. 2. Drain ATF through drain plug. 3.
Remove exhaust front tube and center muffler with power tool. 4. Remove heat insulator. 5.
Remove rear propeller shaft. 6. Remove control rod. 7. Remove exhaust mounting bracket.

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Service and Repair > Page 1072

8. Disconnect heated oxygen sensor 2 harness connectors (A).

<—: Vehicle front <—: Bolt
9. Remove heated oxygen sensor 2 harness (B) from clips (1).
10. Remove bracket (2) from transmission assembly.
11. Remove clips (1).
3: Drain plug <—: Vehicle front <—: Oil pan mounting bolt
12. Remove oil pan (2) and oil pan gasket. 13. Support A/T assembly with a transmission jack.
CAUTION: When setting transmission jack, place wooden blocks to prevent from damaging control
valve with TCM and transmission case.
14. Remove rear engine mounting member with power tool. 15. Remove engine mounting insulator
(rear).
16. Remove tightening bolts for rear extension assembly and transmission case.
<—: Self-sealing bolt <—: Bolt

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Service and Repair > Page 1073

17. Tap rear extension assembly with a soft hammer (A).

18. Remove rear extension assembly (with needle bearing) from transmission case.
19. Disconnect revolution sensor connector (A).
CAUTION: Be careful not to damage connector.
20. Disengage terminal clip (<—).
21. Remove revolution sensor (1) from transmission case.
<—: Bolt
CAUTION: ^
Do not subject it to impact by dropping or hitting it.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Transmission and Drivetrain > Sensors and Switches — A/T > Transmission Speed Sensor, A/T > Component Information >
Service and Repair > Page 1074

^ Do not disassemble.

^ Do not allow metal filings, etc. to get on the sensor’s front edge magnetic area.
^ Do not place in an area affected by magnetism.
INSTALLATION
1. Install revolution sensor (1) in transmission case. Tighten a necessary bolt for revolution sensor
with specified torque.
<—: Bolt
CAUTION: ^
Do not subject it to impact by dropping or hitting it.
^ Do not disassemble.
^ Do not allow metal filings, etc. to get on the sensor’s front edge magnetic area.
^ Do not place in an area affected by magnetism.
2. Connect revolution sensor connector (A). 3. Engage revolution sensor harness with clip (<—).

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Transmission and Drivetrain > Sensors and Switches — A/T > Transmission Speed Sensor, A/T > Component Information >
Service and Repair > Page 1075

4. Apply recommended sealant (Genuine Anaerobic Liquid Gasket or equivalent) to rear extension
assembly as shown in the figure.

A: Start and finish point shall be in the center of two bolts. B: 3 — 5 mm (0.12 — 0.20 in) Sealant
width (C): 1.0 — 2.0 mm (0.04 — 0.08 in) Sealant height (C): 0.4 — 1.0 mm (0.016 — 0.04 in)
CAUTION: Completely remove all moisture, oil and old sealant, etc. from transmission case and
rear extension assembly mounting surfaces.
5. Install rear extension assembly (with needle bearing) to transmission case.
CAUTION: Insert the tip of parking rod between the parking pole and the parking actuator support
when assembling the rear extension assembly.
6. Tighten rear extension assembly bolts to the specified torque.
1: Self-searing bolt A: Bolt
7. Install rear engine mounting member. 8. Install oil pan gasket to oil pan.
CAUTION: ^
Do not reuse oil pan gasket.
^ Install it in the direction to align hole positions.
^ Completely remove all moisture, oil and old gasket, etc. from oil pan gasket mounting surface.
9. Install oil pan (2) (with oil pan gasket) and clips (1) to transmission case.
<—: Vehicle front

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Transmission and Drivetrain > Sensors and Switches — A/T > Transmission Speed Sensor, A/T > Component Information >
Service and Repair > Page 1076

<—: Oil pan mounting bolt
CAUTION: ^
Install it so that drain plug (3) comes to the position as shown in the figure.
^ Be careful not to pinch harnesses.
^ Completely remove all moisture, oil and old gasket, etc. from oil pan mounting surface.
10. Tighten oil pan mounting bolts to the specified torque in numerical order shown in the figure
after temporarily tightening them.
Tighten necessary oil pan mounting bolts with specified torque. <—: Vehicle front
CAUTION: Do not reuse oil pan mounting bolts.
11. Install drain plug to oil pan. Tighten a necessary drain plug with specified torque.
CAUTION: Do not reuse drain plug gasket.
12. Install bracket (2) to transmission assembly.
<—: Vehicle front <—: Bolt
13. Install heated oxygen sensor 2 harness (B) to clips (1). 14. Connect heated oxygen sensor 2
harness connector (A). 15. Install exhaust mounting bracket. 16. Install control rod. 17. Install rear
propeller shaft. 18. Install heat insulator. 19. Install exhaust front tube and center muffler. 20. Pour
ATF into A/T assembly. 21. Connect the battery cable to the negative terminal.
Inspection
INSPECTION AFTER REMOVAL

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Service and Repair > Page 1077

Check foreign materials in oil pan to help determine causes of malfunction. If the ATF is very dark,
smells burned, or contains foreign particles, the frictional material (clutches, band) may need
replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause
valves, servo, and clutches to stick and can inhibit pump pressure. ^
If frictional material is detected, perform A/T fluid cooler cleaning. Refer to TM-216, «Cleaning».
See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Transmission Cooler/Service
and Repair/Cleaning
INSPECTION AFTER INSTALLATION
Check the following item after completing installation. ^
A/T fluid leakage and A/T fluid level. Refer to TM-214, «Inspection». See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Service and Repair/Procedures
^ A/T position. Refer to TM-226, «Inspection and Adjustment». See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Shifter A/T/Testing and Inspection

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Windows and Glass > Heated Glass Element Switch > Component Information > Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Windows and Glass > Power Window Switch > Component Information > Locations > Page 1085

Power Window Switch: Service and Repair
ON-VEHICLE REPAIR
POWER WINDOW MAIN SWITCH
Removal and Installation
REMOVAL
1. Remove the power window main switch finisher (2).
2. Power window main switch (1) is removed from power window main switch finisher (2) using
flat-head screw driver (A) etc.
CAUTION: Do not fold the pawl of power window main switch finisher.
NOTE: The same procedure is also performed for power window subswitch.
INSTALLATION
Install in the reverse order of removal.
NOTE: Power window main switch is exchanged or is detached it is necessary to do the
initialization procedure. Refer to PWC-4, «ADDITIONAL SERVICE WHEN REMOVING BATTERY
NEGATIVE TERMINAL : Special Repair Requirement». See: Windows and Glass/Windows/Testing
and Inspection/Programming and Relearning/Additional Service When Removing Battery Negative
Terminal

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Sensors and Switches > Sensors and Switches Wiper and Washer Systems > Washer Fluid Level Switch > Component Information > Locations

Washer Fluid Level Switch: Service and Repair
WASHER LEVEL SWITCH
Removal and Installation
The washer level switch must be replaced together with the washer tank as an assembly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Alignment > System Information >
Technical Service Bulletins > Customer Interest: > 08-046C > Apr > 11 > Steering/Tires — Pull/Drift/Steering Wheel
Off-Center

Alignment: Customer Interest Steering/Tires — Pull/Drift/Steering Wheel Off-Center
Classification: ST08-002C
Reference: ITB08-046C
Date: April 5, 2011
DIAGNOSIS OF VEHICLE PULL (DRIFT) AND STEERING WHEEL OFF CENTER
This bulletin has been amended. Changes have been made throughout the complete bulletin.
Please discard previous versions of this bulletin.
APPLIED VEHICLES: All Infititi
SERVICE INFORMATION
If a customers reports their «vehicle pulls» or the «steering wheel is off-center» use the Diagnostic
Flow Chart below and the other information in this bulletin to diagnose and correct the issue

Diagnostic Flow Chart

Road Test

Determine if the vehicle has a pull or steering wheel off-center issue that requires repair.
IMPORTANT:
^ If the vehicle has any tire issues such as:
> Tires that are different sizes (except when specified from the factory)
> Significant difference in the amount of wear between any of the tires
> Any other tire irregularity or damage to any tire
Replace the tire(s) or use known good tires from another vehicle for all road tests and diagnostics
in this bulletin.
^ Make sure tire pressure is set to the correct specification.
1. Install the following measuring tools on the vehicle:
^ Steering Wheel Offset Gauge
^ Road Crown Gauge
NOTE:
Refer to Special Tools for a description of these tools and an explanation of their use.
2. Obtain a watch with a second hand (preferably a stopwatch) to use during the road test.
3. Take the vehicle for a road test and confirm the customers concern.
^ Select a flat road where the vehicle can be driven in a straight line at a preferred speed of 60
mph.
^ During the road test make sure the vehicle is pointing straight. Don’t worry about steering wheel
position during the road test.
NOTE:
^ If you adjusted the tire pressure or changed the tires before the road test the issue may have
been resolved.
^ If there are cross winds strong enough to affect the vehicle straight line movement then diagnosis
cannot be performed.
4. Determine the vehicles issue — refer to the definitions of «Pull» and Steering Wheel «Off-center»
below.
5. When the road test is completed remove the Road Crown Gauge; leave the Steering Wheel
Off-Set Gauge in place until the Service Procedure is complete.
6. Refer to the Flow Chart for the next step.
Other Service Information

Customers may report that their vehicle’s steering wheel is «Off-center» because the steering wheel
spokes are tilted to the left or right when the vehicle continues straight ahead on a straight flat road

(see example in Figure 1).
If a vehicle’s steering wheel spokes are slightly off center while driving straight it may be the normal
result of road crown. Most roads in the United States are built with a «crown» to help rain water
drain from the road surface. The slope of the road crown varies from place to place.
Vehicles have a natural tendency to drift to the low side of the crown. The greater the slope of the
crown the faster the vehicle will drift in that direction.
Tires and vehicles are designed to counteract the effect of typical road crown but may not fully
counteract the effect of a highly crowned road.
Some freeways slope to both the left and right from the center. When driving on a freeway that
slopes in both directions a vehicle may exhibit a small amount of drift to the left when driving in the
left lane and a small amount of drift to the right when driving in the right lane.
This bulletin does not address road crown issues because they are not vehicle related, although
the customer may incorrectly perceive them to be.
Description/Definition of Steering Wheel «Off-center» Condition
The steering wheel spokes are tilted to the left or right 2 mm or more (see example in Figure 2)
when driving straight ahead on a straight flat road.
^ When driving straight on a highly crowned road the steering wheel may be turned (off-center) to
counteract the affect of the road crown. When road
testing for an off-center condition the vehicle should be driven on a straight flat road.
^ Although the vehicle does not pull in either direction the customer may perceive that the vehicle
pulls because it will respond if he or she tries to bring
the steering wheel back to center. This condition can occur if the tie rod length is uneven (not
adjusted correctly) from side to side.
Description/Definition of a Vehicle «Pull» Condition
The vehicle consistently drifts to one side while driving at a constant speed on a straight flat road.

^ A vehicle is said to pull if it completes a lane change in less than 7 seconds (with no steering
correction from the driver) when driving at 60 MPH on a
road with less than 2 degrees of road crown slope. All four wheels must pass into the other lane
during this time (7 seconds).

SPECIAL TOOLS

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Alignment > System Information >
Technical Service Bulletins > By Symptom: > 08-046C > Apr > 11 > Steering/Tires — Pull/Drift/Steering Wheel Off-Center

Alignment: By Symptom Steering/Tires — Pull/Drift/Steering Wheel Off-Center
Classification: ST08-002C
Reference: ITB08-046C
Date: April 5, 2011
DIAGNOSIS OF VEHICLE PULL (DRIFT) AND STEERING WHEEL OFF CENTER
This bulletin has been amended. Changes have been made throughout the complete bulletin.
Please discard previous versions of this bulletin.
APPLIED VEHICLES: All Infititi
SERVICE INFORMATION
If a customers reports their «vehicle pulls» or the «steering wheel is off-center» use the Diagnostic
Flow Chart below and the other information in this bulletin to diagnose and correct the issue

Diagnostic Flow Chart

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Page 1109

Road Test

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Page 1110

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Page 1111

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Page 1112

SPECIAL TOOLS

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Technical Service Bulletins > All Technical Service Bulletins for Alignment: > 04-021C > Apr > 11 > Steering/Suspension Wheel Alignment Info.

Technical Service Bulletin # 04-021C Date: 110406

Steering/Suspension — Wheel Alignment Info.
Classification: WT04-005C
Reference: ITB04-021C
Date: April 6, 2011
WHEEL ALIGNMENT INFORMATION
This bulletin has been amended to correct some typographical errors in SERVICE INFORMATION.
No other changes have been made. Discard all previous versions of this bulletin.
APPLIED VEHICLES: All Infiniti
Warranty Claim Information:
In order to properly document any warranty alignment claim the following item MUST be attached
to the Repair Order:
^ A copy of the alignment machine printout showing the BEFORE and AFTER alignment readings.
IMPORTANT:
If you do not attach the above item to the Repair Order the claim may be denied (rejected or
charged back).
ALSO: A copy of the yearly alignment machine calibration certification must be held on file in the
Service Dept.
Service Information
SERVICE INFORMATION
^ When performing a wheel alignment it is important that you read and follow all of the instructions
supplied with your alignment equipment.
^ The information in this bulletin is not intended to be complete wheel alignment instructions.
^ Use the information in this bulletin as a supplement to the instructions for your equipment.
General Information and Recommendations
1. Four-Wheel Thrust Alignment should always be performed.
^ This type of alignment is recommended for all Infiniti vehicles.
^ The four-wheel thrust process ensures that the vehicle is properly aligned and helps ensure
proper «centering» of the steering wheel.
2. Use the right alignment machine.
^ You must use a quality alignment machine that will give accurate results when performing
alignment checks.
^ Refer to the Infiniti TECH-MATE Service Equipment Catalog for recommended alignment
equipment.
^ The alignment rack itself should be capable of accepting any Infiniti vehicle.
^ The rack should be checked to ensure that it is level.

3. Make sure the alignment machine is properly calibrated.
^ Your alignment equipment should be regularly calibrated in order to give accurate readings.
^ If any instrument that is part of the alignment machine is dropped or damaged calibration should
be checked immediately.
^ Check with the manufacturer of your specific equipment for their recommended
service/calibration schedule.
NOTE:

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In order to properly document any warranty alignment claim the following item MUST be attached
to the Repair Order:
A copy of the alignment machine printout showing the BEFORE and AFTER alignment readings.
IMPORTANT:
If you do not attach the above item to the Repair Order the claim may be denied (rejected or
charged back).
ALSO: A copy of the yearly alignment machine calibration certification must be held on file in the
Service Dept.
4. Make sure the «turn plates» and «slide plates» are in good working order:
^ The surface of the front turn plates must be level with (the same height as) the rack surface.
If height is not the same; have the equipment repaired before performing any alignments.

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^ Make sure the front turn plates:

> Do not wobble (no up/down movement).
> Operate (slide and turn) smoothly in all directions.
If there is any issue with the turn plate operation — have the equipment repaired before performing
any alignments.
^ Make sure the rear slide plates:
> Do not wobble (no up/down movement).
> Operate (slide) smoothly in all directions.

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If there is any issue with the slide plate operation — have the equipment repaired before performing
any alignments.
5. Make sure the lock pins for the front «turn plates» and rear «slide plates» are in place.
NOTE:
Lock pins should remain in place until caster sweep.
The Alignment Process
IMPORTANT:
Use only the alignment specifications listed in the appropriate Service Manual when adjusting the
alignment.
1. Make sure the vehicle is straight on the alignment rack.
^ Vehicle must be straight (in line) with the alignment rack before entering the rack as shown in
Figure 4.
^ Do not straighten the vehicle while on the rack (see Figure 5).
^ If the vehicle needs to be straightened exit the alignment rack straighten the vehicle and then
re-enter the rack.
^ Once the vehicle is straight on the rack do not turn/center the steering wheel-keep the front
wheels straight.
2. Position vehicle on the front turn plates as follows:

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^ Stop vehicle just behind the turn plates.

^ Center the turn plates to the tires.

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^ Move the vehicle onto the turn plates by turning/pushing the rear wheel.

DO NOT push/pull on the vehicle body.
^ Center the front wheels on the turn plates.

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^ Chock the left rear wheel.
Preliminary Checks:
3. Perform pre-alignment checks.
^ Tire condition (wear partial wear flaws etc.)
^ Road wheel condition (damage and deformation)
^ Tire pressure
^ Inspect for visible damage to any suspension components
^ Wheel bearing axial play
^ Ball joints of suspension arms

^ Shock absorber operation and visual check for oil leakage
^ Condition of axle and suspension (check for bushing cracks and slack)
^ Vehicle weight
> Empty — no cargo luggage or passengers
> Fuel level is full
> Engine coolant and lubricating oils at specified levels
> Spare tire, jack hand tools and floor mats in designated positions
NOTE:
Refer to the appropriate Service Manual for information about any of the above checks and
inspections.
4. Check the target mounts.
^ If there is any visual damage (bent worn cracked etc) have the equipment repaired before
performing any alignments.

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^ Make sure the target mounts are properly adjusted and configured (see Figure 11).
NOTE:
The target mount example shown in Figure 11 is for Hunter «camera type» alignment machines.
Follow the operation manual for your specific equipment.

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5. Make sure the targets are mounted correctly.
^ Mount the top claws first.
^ Claws must be flush against the wheel as shown in Figure 13.

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^ Target must be flush against the center support as shown in Figure 14.
^ Make sure the targets are positioned with the arrow UP or level.
IMPORTANT:
Once you have set the target position DO NOT reset it at anytime during the alignment process.

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6. Begin the alignment procedure.
^ Follow all of the instructions for your particular equipment.
^ Refer to the Service Manual for alignment specifications.
If your equipment requires «rolling compensation». follow these additional tips:

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^ DO NOT push or pull on the vehicle body.

IMPORTANT:
After performing «rolling compensation», DO NOT reset the target position.
When performing «caster sweep». follow these tips:
^ Apply the brakes as shown.
^ Start the engine to allow brake boost.
^ Turn the engine OFF.

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^ Remove all lock pins — front «turn plates» and rear «slide plates».

^ Make sure the bridge plate will not interfere with movement of the turn plate.
Put the bridge plate in the down position.
^ Perform caster sweep by turning the steering wheel from outside the vehicle.

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^ DO NOT push/pull on the tire to perform the caster sweep.
7. Make sure the steering wheel is centered when performing toe-in measurements and
adjustments.
NOTE:
If you are using a Hunter alignment machine equipped with the WinToe-(R) Alignment Adjustment
System:
^ There is no need to lock the steering wheel. The WinToe(R) system is not affected by steering
system movement during the adjustment process.
^ Bumping the tire or re-centering the steering wheel when adjusting «near frozen» tie rods is not
necessary. This makes the adjustment process faster
and easier.
^ WinToe(R) eliminates the effect of lash in the steering system.

If you are using a John Bean alignment machine equipped with EZ Toe:
^ There is no need to lock the steering wheel. The EZ Toe system is not affected by steering
system movement during the adjustment process.
^ This software routine is an improved method of setting front toe making it easier to obtain a
centered steering wheel.
^ With EZ Toe it is possible to adjust toe with the steering wheel turned at any angle left or right.
This is helpful when setting toe on engine wall
mounted rack and pinion units.
IMPORTANT:
If during the alignment process the vehicle was lifted off of the rack; after lowering, make sure to
jounce (bounce) the vehicle before confirming adjustments are correct.
After you have checked and adjusted vehicle alignment
8. Print the BEFORE and AFTER measurements and attach them to the Repair Order.
9. Road test the vehicle to make sure the steering wheel is «centered» when driving on a straight
flat road.

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Technical Service Bulletins > All Technical Service Bulletins for Alignment: > 08-046C > Apr > 11 > Steering/Tires Pull/Drift/Steering Wheel Off-Center

Alignment: All Technical Service Bulletins Steering/Tires — Pull/Drift/Steering Wheel Off-Center
Classification: ST08-002C
Reference: ITB08-046C
Date: April 5, 2011
DIAGNOSIS OF VEHICLE PULL (DRIFT) AND STEERING WHEEL OFF CENTER
This bulletin has been amended. Changes have been made throughout the complete bulletin.
Please discard previous versions of this bulletin.
APPLIED VEHICLES: All Infititi
SERVICE INFORMATION
If a customers reports their «vehicle pulls» or the «steering wheel is off-center» use the Diagnostic
Flow Chart below and the other information in this bulletin to diagnose and correct the issue

Diagnostic Flow Chart

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Road Test

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SPECIAL TOOLS

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Technical Service Bulletins > All Other Service Bulletins for Alignment: > 04-021C > Apr > 11 > Steering/Suspension Wheel Alignment Info.

Technical Service Bulletin # 04-021C Date: 110406

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Technical Service Bulletins > All Other Service Bulletins for Alignment: > 04-021C > Apr > 11 > Steering/Suspension Wheel Alignment Info. > Page 1145

^ Make sure the front turn plates:

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^ Stop vehicle just behind the turn plates.

^ Center the turn plates to the tires.

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^ Move the vehicle onto the turn plates by turning/pushing the rear wheel.

DO NOT push/pull on the vehicle body.
^ Center the front wheels on the turn plates.

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5. Make sure the targets are mounted correctly.
^ Mount the top claws first.
^ Claws must be flush against the wheel as shown in Figure 13.

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^ DO NOT push or pull on the vehicle body.

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^ Remove all lock pins — front «turn plates» and rear «slide plates».

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^ Make sure the front turn plates:

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^ Stop vehicle just behind the turn plates.

^ Center the turn plates to the tires.

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^ Move the vehicle onto the turn plates by turning/pushing the rear wheel.

DO NOT push/pull on the vehicle body.
^ Center the front wheels on the turn plates.

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5. Make sure the targets are mounted correctly.
^ Mount the top claws first.
^ Claws must be flush against the wheel as shown in Figure 13.

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^ DO NOT push or pull on the vehicle body.

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^ Remove all lock pins — front «turn plates» and rear «slide plates».

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Alignment > System Information >
Specifications > Front Suspension

Alignment: Specifications Front Suspension

Alignment: Specifications Rear Suspension

Alignment: Specifications Ride Height (Unladen*)
Front
Rear

Alignment: Testing and Inspection Front Suspension
Description
CAUTION: ^
Camber, caster, kingpin inclination angles cannot be adjusted.
^ If camber, caster, or kingpin inclination angle is outside the standard, check front suspension
parts for wear and damage. Replace suspect parts if a malfunction is detected.
^ Kingpin inclination angle is reference value, no inspection is required.
^ Measure wheel alignment under unladen conditions.
NOTE: «Unladen conditions» means that fuel, engine coolant, and lubricant are full. Spare tire, jack,
hand tools and mats are in designated positions.
General Information and Recommendations
^ A four-wheel thrust alignment should be performed.
— This type of alignment is recommended for any NISSAN/INFINITI vehicle.
— The four-wheel «thrust» process helps ensure that the vehicle is properly aligned and the steering
wheel is centered.
— The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
— The rack should be checked to ensure that it is level.
^ Make sure the machine is properly calibrated.
— Your alignment equipment should be regularly calibrated in order to give correct information.
— Check with the manufacturer of your specific equipment for their recommended
Service/Calibration Schedule.
Alignment Process
IMPORTANT: Use only the alignment specifications listed in this Service Manual.
^ When displaying the alignment settings, many alignment machines use «indicators»: (Green/red,
plus or minus, Go/No Go). Do not use these indicators.
— The alignment specifications programmed into your machine that operate these indicators may
not be correct.
— This may result in an ERROR.
^ Some newer alignment machines are equipped with an «optional Rolling Compensation» method
to «compensate» the sensors (alignment targets or head units). Do not use this «Rolling
Compensation» method.
— Use the «Jacking Compensation Method». After installing the alignment targets or head units,
raise the vehicle and rotate the wheels 1/2 turn both ways.
— See Instructions in the alignment machine you’re using for more information on this.
Preliminary Check

Check the following: ^
Tires for improper air pressure and wear.
^ Road wheels for runout. Refer to WT-92, «Inspection». See: Wheels and Tires/Wheels/Testing
and Inspection
^ Wheel bearing axial end play. Refer to FAX-4, «Inspection». See: Wheels and Tires/Wheel
Hub/Testing and Inspection/Front Axle
^ Transverse link or upper link ball joint axial end play. Refer to FSU-25, «Ball Joint». See:
Specifications/Mechanical Specifications/Suspension/System Specifications/Front Suspension/Ball
Joint
^ Shock absorber operation.
^ Each mounting part of axle and suspension for looseness and deformation.
^ Each of suspension member, shock absorber, upper link and transverse link for cracks,
deformation and other damage.
^ Vehicle height (posture).

Alignment: Testing and Inspection Rear Suspension
Description
^ Measure wheel alignment under unladen conditions.
NOTE: «Unladen conditions» means that fuel, engine coolant, and lubricant are full. Spare tire, jack,
hand tools and mats are in designated positions.
General Information and Recommendations
^ A four-wheel thrust alignment should be performed.
— This type of alignment is recommended for any NISSAN/INFINITI vehicle.
— The four-wheel «thrust» process helps ensure that the vehicle is properly aligned and the steering
wheel is centered.
— The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
— The rack should be checked to ensure that it is level.
^ Make sure the machine is properly calibrated.
— Your alignment equipment should be regularly calibrated in order to give correct information.
— Check with the manufacturer of your specific equipment for their recommended
Service/Calibration Schedule.
Alignment Process
IMPORTANT: Use only the alignment specifications listed in this Service Manual.
^ When displaying the alignment settings, many alignment machines use «indicators»: (Green/red,
plus or minus, Go/No Go). Do not use these indicators.
— The alignment specifications programmed into your machine that operate these indicators may
not be correct.

— This may result in an ERROR.
^ Some newer alignment machines are equipped with an optional «Rolling Compensation» method
to «compensate» the sensors (alignment targets or head units). Do not use this «Rolling
Compensation» method.
— Use the «Jacking Compensation Method». After installing the alignment targets or head units,
raise the vehicle and rotate the wheels 1/2 turn both ways.
— See Instructions in the alignment machine you’re using for more information on this.
Preliminary Check
Check the following: ^
Tires for improper air pressure and wear.
^ Road wheels for runout. Refer to WT-92, «Inspection». See: Wheels and Tires/Wheels/Testing
and Inspection
^ Wheel bearing axial end play. Refer to RAX-5, «Inspection». See: Wheels and Tires/Wheel
Hub/Testing and Inspection/Rear Axle
^ Ball joint axial end play of suspension arm. Refer to RSU-28, «Ball Joint». See:
Specifications/Mechanical Specifications/Suspension/System Specifications/Rear Suspension/Ball
Joint
^ Shock absorber operation.
^ Each mounting point of axle and suspension for looseness and deformation.
^ Each of front lower link, rear lower link, radius rod, rear suspension member, suspension arm and
shock absorber for cracks, deformation, and other damage.
^ Vehicle height (posture).
ADJUSTMENT
Camber
If outside the standard value, adjust with adjusting bolt (1) in front lower link (2). Standard

Camber: Refer to RSU-28, «Wheel Alignment». See: Specifications/Rear Suspension/Wheel
Alignment
CAUTION: After adjusting camber, be sure to check toe-in.
Toe-In
^ If toe-in is not within the specification, adjust with adjusting bolt (1) in rear lower link (2). Standard
Toe-in: Refer to RSU-28, «Wheel Alignment». See: Specifications/Rear Suspension/Wheel
Alignment
CAUTION: Be sure to adjust equally on RH and LH side with adjusting bolt.
— If toe-in is not still within the specification, inspect and replace any damaged or worn suspension
parts.

Alignment: Service and Repair Front Suspension
Description
CAUTION: ^
Camber, caster, kingpin inclination angles cannot be adjusted.
^ If camber, caster, or kingpin inclination angle is outside the standard, check front suspension
parts for wear and damage. Replace suspect parts if a malfunction is detected.
^ Kingpin inclination angle is reference value, no inspection is required.
^ Measure wheel alignment under unladen conditions.
NOTE: «Unladen conditions» means that fuel, engine coolant, and lubricant are full. Spare tire, jack,
hand tools and mats are in designated positions.
General Information and Recommendations
^ A four-wheel thrust alignment should be performed.
— This type of alignment is recommended for any NISSAN/INFINITI vehicle.
— The four-wheel «thrust» process helps ensure that the vehicle is properly aligned and the steering
wheel is centered.
— The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
— The rack should be checked to ensure that it is level.
^ Make sure the machine is properly calibrated.
— Your alignment equipment should be regularly calibrated in order to give correct information.
— Check with the manufacturer of your specific equipment for their recommended
Service/Calibration Schedule.
Alignment Process
IMPORTANT: Use only the alignment specifications listed in this Service Manual.
^ When displaying the alignment settings, many alignment machines use «indicators»: (Green/red,
plus or minus, Go/No Go). Do not use these indicators.
— The alignment specifications programmed into your machine that operate these indicators may
not be correct.
— This may result in an ERROR.
^ Some newer alignment machines are equipped with an «optional Rolling Compensation» method
to «compensate» the sensors (alignment targets or head units). Do not use this «Rolling
Compensation» method.
— Use the «Jacking Compensation Method». After installing the alignment targets or head units,
raise the vehicle and rotate the wheels 1/2 turn both ways.
— See Instructions in the alignment machine you’re using for more information on this.
Preliminary Check

Alignment: Service and Repair Rear Suspension
Inspection and Adjustment
MOUNTING INSPECTION
Make sure the mounting conditions (looseness, backlash) of each component and component
conditions (wear, damage) are normal.
BALL JOINT AXIAL END PLAY
Measure axial end play by placing and moving up/down with an iron bar or equivalent between
suspension arm and axle assembly. Standard End play: Refer to RSU-28, «Ball Joint». See:
Specifications/Mechanical Specifications/Suspension/System Specifications/Rear Suspension/Ball
Joint
CAUTION: Be careful not to damage ball joint boot.
SHOCK ABSORBER
Check for oil leakage, damage and replace if malfunction is detected.
Wheel Alignment Inspection
Description
^ Measure wheel alignment under unladen conditions.
NOTE: «Unladen conditions» means that fuel, engine coolant, and lubricant are full. Spare tire, jack,
hand tools and mats are in designated positions.
General Information and Recommendations
^ A four-wheel thrust alignment should be performed.
— This type of alignment is recommended for any NISSAN/INFINITI vehicle.
— The four-wheel «thrust» process helps ensure that the vehicle is properly aligned and the steering
wheel is centered.
— The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
— The rack should be checked to ensure that it is level.
^ Make sure the machine is properly calibrated.
— Your alignment equipment should be regularly calibrated in order to give correct information.
— Check with the manufacturer of your specific equipment for their recommended
Service/Calibration Schedule.
Alignment Process
IMPORTANT: Use only the alignment specifications listed in this Service Manual.
^ When displaying the alignment settings, many alignment machines use «indicators»: (Green/red,
plus or minus, Go/No Go). Do not use these indicators.
— The alignment specifications programmed into your machine that operate these indicators may
not be correct.

Camber
If outside the standard value, adjust with adjusting bolt (1) in front lower link (2). Standard Camber:
Refer to RSU-28, «Wheel Alignment». See: Specifications/Rear Suspension/Wheel Alignment

CAUTION: After adjusting camber, be sure to check toe-in.
Toe-In
^ If toe-in is not within the specification, adjust with adjusting bolt (1) in rear lower link (2). Standard
Toe-in: Refer to RSU-28, «Wheel Alignment». See: Specifications/Rear Suspension/Wheel
Alignment
CAUTION: Be sure to adjust equally on RH and LH side with adjusting bolt.
— If toe-in is not still within the specification, inspect and replace any damaged or worn suspension
parts.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Fuel Pressure > System Information > Specifications

Fuel Pressure: Specifications
Fuel Pressure
At idling: Approximately 350 kPa (3.57 kg/sq.cm, 51 psi)

Fuel Pressure: Testing and Inspection
FUEL PRESSURE CHECK
CAUTION: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
— Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because CV36 models do not have fuel return system.
— Use Fuel Pressure Gauge Kit (J-44321) to check fuel pressure.
1. Release fuel pressure to zero.
2. Install the inline fuel quick disconnected fitting (A) between fuel damper (1) and injector tube. 3.
Connect the fuel pressure test gauge (quick connector adapter hose) (B) to the inline fuel quick
disconnected fitting. 4. Turn ignition switch ON and check for fuel leakage. 5. Start engine and
check for fuel leakage. 6. Read the indication of fuel pressure gauge.
At idling: Approximately 350 kPa (3.57 kg/sq.cm, 51 psi)
7. If result is unsatisfactory, check fuel hoses and fuel tubes for clogging.
If OK, Replace «fuel filter and fuel pump assembly». If NG, Repair or replace.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Idle Speed > System Information > Specifications > Page 1197

Idle Speed: Testing and Inspection
IDLE SPEED
IDLE SPEED: Description
This describes how to check the idle speed. For the actual procedure, follow the instructions in
«BASIC INSPECTION».
IDLE SPEED: Special Repair Requirement
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Air Cleaner Housing > Air Filter Element > Component Information > Service and Repair

Air Filter Element: Service and Repair
AIR CLEANER FILTER
Removal and Installation
REMOVAL
1. Unhook clips (1).
2: Air cleaner case 3: Holder
2. Remove air cleaner filter (1) from air cleaner case (2).
3: Holder 4: Clip

INSTALLATION
Note the following, and install in the reverse order of removal. ^
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.

Fuel Pressure Release: Service and Repair
ON-VEHICLE MAINTENANCE
FUEL PRESSURE
Inspection
FUEL PRESSURE RELEASE
With CONSULT-III
1. Turn ignition switch ON. 2. Perform «FUEL PRESSURE RELEASE» in «WORK SUPPORT»
mode with CONSULT-III. 3. Start engine. 4. After engine stalls, crank it two or three times to
release all fuel pressure. 5. Turn ignition switch OFF.
Without CONSULT-III
1. Remove fuel pump fuse (1) located in IPDM E/R (2). 2. Start engine. 3. After engine stalls, crank
it two or three times to release all fuel pressure. 4. Turn ignition switch OFF. 5. Reinstall fuel pump
fuse after servicing fuel system.

Firing Order: Specifications
Firing order: 1 — 2 — 3 — 4 — 5 — 6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Ignition Timing > Timing Marks and Indicators > System Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Specifications

Spark Plug: Specifications
Spark Plug
Make ………………………………………………………………………………………………………………………………….
…………………………………………………………… DENSO Standard Type ………………………………………….
………………………………………………………………………………………………………………………………..
FXE24HR11 Gap(Nominal) …………………………………………………………………………………………………..
…………………………………………………………………………… 1.1(0.043)
Tourque ……………………………………………………………………………………………………………………………..
………………………………………….. 19.6 NMs (14 Ftlbs)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Specifications > Page 1216

Spark Plug: Application and ID
Spark Plug
Make ………………………………………………………………………………………………………………………………….
…………………………………………………………… DENSO Standard Type ………………………………………….
………………………………………………………………………………………………………………………………..
FXE24HR11 Gap(Nominal) …………………………………………………………………………………………………..
…………………………………………………………………………… 1.1(0.043)
Tourque ……………………………………………………………………………………………………………………………..
………………………………………….. 19.6 NMs (14 Ftlbs)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Service and Repair > Spark Plug

Spark Plug: Service and Repair Spark Plug
Removal and Installation
EM-15 Exploded View
REMOVAL
1. Remove engine cover with power tool. 2. Remove air cleaner case and air duct (RH and LH). 3.
Remove electric throttle control actuator. 4. Remove ignition coil.
5. Remove spark plug with a spark plug wrench (commercial service tool).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1219

a: 14 mm (0.55 in)
INSTALLATION
Installation is the reverse order of removal.
Inspection
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.

CAUTION:
^ Never drop or shock spark plug.
^ Never use a wire brush for cleaning.
^ If plug tip is covered with carbon, use spark plug cleaner to clean.
Cleaner air pressure: Less than 588 kPa (6 kg/cm2, 85 psi) Cleaning time: Less than 20 seconds
^ Check and adjustment of plug gap is not required between change intervals.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1220

Spark Plug: Service and Repair Ignition Coil, Spark Plug and Rocker Cover
IGNITION COIL, SPARK PLUG AND ROCKER COVER
EM-45 Exploded View
Removal and Installation
REMOVAL
1. Remove the following parts:

^ Engine cover
^ Air cleaner case and air duct (RH and LH)
^ Intake manifold collector
2. Disconnect PCV hose from rocker cover. 3. Remove PCV valve and O-ring from rocker cover, if
necessary. 4. Remove oil filler cap from rocker cover, if necessary. 5. Remove ignition coil.
CAUTION: Never shock it.
6. Remove harness clips on the rocker cover.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1221

7. Loosen bolts in reverse order shown in the figure.
A: Bank 1 B: Bank 2 <—: Engine front
8. Remove rocker cover gasket from rocker cover. 9. Use scraper to remove all traces of liquid
gasket from cylinder head and VVEL ladder assembly.
CAUTION: Never scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
1. Apply liquid gasket to the position shown in the figure with the following procedure:
2: Actuator bracket (rear) 3: VVEL actuator sub assembly A: Liquid gasket application point b: 4
mm (0.16 in) c: 2.5 — 3.5 mm (0.098 — 0.138 in) d: 5 mm (0.20 in)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1222

F: View C g: 10 mm (0.39 in) i: End surface of VVEL ladder assembly <—: Engine front
a. Refer to figure (E) to apply liquid gasket to joint part of VVEL ladder assembly (1) and cylinder
head. b. Refer to figure to apply liquid gasket in 90° to figure. Use Genuine RTV Silicone Sealant or
equivalent.
2. Install rocker cover gasket to rocker cover. 3. Install rocker cover.
^ Check that rocker cover gasket does not drop from the installation groove of rocker cover.
4. Tighten bolts in two steps separately in numerical order as shown in the figure.
A: Bank 1 B: Bank 2 <—: Engine front 1st step: 2.0 Nm (0.2 kg-m, 18 in-lb) 2nd step: 8.3 Nm (0.85
kg-m, 73 in-lb)
5. Install in the reverse order of removal after this step.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Compression Check > System Information > Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Compression Check > System Information > Specifications > Page 1226

Compression Check: Testing and Inspection
COMPRESSION PRESSURE
Inspection
1. Warm up engine thoroughly. Then, stop it. 2. Release fuel pressure. Refer to EC-601,
«Inspection».
3. Disconnect fuel pump fuse (1) from IPDM E/R (2) to avoid fuel injection during measurement. 4.
Remove engine cover with power tool. 5. Remove ignition coil and spark plug from each cylinder.
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression gauge with an adapter (commercial service tool) onto spark plug hole.
^ Use the adapter whose picking up end inserted to spark plug hole is smaller than 20 mm (0.79 in)
in diameter. Otherwise, it may be caught by cylinder head during removal. a: 20 mm (0.79 in)
8. With accelerator pedal fully depressed, turn ignition switch to «START» for cranking. When the
gauge pointer stabilizes, read the compression
pressure and the engine rpm. Perform these steps to check each cylinder.
Compression pressure: Refer to EM-138, «General Specification». See: Engine, Cooling and
Exhaust/Engine/Specifications/Service Limits and General Specifications/General Specifications
CAUTION: ^
Measure a six-cylinder under the same conditions since a measurement depends on measurement
conditions (engine water temperature, etc.).
^ Always use a fully changed battery to obtain the specified engine speed.
^ If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
^ If compression pressure is below the minimum value, check valve clearances and parts
associated with combustion chamber (valve, valve seat,

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Compression Check > System Information > Specifications > Page 1227

piston, piston ring, cylinder bore, cylinder head, cylinder head gasket). After checking, measure
compression pressure again.
^ If a cylinder has low compression pressure, pour a small amount of engine oil into the spark plug
hole of the cylinder to re-check it for compression. ^
If the added engine oil improves the compression, piston rings may be worn out or damaged.
Check piston rings and replace if necessary.
^ If the compression pressure remains at low level despite the addition of engine oil, valves may be
malfunctioning. Check valves for damage. Replace valve or valve seat accordingly.
^ If two adjacent cylinders have respectively low compression pressure and their compression
remains low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case,
replace cylinder head gaskets.
9. After inspection is completed, install removed parts.
10. Start the engine, and check that the engine runs smoothly. 11. Perform trouble diagnosis. If
DTC appears, erase it. Refer to EC-132, «Description».

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Valve Lifter

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Valve Lifter > Page 1232

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Valve Lifter > Page 1233

Valve Clearance: Specifications Available Valve Lifter

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Page 1234

Valve Clearance: Testing and Inspection
INSPECTION
Check valve clearance if applicable to the following cases:
Intake side:
^ At the removal and installation of VVEL ladder assembly or valve-related parts, or at the
occurrence of malfunction (poor starting, idle malfunction, unusual noise) due to aged deterioration
in valve clearance.
CAUTION: Valve clearance check on the intake side is not required after replacing the VVEL ladder
assembly & cylinder head assembly with a new one. (install new VVEL ladder assembly & cylinder
head assembly in factory shipped condition because it is factory-adjusted and inspected.)
NOTE: VVEL ladder assembly cannot be replaced as a single part, because it is machined
together with cylinder head assembly.
Exhaust side:

^ At the removal, installation, and replacement of camshaft (EXH) or valve-related parts, or at the
occurrence of malfunction (poor starting, idle malfunction, unusual noise) due to aged deterioration
in valve clearance.
1. Remove rocker covers (bank 1 and bank 2). 2. Measure the valve clearance as follows:
^ Use the feeler gauge (commercial service tool) of curved-tip. This allows the feeler gauge to
access the clearance between camshaft and valve lifter with ease. Valve clearance: Refer to
EM-139, «Camshaft». See: Specifications/Valve Clearance
NOTE: Be sure to note the following points when measuring valve clearance on the intake side.
^ Before measuring, check that the position of drive shaft nose is within the angle shown in the
figure. A: Bank 1 B: Feeler gauge (commercial service tool) c: 45° (drive shaft nose angle) D: View
<—: Insertion direction of feeler gauge on the bank 1 <—: Insertion direction of feeler gauge on the
bank 2
^ Refer to the illustration for the insertion direction of the feeler gauge since the direction depends
on the bank.
a. Set No. 1 cylinder at TDC of its compression stroke.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Page 1235

^ Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing
indicator. <—: Timing mark (grooved line without color)
^ Check that exhaust cam nose on No. 1 cylinder (engine front side of bank 1) is located as shown
in the figure.
^ If not, turn crankshaft one revolution (360 degrees) and align as shown in the figure. 1: Camshaft
(EXH) (bank 1) <—: Engine front
^ By referring to the figure, measure the valve clearances at locations marked «x» as shown in the
table below (locations indicated in the figure).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Page 1236

<—: Engine front
^ No. 1 cylinder at compression TDC
b. Rotate crankshaft 240° clockwise (when viewed from engine front) to align No. 3 cylinder at TDC
its compression stroke.
NOTE:
Mark a position 240° (b) from a corner of the hexagonal part of crankshaft pulley mounting bolt as
shown in the figure. Use the hexagonal part as a guide.
1: Crankshaft pulley A: Paint mark
^ By referring to the figure, measure the valve clearances at locations marked «x» as shown in the
table below (locations indicated in the figure). <—: Engine front
^ No. 3 cylinder at compression TDC
c. Rotate crankshaft 240° clockwise (when viewed from engine front) to align No. 5 cylinder at TDC
of compression stroke.
NOTE:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Page 1237

Mark a position 240° (b) from a corner of the hexagonal part of crankshaft pulley mounting bolt as
shown in the figure. Use the hexagonal part as a guide.
1: Crankshaft pulley A: Paint mark
^ By referring to the figure, measure the valve clearances at locations marked «x» as shown in the
table below (locations indicated in the figure). <—: Engine front
^ No. 5 cylinder at compression TDC
3. Perform adjustment or replacement if the measured value is out of the standard.
^ Refer to «CAMSHAFT (EXH) VALVE CLEARANCE ADJUSTMENT». (Exhaust side)
^ Replace VVEL ladder assembly & cylinder head assembly.
CAUTION: Never adjust valve clearance on the intake side.
NOTE: Since the valve lifter (INT) cannot be replaced by the piece, VVEL ladder assembly &
cylinder head assembly replacement are required.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Tune-up and Engine Performance
Checks > Valve Clearance > System Information > Specifications > Page 1238

Valve Clearance: Adjustments
CAMSHAFT (EXH) VALVE CLEARANCE ADJUSTMENT
^ Perform adjustment depending on selected head thickness of valve lifter (EXH).
CAUTION: Never adjust valve clearance on the intake side.

1. Measure the valve clearance. Refer to «INSPECTION». 2. Remove VVEL ladder assembly and
camshaft (EXH).
CAUTION: Never loosen adjusting bolts and mounting bolts (black color) of VVEL ladder assembly.
3. Remove valve lifter (EXH) at the locations that are out of the standard.
4. Measure the center thickness of the removed valve lifters (EXH) with a micrometer (A). 5. Use
the equation below to calculate valve lifter (EXH) thickness for replacement.
Valve lifter (EXH) thickness calculation: t = t1 + (C1 — C2)
t = Valve lifter (EXH) thickness to be replaced t1 = Removed valve lifter (EXH) thickness C1 =
Measured valve clearance C2 = Standard valve clearance:
Exhaust: 0.33 mm (0.013 in)
^ Thickness of new valve lifter (EXH) can be identified by stamp marks on the reverse side (inside
the cylinder). Stamp mark 788T indicates 7.88 mm (0.3102 in) in thickness. A: Stamp B: Thickness
of valve lifter (EXH)
Available thickness of valve lifter (EXH): 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in)
in steps of 0.02 mm (0.0008 in) (when manufactured at factory).
6. Install selected valve lifter (EXH). 7. Install VVEL ladder assembly and camshaft (EXH). 8.
Manually turn crankshaft pulley a few turns. 9. Check that the valve clearances for cold engine are
within the specifications by referring to the specified values. Refer to EM-17, «Inspection and
Adjustment». See: Testing and Inspection
10. Install all removed parts in the reverse order of removal. 11. Warm up the engine, and check for
unusual noise and vibration.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Timing Component Alignment Marks
> Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Drive Belt > Component Information
> Technical Service Bulletins > Engine — Drive Belt Noise Diagnostics

Drive Belt: Technical Service Bulletins Engine — Drive Belt Noise Diagnostics
Classification: EM09-014
Reference: ITB10-005
Date: January 12, 2010
DRIVE BELT SYSTEM NOISE DIAGNOSIS
APPLIED VEHICLES: All Infiniti
IF YOU CONFIRM
There is noise coming from the drive belt(s) or drive belt pulley(s)
ACTION
Use the flow chart in this bulletin to help diagnose and identify the source / cause of the noise.
CLAIMS INFORMATION
Refer to the current Infiniti Warranty Flat Rate Manual and use the indicated claims coding for any
repairs performed.

DRIVE BELT / PULLEY NOISE DIAGNOSIS FLOW CHART

Auto Tensioner Inspection (if equipped)
1. With the engine running at idle and the AC turned ON observe the pulley angular (side to side)
movement (see Example 1):
^ See above table for maximum movement specification.
^ Visual comparison of movement with a known good vehicle is recommended.
2. With the engine running at idle and the AC turned ON observe the pulley axial/lateral (back and
forth) movement (see Example 2):
^ Maximum movement specification is 1 mm.
^ Visual comparison of movement with a known good vehicle is recommended.

Idler Pulley / Manual Tensioner Inspection (if equipped)

No more than 1 mm of pulley rock should be visible.
Alternator One-way Clutch Pulley Inspection
CAUTION:
Be careful not to damage the rotor.
NOTE:
The following steps can be done while the alternator is installed on the vehicle if the drive belt is
removed and the alternator electrical connectors are disconnected.
1. Secure the rotor using a medium size screwdriver and a rolled shop towel.
2. Turn the pulley clockwise when viewed from the front.
^ Pulley should be locked.
^ If it rotates in both directions replace the alternator.
3. Turn the pulley counterclockwise when viewed from the front.
^ Pulley should turn with some dragging
^ If it locks or has unusual resistance replace the alternator.

Disclaimer

Drive Belt: Testing and Inspection
Checking
WARNING: Be sure to perform the this step when engine is stopped.
^ Check that the indicator (C) (notch on fixed side) of drive belt auto-tensioner is within the possible
use range (A).
NOTE: ^
Check the drive belt auto-tensioner indication when the engine is cold.
^ When new drive belt is installed, the indicator (notch on fixed side) should be within the range (B),
in the figure.
^ Visually check the entire drive belt for wear, damage or crack.
^ If the indicator (notch on fixed side) is out of the possible use range or belt is damaged, replace
drive belt.

Drive Belt: Service and Repair
Removal and Installation
EM-12 Exploded View

REMOVAL
1. Remove engine undercover with power tool.
2. While securely holding the square hole (A) in pulley center of auto tensioner (1) with a spinner
handle, move spinner handle in the direction of
arrow (loosening direction of drive belt).
CAUTION: Never place hand in a location where pinching may occur if the holding tool accidentally
comes off.
<—: Loosening direction of drive belt
3. Under the above condition, insert a metallic bar of approximately 6 mm (0.24 in) in diameter
[hexagonal wrench (C) shown as example in the
figure] through the holding boss (B) to lock auto-tensioner pulley arm.
4. Remove drive belt.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION: ^
Check drive belt is securely installed around all pulleys.
^ Check drive belt is correctly engaged with the pulley groove.
^ Check for engine oil and engine coolant are not adhered drive belt and pulley groove.

Inspection
INSPECTION AFTER INSTALLATION
^ Turn crankshaft pulley clockwise several times to equalize tension between each pulley, and then
confirm tension of drive belt at indicator (notch on fixed side) is within the possible use range.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Filters > Air Cleaner Housing > Air
Filter Element > Component Information > Service and Repair

INSTALLATION
Note the following, and install in the reverse order of removal. ^
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Filters > Cabin Air Filter >
Component Information > Service and Repair

Cabin Air Filter: Service and Repair
ON-VEHICLE MAINTENANCE
IN-CABIN MICROFILTER
Exploded View
VTL-21 Exploded View
Removal and Installation
REMOVAL
1. Remove instrument assist lower panel.
2. Remove filter cover (1), and then remove in-cabin microfilter (2).
INSTALLATION

Installation is basically the reverse order of removal.
Replacement
Replace in-cabin microfilter. Affix a caution label inside the glove box when replacing filter.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Filters > Fuel Filter > Fuel Pressure
Release > System Information > Service and Repair

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Filters > Oil Filter, Engine >
Component Information > Service and Repair

Oil Filter: Service and Repair
Removal and Installation
REMOVAL
CAUTION: ^
Oil filter is provided with relief valve. Use genuine NISSAN oil filter or equivalent.
^ Be careful not to get burned when engine and engine oil may be hot.
^ When removing, prepare a shop cloth to absorb any engine oil leakage or spillage.
^ Never allow engine oil to adhere to drive belts.
^ Completely wipe off any engine oil that adheres to engine and vehicle.
1. Remove engine undercover with power tool.
2. Using oil filter wrench [SST: KV10115801 (J38956)] (A), remove oil filter.
<—: Engine front
INSTALLATION
1. Remove foreign materials adhering to oil filter installation surface
2. Apply engine oil to the oil seal contact surface of new oil filter.
3. Screw oil filter manually until it touches the installation surface, then tighten it by 2/3 turn (A). Or
tighten to the specification.
Oil filter: 17.7 Nm (1.8 kg-m, 13 ft-lb)
Inspection
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-6, «Inspection». See: Fluids/Engine Oil/Testing and
Inspection 2. Start the engine, and check there is no leak of engine oil.

3. Stop the engine and wait for 10 minutes. 4. Check the engine oil level, and adjust the level.
Refer to LU-6, «Inspection». See: Fluids/Engine Oil/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Hoses > Coolant Line/Hose >
Component Information > Specifications

CO-24 Exploded View

Coolant Line/Hose: Service and Repair
WATER OUTLET AND WATER PIPING

CO-24 Exploded View
Removal and Installation
REMOVAL
1. Remove engine cover. 2. Remove reservoir tank. 3. Remove oil level gauge and guide. 4.
Remove air duct and air cleaner case assembly (RH and LH). 5. Remove engine undercover with
power tool. 6. Drain engine coolant from radiator drain plug at the bottom of radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
7. Remove radiator hose (upper) and heater hose.

8. Separate engine harness removing their bracket from water outlet (rear). 9. Remove engine
coolant temperature sensor as necessary
CAUTION: Be careful not to damage engine coolant temperature sensor.
10. Remove heater pipe, water bypass pipe and water outlet pipe. 11. Remove water outlet (rear)
as necessary
NOTE: Removing engine assembly is required.
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Securely insert each hose, and install clamp at a position where it does not interfere with the pipe
bulge.
^ When inserting water outlet pipe and water bypass pipe into water outlet, apply neutral detergent
to O-ring.
CAUTION: Never allow water outlet (rear) to nip O-rings when installing water outlet pipe and water
bypass pipe.
Inspection
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Engine, Cooling and Exhaust/Cooling System/Testing and Inspection/Initial Inspection and
Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Hoses > Hose/Line HVAC >
Component Information > Service and Repair > Low-Pressure Flexible Hose and Pipe 2

Hose/Line HVAC: Service and Repair Low-Pressure Flexible Hose and Pipe 2
LOW-PRESSURE FLEXIBLE HOSE AND PIPE 2
Exploded View
HA-40 Exploded View
Removal and Installation
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. 2. Remove
engine cover. 3. Remove air cleaner case (LH) and air duct (LH). 4. Remove cowl top cover.

5. Remove mounting bolt (A) from low-pressure flexible hose bracket (1).
6. Disconnect one-touch joint between low-pressure pipe 1 (1) and low-pressure pipe 2 (2) with
disconnector (A) (SST:9253089916).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
7. Disconnect one-touch joint between low-pressure pipe 2 (1) and low-pressure flexible hose (2)
with disconnector (A) (SST:9253089916).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
8. Remove low-pressure pipe 2 clip (B). 9. Remove low-pressure pipe 2.
10. Remove mounting nut (A) from low-pressure flexible hose (1).
CAUTION: Cap or wrap the joint of the A/C piping and compressor with suitable material such as
vinyl tape to avoid the entry of air.
11. Remove low-pressure flexible hose.

INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
— Replace O-rings with new ones. Then apply compressor oil to them when installing.
— Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
— Insert piping securely until a click is heard.
— After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
— Check for leakages when recharging refrigerant.

Hose/Line HVAC: Service and Repair High-Pressure Flexible Hose
HIGH-PRESSURE FLEXIBLE HOSE
Exploded View
HA-42 Exploded View
Removal and Installation
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. 2. Remove
engine cover. 3. Remove air cleaner case (LH) and air duct (LH).

4. Remove mounting bolt (A) from high-pressure flexible hose bracket (1).
5. Disconnect one-touch joint between high-pressure flexible hose (1) and condenser pipe
assembly (2) with disconnector (A) (SST: 9253089912).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
6. Remove mounting nut (A) from high-pressure flexible hose (1), and then remove high-pressure
flexible hose.
CAUTION: Cap or wrap the joint of the A/C piping and compressor with suitable material such as
vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
— Replace O-rings with new ones. Then apply compressor oil to them when installing.
— Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
— Insert piping securely until a click is heard.
— After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
— Check for leakages when recharging refrigerant.

Hose/Line HVAC: Service and Repair High-Pressure Pipe 1(Engine Compartment)
HIGH-PRESSURE PIPE 1(ENGINE COMPARTMENT)
Exploded View
HA-44 Exploded View
Removal and Installation
REMOVAL
1. Remove low-pressure flexible hose and pipe 2.

2. Remove mounting bolt (A) from high-pressure flexible hose bracket (1).
3. Remove high-pressure pipe 1 (1) from vehicle clips (A).
4. Disconnect one-touch joint between high-pressure pipe 1 (1) and high-pressure pipe 2 (2) with
disconnector (A) (SST:9253089908).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
5. Disconnect one-touch joint between high-pressure pipe 1 and condenser pipe assembly with
disconnector (A) (SST:9253089908).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
6. Remove vacuum hose. 7. Remove high-pressure pipe 1.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
— Replace O-rings with new ones. Then apply compressor oil to them when installing.
— Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
— Insert piping securely until a click is heard.
— After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.
— Check for leakages when recharging refrigerant.

Hose/Line HVAC: Service and Repair Low-Pressure Pipe 1 and High-Pressure Pipe 2
LOW-PRESSURE PIPE 1 AND HIGH-PRESSURE PIPE 2
Exploded View
HA-46 Exploded View
Removal and Installation
REMOVAL
1. Set the temperature at 18 °C (60 °F). Then disconnect the battery cable from the negative
terminal. 2. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. 3.
Remove cowl top cover.

4. Disconnect one-touch joint between low-pressure pipe 1 (1) and low-pressure pipe 2 (2) with
disconnector (A) (SST:9253089916).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
5. Disconnect one-touch joints between high-pressure pipe 1 (3) and high-pressure pipe 2 (4) with
disconnector (SST:9253089908).
CAUTION: Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid
the entry of air.
6. Remove foot grille (right). 7. Remove blower unit. 8. Remove air mix door motor (passenger
side). 9. Remove mode door motor.
10. Remove main link (right) and max. cool door link (right).
11. Remove mounting screws (A), and then remove evaporator cover (1).
12. Remove mounting bolt (A), and then remove low-pressure pipe 1 (1) and high-pressure pipe 2
(2).
CAUTION: Cap or wrap the joint of the A/C piping and expansion valve with suitable material such
as vinyl tape to avoid the entry of air.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
— Replace O-rings with new ones. Then apply compressor oil to them when installing.
— Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.
— Insert piping securely until a click is heard.
— After piping connection is completed, pull male-side piping by hand to make sure that connection
does not come loose.

— Check for leakages when recharging refrigerant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Hoses > Power Steering Line/Hose >
Component Information > Specifications

Power Steering Line/Hose: Specifications
ST-45 Exploded View

ST-46 Exploded View

Power Steering Line/Hose: Service and Repair
HYDRAULIC LINE
ST-45 Exploded View

ST-46 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Brake Fluid > Component
Information > Specifications

Brake Fluid: Specifications
Brake Fluid
Type ………………………………………………………………………………………………………. Nissan Super
Heavy Duty Brake Fluid or equivalent DOT 3 brake fluid

Brake Fluid: Service and Repair Inspection
Inspection
BRAKE FLUID LEVEL
^ Check that the fluid level in the reservoir tank is within the specified range (MAX — MIN lines).
^ Visually check for any brake fluid leakage around the reservoir tank.

^ Check the brake system for any leakage if the fluid level ‘is extremely low (lower than MIN).
^ Check the brake system for fluid leakage if the warning lamp remains illuminated even after the
parking brake is released.
BRAKE LINE
1. Check brake line (tubes and hoses) for cracks, deterioration or other damage. Replace any
damaged parts.
2. Check for fluid leakage by fully depressing brake pedal while engine is running.
CAUTION: If leakage occurs around joints, retighten or, if necessary, replace damaged parts.

Brake Fluid: Service and Repair Draining
Draining
CAUTION: ^
Never spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe
it off immediately and wash with water if it gets on a painted surface.
^ Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit)
connector or the battery negative terminal before performing work.
^ Cover crowfoot and flare nut wrench with a cloth as not to damage the caliper (front 4 piston type,
rear 2 piston type).
1. Connect a vinyl tube to the bleed valve. 2. Depress the brake pedal and loosen the bleeder valve
to gradually discharge brake fluid.

Brake Fluid: Service and Repair Refilling
Refilling
CAUTION: ^
Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit)
connector or the battery negative terminal before performing work.
^ Cover crowfoot and flare nut wrench with a cloth as not to damage the caliper (front 4 piston type,
rear 2 piston type).
1. Check that there is no foreign material in the reservoir tank, and refill with new brake fluid.
CAUTION: Never reuse drained brake fluid.
2. Loosen the bleeder valve, slowly depress the brake pedal to the full stroke, and then release the
pedal. Repeat this operation at intervals of 2 or 3
seconds until all brake fluid is discharged.. Then close the bleeder valve with the brake pedal
depressed. Repeat the same work on each wheel.
3. Perform the air bleeding.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Coolant > Component
Information > Specifications > Capacity Specifications

Coolant: Capacity Specifications
Coolant Capacity
w/ Reservoir Tank ………………………………………………………………………………………………………………..
…………………………………………. 9-1/2 U.s. qts (9.0 L)
Reservoir Tank ……………………………………………………………………………………………………………………
……………………………………………. 7/8 U.S. qts (0.8 L)

Coolant: Fluid Type Specifications
Coolant Type …………………………………………………………………………………………………….. Genuine
NISSAN Long Life Anti-Freeze Coolant or equivalent.
50% / 50% mixture of Coolant and Distilled or Demineralized water.

Coolant: Service Precautions
Anti-Freeze Coolant Mixture Ratio
The engine cooling system is filled at the factory with a high-quality, year round, anti-freeze coolant
solution. The anti-freeze solution contains rust and corrosion inhibitors. Therefore, additional
cooling system additives are not necessary.
CAUTION: When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life
Antifreeze/Coolant or equivalent with the proper mixture ratio of 50% anti-freeze and 50%
demineralized water/distilled water. Other types of coolant solutions may damage your cooling
system.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Fluid — A/T > Component
Information > Technical Service Bulletins > A/T — 7 Speed A/T, Fluid Level Checking/Filling

Fluid — A/T: Technical Service Bulletins A/T — 7 Speed A/T, Fluid Level Checking/Filling
Classification: TE09-002
Reference: ITB10-012

ESSENTIAL TOOL; J-49829 SEVEN SPEED A/T FILL PUMP
APPLIED VEHICLES: All Infiniti vehicles with Seven Speed A/T using Nissan Matic S ATF
SERVICE INFORMATION
When filling up checking the ATF level or if the pan of a RE7R01 series seven speed automatic
transmission has been drained or removed a special tool must be used.
^ This special tool is the «Transmission Fill Pump» J-49829.
^ This special tool is considered «Essential» and was sent to each dealer on January 19 2010. Your
Non-Vehicle account will be charged the introductory price of $177.85 plus applicable taxes and
freight.
^ For proper use of this tool go to SERVICE PROCEDURE.
CAUTION: Fill the Transmission Fill Pump with new Nissan Matic S ATF only. Never fill with any
other fluid.
SERVICE PROCEDURE

Check ATF Level
1. Park the vehicle on a lift.
2. Connect CONSULT III (C-III) to the vehicle.
3. Start the engine let it idle.
4. With C-III monitor ATF temperature.
5. Once the ATF temperature reaches approximately 104°F (40° C) shift the shift selector lever
(shift lever) in each gear position.
^ Return the shift lever to the P (Park) position.
^ Set the parking brake.
^ Leave the engine idling.
NOTE:
ATF temperature must be maintained at 95-11 3°F (35-45°C) during ATF level check.
6. Raise the vehicle as level on the lift.
7. Remove the overflow plug from the transmission pan (see Figure 1).
^ Have a drain pan positioned under the overflow plug hole.
^ At first an initial amount of fluid may come out. Do not be concerned.

NOTE:
The engine should be idling the whole time during fluid level check.
8. Check for a steady drip.
^ If fluid has a steady drip perform Step 9 to complete ATF level check. If fluid does not drip out
steadily skip Step 9 and go to Step 10.
9. Install a new overflow plug. This completes the ATF level check.
CAUTION:
Never reuse an overflow plug. Always use a new one with each ATF level check. Torque the filler
plug to 12.4 N.m (1.3 kg-m 9 ft lb).

10. If fluid does not drip out connect the Transmission Fill Pump (Pump) at the overflow plug hole
and pump in 0.5 liters of Nissan Matic S ATF (see
Figure 2).
NOTE:

Check to make sure fluid temperature is still within specified range.
11. Disconnect the pump’s hose at the quick disconnect (see Figure 2).
^ At first an initial amount of fluid may come out. Do not be concerned.
^ If fluid comes out as a steady drip perform Step 9 to complete ATF level check.
^ If fluid still does not come out as a steady drip repeat Step 10 until it does.
Once a steady drip is obtained perform Step 9 to complete ATF level check.
Refill After Draining / Removing The Pan
1. With the pan and drain plug installed connect the Transmission Fill Pump at the overflow plug
hole and then fill the pan with 3 liters (3-1/8 US
quarts 2-5/8 Imp. quarts) of Nissan Matic S ATF.
2. Perform Check ATF Level procedure starting with Step 2.
Disclaimer

Fluid — A/T: Technical Service Bulletins A/T — Special Fluid Requirement Information
Classification: AT07-005a
Reference: ITB08-022a
Date: August 8, 2008
INFINITI; SPECIAL AUTOMATIC TRANSMISSION FLUID REQUIREMENT
This bulletin has been amended to apply to all current production models and to update Parts
Information. Please discard all earlier versions.
APPLIED VEHICLES: 2004 to current Infiniti vehicles
SERVICE INFORMATION
If Warranty repairs are being done on a transmission listed in the chart below, the listed fluid must
be used. A claim to Infiniti for warranty, service contract, or goodwill repairs to the transmissions
listed below may be denied if Genuine Nissan ATF Fluid is not used as specified by the part
number in this bulletin.
If Customer Pay service or repair of the transmissions listed below is done, the fluid type listed in
the chart below must be used. Infiniti recommends the Genuine Nissan ATF fluid part number listed
below be used.
PARTS INFORMATION

Disclaimer

Fluid — A/T: Capacity Specifications
Automatic Transmission Fluid
………………………………………………………………………………………………………………………………………
10-7/8 U.S. qts (10.3 L)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Fluid — A/T > Component
Information > Specifications > Capacity Specifications > Page 1320

Fluid — A/T: Fluid Type Specifications
Automatic Transmission Fluid Type
Recommended Fluid ……………………………………………………………………………………………………………
………………………………….. Nissan Matic Fluid J ATF
CAUTION: Use only Nissan Genuine ATF Matic Fluid J. Do not mix with other fluid. Using
automatic transmission fluid other than Nissan Genuine ATF Matic Fluid J will deteriorate in
driveability and automatic transmission durability, and may damage the automatic transmission,
which is not covered by the warranty.

Fluid — A/T: Procedures
Inspection
A/T FLUID LEAKAGE AND A/T FLUID LEVEL CHECK
1. Warm up engine. 2. Check for A/T fluid leakage.
3. Before driving, A/T fluid level can be checked at A/T fluid temperatures of 30 to 50°C (86 to
122°F) using «COLD» range on A/T fluid level

gauge as follows.
a. Park vehicle on level surface and set parking brake. b. Start engine and move selector lever
through each gear position. Leave selector lever in «P» position. c. Check A/T fluid level with engine
idling.
d. Remove A/T fluid level gauge and wipe clean with lint-free paper.
CAUTION: When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.
e. Re-insert A/T fluid level gauge into A/T fluid charging pipe as far as it will go.
CAUTION: Firmly fix the A/T fluid level gauge to the A/T fluid charging pipe using a stopper
attached.
f. Remove A/T fluid level gauge and note reading. If reading is at low side of range, add ATF to the
A/T fluid charging pipe.
CAUTION: Do not overfill.
4. Drive vehicle for approximately 5 minutes in urban areas. 5. Make the A/T fluid temperature
approximately 65°C (149°F).
NOTE: A/T fluid level will be greatly affected by temperature as shown in figure. Therefore, be
certain to perform operation while checking data with CONSULT-III.

a. Connect CONSULT-III to data link connector. b. Select «DATA MONITOR» mode for
«TRANSMISSION». c. Read out the value of «ATF TEMP 1». 6. Re-check A/T fluid level at A/T fluid
temperatures of approximately 65°C (149°F) using «HOT» range on A/T fluid level gauge.
CAUTION: ^
When wiping away the A/T fluid level gauge, always use lint-free paper, not a cloth one.
^ Firmly fix the A/T fluid level gauge to the A/T fluid charging pipe using a stopper attached.
7. Install the removed A/T fluid level gauge in the A/T fluid charging pipe.
A/T FLUID CONDITION CHECK
Check the A/T fluid condition.

Fluid — A/T: Removal and Replacement
Changing
1. Warm up ATF. 2. Stop engine. 3. Drain ATF from drain plug and refill with new ATF. Always refill
same volume with drained ATF.
^ To replace the ATF, pour in new ATF at the A/T fluid charging pipe with the engine idling and at
the same time drain the old ATF from the radiator cooler hose return side.
^ When the color of the ATF coming out is about the same as the color of the new ATF, the
replacement is complete. The amount of new ATF to use should be 30 to 50% increase of the
stipulated amount. ATF: Refer to TM-329, «General Specification». See: Specifications/Mechanical
Specifications/Automatic Transmission/Transaxle/System Specifications/General Specification
Fluid capacity: Refer to TM-329, «General Specification». See: Specifications/Mechanical
Specifications/Automatic Transmission/Transaxle/System Specifications/General Specification
CAUTION: ^
Use only Genuine NISSAN Matic J ATF. Do not mix with other ATF.
^ Using ATF other than Genuine NISSAN Matic J ATF will cause deterioration in driveability and
A/T durability, and may damage the A/T, which is not covered by the NISSAN new vehicle limited
warranty.
^ When filling ATF, be careful not to scatter heat generating parts such as exhaust.
^ Do not reuse drain plug gasket.
Drain plug tightening torque: Refer to TM-232, «Exploded View». See: Transmission and
Drivetrain/Automatic Transmission/Transaxle/Valve Body/Service and Repair/Control Valve with
TCM
4. Run engine at idle speed for 5 minutes. 5. Check A/T fluid level and condition. Refer to TM-214,
«Inspection». See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service
and Repair/Procedures If ATF is still dirty, repeat step 2. through 5.
6. Install the removed A/T fluid level gauge into A/T fluid charging pipe.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Fluid — M/T > Component
Information > Specifications > Capacity Specifications

Fluid — M/T: Capacity Specifications
Manual Transmission Fluid
………………………………………………………………………………………………………………………………………….
6-1/4 U.S. pints (2.93 L)

Fluid — M/T: Fluid Type Specifications
Manual Transmission Fluid
Genuine NISSAN Manual Transmission Fluid (MTF) HQ Multi 75W-85 or API GL-4, Viscosity SAE
75W-85 or 75W-90

Fluid — M/T: Service and Repair
LEAKAGE
Make sure that gear oil is not leaking from transmission or around it.
LEVEL
1. Remove filler plug (1). 2. Check oil level from filler plug mounting hole as shown in the figure.
CAUTION: Never start engine while checking oil level.
3. Set a gasket on filler plug and then install it to transmission case.
CAUTION: Never reuse gasket.
4. Tighten filler plug to the specified torque. Refer to TM-29, «Exploded View». See: Transmission
and Drivetrain/Manual
Transmission/Transaxle/Service and Repair/Overhaul/Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Fluid — Differential >
Component Information > Specifications > Capacity Specifications

Fluid — Differential: Capacity Specifications
Differential Fluid Capacity
Front ………………………………………………………………………………………………………………………………….
………………………………………………… 1-3/8 pt (0.65L)
Rear …………………………………………………………………………………………………………………………………..
………………………………………………………. 3 pt (1.40L)

Fluid — Differential: Fluid Type Specifications
NOTE: For hot climates,viscosity SAE 90 is suitable for ambient temperatures above 0°C(32°F)
API GL-5 VISCOSITY (Preferred): …………………………………………………………………………………………
………………………………………………….. SAE 80W-90

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > Customer Interest: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual
Engine Noises

Engine Oil: Customer Interest Engine — Oil Level Is Too Low/Unusual Engine Noises
Classification: EM10-006
Reference: ITB10-048
Date: July 30, 2010
2008 — 2010 G37; ENGINE OIL LEVEL IS LOW
APPLIED VEHICLES: 2009 — 2010 G37 Sedan (V36) 2008 — 2010 G37 Coupe (CV36) 2009 — 2010
G37 Convertible (HV36)
APPLIED ENGINE: VQ37VHR ONLY
APPLIED VIN / DATE
IF YOU CONFIRM
Engine oil level is low OR there is unusual engine noise.
ACTION

Use the «Repair Flow Chart» shown below to determine the complete repair procedures for a
specific vehicle.
CAUTION:
If the short engine is replaced as part of this bulletin, please advise the customer to follow the
Owner’s Manual Engine «Break-in Schedule» for the first 1,200 miles including:
^ DO NOT RUN THE ENGINE OVER 4,000 RPM.
^ DO NOT ACCELERATE AT FULL THROTTLE.
NOTE:
Check OBD-II «Engine» Self Diagnosis for any stored DTC codes and use the appropriate
Electronic Service Manual (ESM) to repair any DTC code found stored.
SERVICE PROCEDURE

Refer to the Repair Flow Chart above to determine the steps needed for this vehicle.
INITIAL ENGINE OIL LEVEL CHECK
^ This step should be performed only if you do not have verified Infiniti service history information
indicating the vehicle mileage at the last oil change.

^ Go to step 12 (oil level check after 1,000-3750 miles) if you do have verified vehicle mileage
information at the last oil change.
1. Park the vehicle on a level surface and apply the parking brake.
2. Make sure the engine has been OFF for more than 10 minutes.
^ This allows the engine oil to drain back into the engine pan.
^ Engine OFF for 30 minutes or more is ideal.
3. Remove the oil dip stick and wipe it clean.

4. Reinsert the dip stick all the way.

5. Pull the dip stick out again and check the oil level:
^ If the oil level is in this range (Figure 1);
^ Go to «Add Oil And Check For Noise».
^ Perform steps 6 and 7 only.
If the oil level is in this range (Figure 2; not registered on the dip stick at all):
^ Go to «Change Oil And Check For Noise».
^ Perform steps 8 through 11.
ADD OIL AND CHECK FOR NOISE
Oil level is found in the range shown in Figure 3; perform steps 6 and 7 only.
6. Add oil as needed to bring level to the H mark (completely full).
^ Recommended oil: API SERVICE SL / SAE 5W-30.
NOTE:
Oil that is added to the engine will take a few minutes to drain down to the engine pan. Wait at least
10 minutes before rechecking the oil level.
7. Check for unusual engine noises:
^ If there are no unusual engine noises; record the vehicle mileage; return the vehicle to the
customer; and ask the customer to return to the dealer after

1000 — 3750 miles to recheck oil level.
or
^ If there are any unusual engine noises, replace the short engine assy. using standard Warranty
Repair Practices.
NOTE:
For engine noise warranty claims, reference the current Infiniti Warranty Flat Rate Manual.
CHANGE OIL AND CHECK FOR NOISE
Oil level is found in the range shown in Figure 4, (not registered on the dip stick at all), perform
steps 8 though 11.
8. Change the oil and filter.
^ Make sure the oil is filled exactly to the H mark (completely full).
NOTE:
Oil that is added to the engine will take a few minutes to drain down to the engine pan. Wait at least
10 minutes before rechecking the oil level.
^ Recommended oil: API SERVICE SL / SAE 5W-30.
9. Check for unusual engine noise.
^ If there are no unusual engine noises; go to step 10;
or
^ If there are any unusual engine noises, replace the short engine assy. using standard Warranty
Repair Practices.

NOTE:
For engine noise warranty claims, reference the current Infiniti Warranty Flat Rate Manual.
10. Record the vehicle mileage.
11. Ask the customer to return to the dealer after 1000 — 3750 miles to recheck the engine oil level.
OIL LEVEL CHECK AFTER 1000 — 3750 MILES
12. Park the vehicle on a level surface with the engine stopped for at least ten (10) minutes.
IMPORTANT:
The 30 minute time period is ideal to allow all of the oil to drain back to the oil pan (crankcase).

13. Write down the exact oil level reading using the engine dipstick and ruler (see Figure 5).
^ To measure; line up the 0 mm edge of the ruler with the H mark on the dipstick.
^ The example in Figure 5 shows the oil level is 8 mm below the H mark.
14. Check service records for the last time the engine oil was filled.
NOTE:
For the purposes of this bulletin, the following documentation for oil level checked and filled will be
accepted.
=> Repair / work order from any Infiniti dealer showing the vehicle mileage and indicating service
for «check and refill oil level», or «oil and filter change».
15. Determine the number of miles driven since the last engine oil was filled.
16. Select the correct mileage range at the top of the Oil Consumption Chart below.
17. Use your ruler reading from step 2 to select the correct «mm» ruler reading at the left side of the
chart.
18. Write down your results (OK or NO GOOD) based on the intersecting points of the mileage and
«mm» ruler reading.

OIL CONSUMPTION CHART (FOR VQ37VHR ONLY)
If the oil level is in the No Good range:
a. Order a replacement Short Engine Assy. and Gasket Kit.
b. Schedule an appointment for short engine replacement.
c. Fill the engine oil to the «H» mark and release the vehicle to the customer.
NOTE:
Advise the customer to check the oil level at least every 1000 miles and make sure the oil level is
refilled to the «H» mark while waiting for the scheduled engine replacement date.
CAUTION:

If the short engine is replaced as part of this bulletin, please advise the customer to follow the
Owner’s Manual Engine «Break-In Schedule» for the first 1,200 miles including:
^ DO NOT RUN THE ENGINE OVER 4,000 RPM.
^ DO NOT ACCELERATE AT FULL THROTTLE.
If the oil level is in the OK range:
a. Fill the engine oil to the «H» mark on the dip stick.
b. Record the amount of oil added.
c. Record the vehicle mileage.

d. Release the vehicle to the customer.
^ No further action is needed.
^ Remind the customer to continue to check the oil level every 1000 miles or every other fuel fill up.
NOTE:
If the customer chooses, they may return up to 3 times for a 1000 — 3750 mile oil level check.
PARTS INFORMATION
CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises

Engine Oil: All Technical Service Bulletins Engine — Oil Level Is Too Low/Unusual Engine Noises
Classification: EM10-006
Reference: ITB10-048
Date: July 30, 2010
2008 — 2010 G37; ENGINE OIL LEVEL IS LOW
APPLIED VEHICLES: 2009 — 2010 G37 Sedan (V36) 2008 — 2010 G37 Coupe (CV36) 2009 — 2010
G37 Convertible (HV36)
APPLIED ENGINE: VQ37VHR ONLY
APPLIED VIN / DATE
IF YOU CONFIRM
Engine oil level is low OR there is unusual engine noise.
ACTION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1355

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1356

4. Reinsert the dip stick all the way.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1357

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1358

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1359

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 10-048 > Jul > 10 > Engine — Oil Level Is Too
Low/Unusual Engine Noises > Page 1360

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Technical Service Bulletins: > 08-039 > Aug > 08 > Engine — Engine Oil
Recommendation

Engine Oil: All Technical Service Bulletins Engine — Engine Oil Recommendation
Classification: EM08-004
Reference: ITB08-039
Date: August 6, 2008
ENGINE OIL RECOMMENDATION
APPLIED VEHICLES: 2008 — 2009 G37 (CV36) 2009 FX50 (S51) VK50 Engine Only
SERVICE INFORMATION
INFINITI recommends Genuine NISSAN Ester Engine Oil available at your INFINITI dealer.
PARTS INFORMATION
Disclaimer

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1370

5. Remove / disconnect the impact sensor Brown wire from the Light Green wire in BCM connector
123, cavity 124 (see Figure 1).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1371

7. Apply electrical tape to the Posi-Tap(R) and Brown wire as shown in Figure 3.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1372

c). Tighten the tap TIGHT with finger pressure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1373

4. Inspect the tap to ensure correct installation.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1379

5. Remove / disconnect the impact sensor Brown wire from the Light Green wire in BCM connector
123, cavity 124 (see Figure 1).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1380

7. Apply electrical tape to the Posi-Tap(R) and Brown wire as shown in Figure 3.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1381

c). Tighten the tap TIGHT with finger pressure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil: > 09-025 > May > 09 > Antitheft Windows Move When Closing Glove Box > Page 1382

4. Inspect the tap to ensure correct installation.

Engine Oil: Capacity Specifications
Drain & Refill
w/ filter ……………………………………………………………………………………………………………………………….
………………………………………… 5-1/8 U.S. qts (4.9 L)
w/o filter ……………………………………………………………………………………………………………………………..
………………………………………… 4-7/8 U.S. qts (4.6 L)
Dry Engine ………………………………………………………………………………………………………………………….
…………………………………………… 6.0 U.S. qts (5.7 L)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Engine Oil > Component
Information > Specifications > Capacity Specifications > Page 1385

Engine Oil: Fluid Type Specifications
ENGINE OIL
Type …………………………………………………………………………………………………………………………………..
………………………………………. API Certification mark
Viscosity …………………………………………………………………………………………………………………………….
……………………………………………………… SAE 5W-30

Engine Oil: Service Precautions
Engine Oil Recommendation
NISSAN recommends the use of an energy conserving oil in order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certification and
International Lubricant Standardization and Approval Committee (ILSAC) certification and SAE
viscosity standard. These oils have the API certification mark on the front of the container. Oils
which do not have the specified quality label should not be used as they could cause engine
damage.

Engine Oil: Testing and Inspection
ENGINE OIL LEVEL
NOTE: Before starting engine, put vehicle horizontally and check the engine oil level. If engine is
already started, stop it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and check the engine oil level is within the range (A) shown in the figure. 3.
If it is out of range, adjust it.
NOTE:

When checking the engine oil level, insert oil level gauge (1) with its tip aligned with oil level gauge
guide.
2: Engine cover <—: Engine front
ENGINE OIL APPEARANCE
^ Check engine oil for white turbidity or heavy contamination.
^ If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine
coolant. Repair or replace damaged parts.

Engine Oil: Service and Repair
Draining
WARNING: ^
Be careful not to get burn yourself, as engine oil may be hot.
^ Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct
skin contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand
cleaner as soon as possible.
1. Warm up the engine, and check for engine oil leakage from engine components. Refer to LU-6,
«Inspection». See: Testing and Inspection 2. Stop the engine and wait for 10 minutes. 3. Loosen oil
filler cap. 4. Remove undercover with power tool. 5. Remove drain plug and then drain engine oil.
Refilling
1. Install drain plug with new washer.
CAUTION: Be sure to clean drain plug and install with new washer.
Tightening torque: Refer to EM-42, «Exploded View». See: Engine, Cooling and
Exhaust/Engine/Engine Lubrication/Oil Pan/Service and Repair/Lower
2. Refill with new engine oil.
Engine oil specification and viscosity: Refer to «Refilling»
Engine oil capacity: Refer to LU-15, «Periodical Maintenance Specification». See: Engine, Cooling
and Exhaust/Engine/Engine Lubrication/Specifications/Capacity Specifications
CAUTION: ^
When filling engine oil, do not pull out oil level gauge.
^ The refill capacity depends on the engine oil temperature and drain time. Use these specifications
for reference only.
^ Always use oil level gauge to determine the proper amount of engine oil in engine.
3. Warm up the engine and check area around drain plug and oil filter for engine oil leakage. 4.
Stop the engine and wait for 10 minutes. 5. Check the engine oil level. Refer to LU-6, «Inspection».
See: Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Power Steering Fluid >
Component Information > Specifications

Power Steering Fluid: Specifications
Power Steering Fluid
Type …………………………………………………………………………………………………………………………………..
…………………… Genuine NISSAN PSF or equivalent

Power Steering Fluid: Service and Repair
POWER STEERING FLUID
Inspection
FLUID LEVEL
1. Check fluid level with engine stopped.
2. Ensure that fluid level is between MIN and MAX. 3. Fluid levels at HOT and COLD are different.
Do not confuse them.
HOT: Fluid temperature 50 — 80°C (122 — 176°F) COLD: Fluid temperature 0 — 30°C (32 — 86°F)
Recommended fluid: Refer to MA-10, «Fluids and Lubricants». Fluid capacity: Refer to ST-47,
«General Specifications». See: Specifications/Mechanical Specifications/Steering/Steering
Gear/General Specifications
CAUTION: ^
The fluid level should not exceed the MAX line. Excessive fluid causes fluid leakage from the cap.
^ Never reuse drained power steering fluid.
FLUID LEAKAGE
^ Check hydraulic connections for fluid leakage, cracks, damage, looseness, or wear.
1. Run engine until the fluid temperature reaches 50 to 80°C (122 to 176°F) in reservoir tank, and
keep engine speed idle. 2. Turn steering wheel several times from full left stop to full right stop. 3.
Hold steering wheel at each lock position for five seconds and carefully, check for fluid leakage.
CAUTION: Never hold the steering wheel in a locked position for more than 10 seconds. (There is
the possibility that power steering oil pump assembly may be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not
overtighten connector as this can damage O-ring, washer
and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to ST-38, «EXCEPT FOR SPORT
MODELS: Inspection» (Except for sport
models), ST-43, «SPORT MODELS: Inspection» (Sport models). See: Steering and
Suspension/Steering/Testing and Inspection/Component Tests and General Diagnostics/Except
For Sport Models See: Steering and Suspension/Steering/Testing and Inspection/Component
Tests and General Diagnostics/Sport Models
6. Check steering gear boots for accumulation of fluid indicating from steering gear.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Refrigerant > Component
Information > Technical Service Bulletins > Customer Interest for Refrigerant: > 09-041 > Sep > 09 > A/C — Refrigerant
Leaks At Connections

Refrigerant: Customer Interest A/C — Refrigerant Leaks At Connections

Classification: HA09-004
Reference: ITB09-041
Date: September 25, 2009
A/C SYSTEM O-RING SEAL LEAKS
APPLIED VEHICLES: All Infiniti vehicles with A/C system
IF YOU CONFIRM
A refrigerant leak at a refrigerant pipe/hose joint location,
NOTE:
Follow the leak detection information in the Service Manual to determine the source of refrigerant
leaks.
ACTIONS
NOTE:
The O-ring seal is the most common cause of a refrigerant leak at an A/C joint.
1. Inspect the metal surfaces of the pipe/hose joint for damage or contamination.
NOTE:
Do not replace a refrigerant pipe, hose, or other A/C component if an o-ring seal will solve the leak
incident, if it should occur.
2. If no damage is found to the joint metal surfaces, replace the O-ring seal.
CAUTION:
^ When replacing O-ring seals, use lint-free gloves,
^ Make sure no foreign material is introduced into the system when the joint is open.
^ Apply A/C oil to the O-ring before installation.
^ After recharging the system, recheck for leaks.
PARTS INFORMATION
Reference an electronic parts catalog (FAST or equivalent) for any needed parts.
CLAIMS INFORMATION
Reference the current Infiniti Warranty Flat Rate Manual and use the correct coding for repairs
performed.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Refrigerant > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Refrigerant: > 09-041 > Sep > 09 > A/C Refrigerant Leaks At Connections

Refrigerant: All Technical Service Bulletins A/C — Refrigerant Leaks At Connections

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Refrigerant > Component
Information > Specifications > Capacity Specifications > Page 1408

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fluids > Refrigerant Oil > Component
Information > Specifications > Capacity Specifications

Refrigerant Oil: Service and Repair
ON-VEHICLE MAINTENANCE
LUBRICANT
Maintenance of Lubricant Quantity
The lubricant in the compressor circulates through the system the refrigerant. Add lubricant to
compressor when replacing any component or after a large refrigerant leakage occurred. It is
important to maintain the specified amount.
If lubricant quantity is not maintained properly, the following malfunctions may result:
— Lack of lubricant: May lead to a seized compressor.
— Excessive lubricant: Inadequate cooling (thermal exchange interference)
LUBRICANT
Name : NISSAN A/C System Oil Type S
LUBRICANT RETURN OPERATION

Adjust the lubricant quantity according to the test group shown below.
Step 1-3
Lubricant Adjusting Procedure for Components Replacement Except Compressor
Add the correct amount of lubricant to the system after replacing any of the following major
components. Amount of lubricant to be added:

Lubricant Adjusting Procedure for Compressor Replacement
1. Check recovery/recycling recharging equipment gauges before connecting recovery/recycling
recharging equipment to vehicle. No refrigerant
pressure should be displayed. Recover refrigerant from equipment lines if NG.
2. Connect recovery/recycling recharging equipment to vehicle. Confirm refrigerant purity in supply
tank using recovery/recycling recharging
equipment and refrigerant identifier. Refer to «Working with HFC-134a (R-134a)»if NG.
3. Confirm refrigerant purity in vehicle A/C system using recovery/recycling recharging equipment
and refrigerant identifier. If NG, refer to
«Working with HFC-134a (R-134a)».
4. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure lubricant
discharged into the recovery/recycling equipment. 5. Drain the lubricant from the old (removed)
compressor into a graduated container and recover the amount of lubricant drained. 6. Drain the
lubricant from the new compressor into a separate. Then clean container. 7. Measure an amount of
new lubricant installed equal to amount drained from old compressor. Add this lubricant to new
compressor through the
suction port opening.
8. Measure an amount of new lubricant equal to the amount recovered during discharging. Add this
lubricant to new compressor through the suction
port opening.
9. Add another 5 ml (0.2 US fl oz., 0.2 Imp fl oz.) of lubricant at this time if the liquid tank also
needs to be replaced.
Do not add this 5 ml (0.2 US fl oz., 0.2 Imp fl oz.) of lubricant when replacing the compressor only.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Brake Bleeding > System Information
> Service and Repair

Brake Bleeding: Service and Repair
Bleeding Brake System
CAUTION: ^
Turn the ignition switch OFF and disconnect the ABS actuator and electric unit (control unit)
connector or the battery negative terminal before performing the work.
^ Monitor the fluid level in the reservoir tank while performing the air bleeding.
^ Always use new brake fluid for refilling. Never reuse the drained brake fluid.
^ Cover crowfoot and flare nut wrench with a cloth as not to damage the caliper (front 4 piston type,
rear 2 piston type).
1. Connect a vinyl tube to the bleeder valve of the rear right brake. 2. Fully depress the brake pedal
4 to 5 times. 3. Loosen the bleeder valve and bleed air with the brake pedal depressed, and then
quickly tighten the bleeder valve. 4. Repeat steps 2 and 3 until all of the air is out of the brake line.
5. Tighten the bleeder valve to the specified torque. Refer to BR-43, «BRAKE CALIPER
ASSEMBLY (1 PISTON TYPE): Exploded View» [front
disc brake (1 piston type)], BR-47, «BRAKE CALIPER ASSEMBLY (4 PISTON TYPE): Exploded
View» [front disc brake (4 piston type), BR-56, «BRAKE CALIPER ASSEMBLY (1 PISTON TYPE):
Exploded View» [rear disc brake (1 piston type)], BR-59, «BRAKE CALIPER ASSEMBLY (2
PISTON TYPE): Exploded View» [rear disc brake (2 piston type)]. See: Brakes and Traction
Control/Disc Brake System/Brake Caliper/Service and Repair/Removal and Replacement/Front/1
Piston Type See: Brakes and Traction Control/Disc Brake System/Brake Caliper/Service and
Repair/Removal and Replacement/Front/4 Piston Type See: Brakes and Traction Control/Disc
Brake System/Brake Caliper/Service and Repair/Removal and Replacement/Rear/1 Piston Type
See: Brakes and Traction Control/Disc Brake System/Brake Caliper/Service and Repair/Removal
and Replacement/Rear/2 Piston Type
6. Perform steps 1 to 5 for the rear right brake —> front left brake —> rear left brake —> and front
right brake in order. 7. Check that the fluid level in the reservoir tank is within the specified range
after air bleeding. Refer to BR-11, «Inspection». See: Fluids/Brake
Fluid/Service and Repair/Inspection
8. Check each item of brake pedal. Adjust it if the measurement value is not the standard. Refer to
BR-7, «Inspection and Adjustment». See: Brakes
and Traction Control/Brake Pedal Assy/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Air Bag(s) Arming and Disarming >
System Information > Service and Repair

Air Bag(s) Arming and Disarming: Service and Repair
CAUTION:
— Before servicing SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3
minutes.
— Always work from the side of driver air bag module.
— After the work is completed, perform self-diagnosis to make sure no malfunction is detected.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Circuit
Breaker > Component Information > Testing and Inspection

Circuit Breaker: Testing and Inspection
Circuit Breaker
The PTC thermistor generates heat in response to current flow. The temperature (and resistance)
of the thermistor element varies with current flow. Excessive current flow will cause the element’s
temperature to rise. When the temperature reaches a specified level, the electrical resistance will
rise sharply to control the circuit current. Reduced current flow will cause the element to cool.
Resistance falls accordingly and normal circuit current flow is allowed to resume.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Fuse >
Component Information > Locations > IPDM E/R (Intelligent Power Distribution Module Engine Room)

Fuse: Testing and Inspection
Fuse
— If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
— Use fuse of specified rating. Never use fuse of more than specified rating.
— Do not partially install fuse; always insert it into fuse holder properly.
— Remove fuse for «ELECTRICAL PARTS (BAT)» if vehicle is not used for a long period of time.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Fuse
Block > Component Information > Diagrams > IPDM E/R (Intelligent Power Distribution Module Engine Room)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Fusible
Link > Component Information > Diagrams > Diagram Information and Instructions

Fusible Link: Diagram Information and Instructions
How to Read Harness Layout
HARNESS LAYOUT
How To Read Harness Layout
CONNECTOR SYMBOL
How to Read Wiring Diagrams
HOW TO READ WIRING DIAGRAMS
Connector symbols
Most of connector symbols in wiring diagrams are shown from the terminal side.

— Connector symbols shown from the terminal side are enclosed by a single line and followed by
the direction mark.
— Connector symbols shown from the harness side are enclosed by a double line and followed by
the direction mark.
— Certain systems and components, especially those related to OBD, may use a new style
slide-locking type harness connector. For description and how to disconnect, refer to «Description»,
«HARNESS CONNECTOR».
Male and female terminals
Connector guides for male terminals are shown in black and female terminals in white in wiring
diagrams.
Sample/wiring diagram -example-

Description

SWITCH POSITIONS
Switches are shown in wiring diagrams as if the vehicle is in the «normal» condition. A vehicle is in
the «normal» condition when:

— ignition switch is «OFF»,
— doors, hood and trunk lid/back door are closed,
— pedals are not depressed, and
— parking brake is released.
MULTIPLE SWITCH
The continuity of multiple switch is described in two ways as shown below.
— The switch chart is used in schematic diagrams.
— The switch diagram is used in wiring diagrams.
Harness Connector
HARNESS CONNECTOR

Description
HARNESS CONNECTOR (TAB-LOCKING TYPE)
— The tab-locking type connectors help prevent accidental looseness or disconnection.
— The tab-locking type connectors are disconnected by pushing or lifting the locking tab(s). Refer to
the figure below.
CAUTION: Never pull the harness or wires when disconnecting the connector.
HARNESS CONNECTOR (SLIDE-LOCKING TYPE)
— A new style slide-locking type connector is used on certain systems and components, especially
those related to OBD.

— The slide-locking type connectors help prevent incomplete locking and accidental looseness or
disconnection.
— The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the
figure below.
CAUTION:
— Never pull the harness or wires when disconnecting the connector.
— Be careful not to damage the connector support bracket when disconnecting the connector.

HARNESS CONNECTOR (LEVER LOCKING TYPE)
— Lever locking type harness connectors are used on certain control units and control modules such
as ECM, ABS actuator and electric unit (control unit), etc.
— Lever locking type harness connectors are also used on super multiple junction (SMJ)
connectors.
— Always confirm the lever is fully locked in place by moving the lever as far as it will go to ensure
full connection.
CAUTION: Always confirm the lever is fully released (loosened) before attempting to disconnect or
connect these connectors to avoid damage to the connector housing or terminals.

Standardized Relay
STANDARDIZED RELAY
Description
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
TYPE OF STANDARDIZED RELAYS

Fusible Link: Testing and Inspection
Fusible Link
A melted fusible link can be detected either by visual inspection or by feeling with finger tip. If its
condition is questionable, use circuit tester or test lamp.
CAUTION:
— If fusible link should melt, it is possible that critical circuit (power supply or large current carrying
circuit) is shorted. In such a case, carefully check and eliminate cause of malfunction.
— Never wrap outside of fusible link with vinyl tape. Important: Never let fusible link touch any other
wiring harness, vinyl or rubber parts.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Relay
Box > Component Information > Technical Service Bulletins > Customer Interest for Relay Box: > 08-011 > Feb > 08 >
Electrical — Relay Box Cover Replacement

2. Remove 5 clips (A) located on the hood lid cover (B). See Figure 4.
3. Remove the hood lid cover.
4. Refer to Figures 5 and 6 to locate the relay box upper cover.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Relay
Box > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Relay Box: > 08-011 > Feb
> 08 > Electrical — Relay Box Cover Replacement

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Fuses and Circuit Breakers > Relay
Box > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Relay Box: > 08-011 > Feb
> 08 > Electrical — Relay Box Cover Replacement > Page 1468

2. Remove 5 clips (A) located on the hood lid cover (B). See Figure 4.
3. Remove the hood lid cover.
4. Refer to Figures 5 and 6 to locate the relay box upper cover.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Service Reminder Indicators > Low
Tire Pressure Indicator > Component Information > Locations

Low Tire Pressure Indicator: Service and Repair
Tire Pressure Monitor Reset Procedure
The TPMS will activate only when the vehicle is driven at speeds above 16 MPH (25 km/h). Also,
this system may not detect a sudden drop in tire pressure (for example a flat tire while driving).
The low tire pressure warning light does not automatically turn off when the tire pressure is
adjusted. After the tire is inflated to the recommended pressure, the vehicle must be driven at
speeds above 16 MPH (25 km/h) for several minutes to activate the TPMS and turn off the low tire
pressure warning light. Use a tire pressure gauge to check the tire pressure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Service Reminder Indicators >
Maintenance Required Lamp/Indicator > Component Information > Service and Repair

Maintenance Required Lamp/Indicator: Service and Repair
Resetting The Distance For Changing The Engine Oil
Switches for the trip computer are located on the right side of the combination meter panel. To
operate the trip computer, push the side or front of the switches as shown above.
When the ignition switch is pushed to the ON position, modes of the trip computer can be selected
by pushing switch A.
Push switch A until the display reads: SETTING.
Switch A and switch B are used in the setting mode to select and decide on a menu.
Push switch A to move to the warning check mode. Push switch B to select other menus.

Go to the Maintenance submenu and select: ENGINE OIL to select or reset the distance for
changing the engine oil.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Service Reminder Indicators >
Malfunction Indicator Lamp — A/T > Component Information > Locations

Malfunction Indicator Lamp — A/T: Locations
Without Paddle Shifter
NOTE: ^
The following components are included in A/T control device (2).
— Manual mode select switch

— Manual mode position select switch
— Shift position switch
^ The following components are included in control valve with TCM (8).
— TCM
— Turbine revolution sensor 1, 2
— Revolution sensor
— A/T fluid temperature sensor 1, 2
— PNP switch
— Line pressure solenoid valve
— Torque converter clutch solenoid valve
— Direct clutch solenoid valve
— High and low reverse clutch solenoid valve
— Input clutch solenoid valve
— Front brake solenoid valve
— Low coast brake solenoid valve
— ATF pressure switch 2

With Paddle Shifter
NOTE: ^
The following components are included in A/T control device (4).
— Manual mode select switch
— Manual mode position select switch

— Shift position switch
^ The following components are included in control valve with TCM (10).
— TCM
— Turbine revolution sensor 1, 2
— Revolution sensor
— A/T fluid temperature sensor 1, 2
— PNP switch
— Line pressure solenoid valve
— Torque converter clutch solenoid valve
— Direct clutch solenoid valve
— High and low reverse clutch solenoid valve
— Input clutch solenoid valve
— Front brake solenoid valve
— Low coast brake solenoid valve
— ATF pressure switch 2

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Vehicle Lifting >
Component Information > Service and Repair

Vehicle Lifting: Service and Repair
Garage Jack and Safety Stand and 2-Pole Lift
WARNING:
— Park the vehicle on a level surface when using the jack. Make sure to avoid damaging pipes,
tubes, etc. under the vehicle.
— Never get under the vehicle while it is supported only by the jack. Always use safety stands when
you have to get under the vehicle.

— Place wheel chocks at both front and back of the wheels on the ground.
— When lifting the vehicle, open the lift arms as wide as possible and ensure that the front and rear
of the vehicle are well balanced.
— When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, fuel lines
and sill spoiler.
CAUTION: There is canister just behind Garage jack point rear. Jack up be carefully.
Board-On Lift
CAUTION: Make sure vehicle is empty when lifting.
— The board-on lift attachment (A) set at front end of vehicle should be set on the front of the sill
under the front door opening.
— Position attachments at front and rear ends of board-on lift.

Vehicle Lifting: Tools and Equipment
LIFTING POINT
Commercial Service Tools
Commercial Service Tools
CAUTION:
— Every time the vehicle is lifted up, maintain the complete vehicle curb condition.
— Since the vehicle’s center of gravity changes when removing main parts on the front side (engine,
transmission, suspension etc.), support a jack up point on the rear side garage jack with a mission
jack or equivalent.
— Since the vehicle’s center of gravity changes when removing main parts on the rear side (rear
axle, suspension, etc.), support a jack up point on the front side garage jack with a mission jack or
equivalent.
— Be careful not to smash or do not do anything that would affect piping parts.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Relays and
Modules — Wheels and Tires > Tire Pressure Monitor Receiver / Transponder > Component Information > Specifications

WT-96 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Sensors and
Switches — Wheels and Tires > Tire Pressure Sensor > Component Information > Service and Repair

Tire Pressure Sensor: Service and Repair
TRANSMITTER
WT-96 Exploded View
Removal and Installation
REMOVAL
1. Deflate tire. Unscrew transmitter retaining nut and allow transmitter to fall into tire.
2. Gently bounce tire so that transmitter falls to bottom of tire. Place on tire changing machine and
break both tire beads ensuring that the transmitter
remains at the bottom of the tire.
3. Turn tire so that valve hole is at bottom and bounce so that transmitter (1) is near valve hole.
Carefully lift tire onto turntable and position valve
hole (and transmitter) 270 degree from mounting/dismounting head (2).
4. Lubricate tire well and remove first side of the tire. Reach inside the tire and remove the
transmitter.
INSTALLATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Sensors and
Switches — Wheels and Tires > Tire Pressure Warning Reset Switch > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Low Tire Pressure Indicator > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Tire Pressure Monitor Receiver / Transponder > Component Information > Specifications

WT-96 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Tire Pressure Monitor Receiver / Transponder > Component Information > Specifications > Page 1508

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Tire Pressure Sensor > Component Information > Service and Repair

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Tire Pressure Sensor > Component Information > Service and Repair > Page 1512

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tire Monitoring
System > Tire Pressure Warning Reset Switch > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Tires >
Component Information > Technical Service Bulletins > Tires — Mounting Information/Precautions

Technical Service Bulletin # 11-022 Date: 110321
Tires — Mounting Information/Precautions
Classification: WT 11-004
Reference: ITB11-022
Date: March 21, 2011
TIRE MOUNTING INFORMATION
APPLIED VEHICLES: All Infiniti
SERVICE INFORMATION
^ When mounting tires to wheels it is important that the tire bead is seated correctly.
^ A tire bead that is not seated correctly may cause a vehicle vibration.
^ High performance tires and tires with shorter sidewalls (low aspect tires) may require more care
to make sure the tire bead is seated correctly.
^ Follow the Tire Mounting Tips in this bulletin.
Tire Mounting Tips:
NOTE:
These tips are not intended to be a complete instruction for mounting tires to wheels. Make sure to
read and follow the instruction for your specific tire service equipment.

1. Clean the tire bead with an approved rubber cleaning fluid.
^ Rubber cleaning fluid is a locally sourced common product used in the tire service process.
2. Clean the wheel (flange and bead seat area), see Figure 2. Make sure to clean off all rust and
corrosion.

3. Apply an approved tire lubricant to the tire and wheel in the areas shown in Figures 1 and 2.
^ Tire lubricant is a locally sourced common product used in the tire service process.
Tire:
^ Apply lube to the inner bead only, of both beads.
^ Do not apply lube to the flange area (outer bead area)
NOTE:
Too much tire lubricant may allow the tire to slip on the rim while driving. If this occurs, the tire may
become un-balanced.
Wheel:
^ Apply lube to the Safety Humps and Bead Sealing area.
^ Do not apply lube to the flange area.
4. Before inflating the tire:
^ If there are «match-mount» marks on the tire and rim, align the marks.

^ Make sure the tire is evenly positioned on the lower safety humps.
5. WARNING: Do not exceed the tire manufactures recommended bead seating inflation pressure.
Generally this is 40psi.
If the bead does not seat with the appropriate pressure:
a. Break down the tire/rim assembly.
b. Re-apply lubricant as shown in Figures 1 and 2 above.
c. Remount the tire.
6. After inflating the tires inspect the bead area.
^ Make sure bead is seated uniformly (the same) around the entire circumference of the wheel.
NOTE:
Many tires have Aligning Rings that will help confirm the bead is uniformly seated.
If uniform; bead is seated correctly.
If not uniform;
1. Break down the tire/rim assembly.
2. Re-apply lubricant as shown in Figures 1 and 2.
3. Remount the tire.

7. After the tire/wheel is balanced, apply an index mark to the tire at the location of the valve stem
(see Figure 6).
^ This index mark will allow you to tell if the tire has slipped on the rim (see Figure 7).
Tire to Rim Slippage:
^ Too much tire lubricant may allow the tire to slip on the rim while driving. If this occurs, the tire
may become un-balanced.
^ Overtime the tire lubricate will dry, eliminating the lubricant as a cause of tire slippage.
^ Some tire lubricants may require up to 24 hours to completely dry.
^ If slippage occurs, the tire/wheel will need to be re-balanced.

Tires: Technical Service Bulletins Tire Monitor System — Tire Pressure Information
Classification: WT08-004B
Reference: ITB08-015B
Date: January 25, 2011
TIRE PRESSURE INFORMATION FOR VEHICLES WITH TPMS
This bulletin has been amended. Information has been updated on each page. Please discard
previous versions of this bulletin.
APPLIED VEHICLES: All Infiniti vehicles with Tire Pressure Monitor System (TPMS)
SERVICE INFORMATION

The Low Tire Pressure Warning Lamp will illuminate (steady not flashing) if the tire pressure is low
in any of the four road tires.
^ This is not an indication of a malfunction. Rather it is a signal to the driver that the tire pressure in
the vehicle must be adjusted.
Tire pressure must be adjusted/corrected at or above the pressure shown on the TIRE AND
LOADING INFORMATION label before the Low Tire Pressure Warning Light will go OFF.
^ Regular tire pressure maintenance such as described in this bulletin is not covered under the
warranty.
The air pressure inside a tire can change due to several factors such as:
^ Seasonal temperature change
^ Tire temperature change due to driving
^ Natural pressure loss over time
Compensate for the above temperature factors when adjusting and setting tire pressure.
Each vehicle is equipped from the factory with a TIRE AND LOADING INFORMATION label.
This label lists the COLD tire pressure setting for the original tires on the specific vehicle.
NOTE: Tires are considered COLD after the vehicle has been parked for 3 or more hours or driven
less than 1 mile at moderate speeds.
When setting / adjusting tire pressure, make sure to use an accurate tire pressure gauge.
Use the following information for reference:

Temperature:
^ Tire pressure changes approximately 0.8 psi for every 10°F of temperature change. As
temperature decreases, pressure decreases.
^ Tire pressure may change 3 — 5 psi between a Cold reading and a reading taken just after the
vehicle has been driven for several miles.
^ Seasonal temperature change can result in tire pressure that is low enough to turn on the Low
Tire Pressure Warning Light.
Example 1 — Seasonal Temperature Change:
^ The temperature of the vehicle is 70°F after sitting in the shop.

^ Ambient temperature outside the shop is 30°F or will soon fall to 30°F due to seasonal change.
^ Recommended pressure on the TIRE AND LOADING INFORMATION label is 35 psi.
^ The tire pressure should be compensated an additional +3 psi and adjusted to 38 psi to avoid
dropping below the label value when the vehicle
experiences cooler ambient air temperature.
^ Compensation should also be used in the PDI process as needed.
Example 2 — WARM Tires:
^ A vehicle arrives to the dealer after being driven across town.
^ The WARM tire pressure reading is 32 psi.
^ Recommended COLD tire pressure on the TIRE AND LOADING INFORMATION label is 35 psi.
^ The tire pressure should be compensated an additional +3 psi and adjusted to 38 psi to avoid
dropping below the label value when the tires cool.
Natural tire pressure loss overtime:
^ Vehicle tire pressure can naturally decrease by approximately 1.0 — 1.5 psi per month. This will
vary due to seasonal temperature change.
^ After 6 to 8 months tire pressure may be low enough to turn ON the Low Tire Pressure Warning
Light.
High Altitude
^ At high altitude locations a standard tire pressure gauge may show the tire pressure higher than
the TPMS system. If the gauge reading is not
accounted for this could result in turning ON the Low Tire Pressure Warning Light.

^ Standard tire pressure gauge readings increase about 1.0 psi for every 2,200 ft of altitude
increase above sea level (up to 10,000 ft). See Graph 3.
^ For example if the TIRE AND LOADING INFORMATION label reads 33 psi then at an elevation
of 5,280 ft, the cold inflation pressure using a
gauge should be increased 2.5 psi to 35.5 psi.»
NOTE:
In the above example, C-III, Signal Tech II, or the vehicle information display (if equipped) would
show a tire pressure of 33 psi. If needed use C-III or Signal Tech-II to confirm tire pressure.
NOTE:
^ After correcting the tire pressure the vehicle may need to be driven at speeds above 16 mph to
activate the TPMS and turn off the low tire pressure
warning light.
^ If pressure compensation for temperature is used, the pressure should be re-checked and
adjusted at a later time when the tires are cold.
^ If after turning the ignition ON, the TPMS light flashes for one minute and then turns solid, refer to
ITB10-023 or ITB09-050.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Wheels >
Component Information > Technical Service Bulletins > Tires — Mounting Information/Precautions

Wheels: Testing and Inspection
ALUMINUM WHEEL
1. Check tires for wear and improper inflation. 2. Check wheels for deformation, cracks and other
damage. If deformed, remove wheel and check wheel runout. a. Remove tire from aluminum wheel
and mount on a tire balance machine.
b. Set dial indicator as shown in the figure. c. If the total runout value exceeds the limit, replace
aluminum wheel.
Lateral runout limit (A) Refer to WT-98, «Road Wheel». See: Specifications Vertical runout limit (B)
Refer to WT-98, «Road Wheel». See: Specifications

Wheels: Service and Repair
BALANCING WHEELS (BONDING WEIGHT TYPE)
Preparation Before Adjustment
Using releasing agent, remove double-faced adhesive tape from the road wheel.
CAUTION: ^
Be careful not scratch the road wheel during removal.
^ After removing double-faced adhesive tape, wipe clean traces of releasing agent from the road
wheel.
Wheel Balance Adjustment
^ If a tire balance machine has adhesion balance weight mode settings and drive-in weight mode
setting, select and adjust a drive-in weight mode suitable for road wheels.
1. Set road wheel on tire balance machine using the center hole as a guide. Start the tire balance
machine. 2. When inner and outer unbalance values are shown on the tire balance machine
indicator, multiply outer unbalance value by 5/3 to determine
balance weight that should be used. Select the outer balance weight with a value closest to the
calculated value above and install in to the designated outer position of, or at the designated angle
in relation to the road wheel.
CAUTION: ^
Do not install the inner balance weight before installing the outer balance weight.
^ Before installing the balance weight, be sure to clean the mating surface of the road wheel.
a. Indicated unbalance value x 5/3 = balance weight to be installed
Calculation example: 23 g (0.81 oz) x 5/3 = 38.33 g (1.35 oz) —> 37.5 g (1.32 oz) balance weight
(closer to calculated balance weight value)

NOTE: Note that balance weight value must be closer to the calculated balance weight value.
Example: 36.2 —> 35 g (1.23 oz) 36.3 —> 37.5 g (1.32 oz)
b. Installed balance weight in the position.

^ When installing balance weight (1) to road wheels, set it into the grooved area (A) on the inner
wall of the road wheel as shown in the figure so that the balance weight center (B) is aligned with
the tire balance machine indication position (angle)(C).
CAUTION: ^
Always use genuine NISSAN adhesion balance weights.
^ Balance weights are non-reusable; always replace with new ones.
^ Do not install more than three sheets of balance weight.
c. If calculated balance weight value exceeds 50 g (1.76 oz), install two balance weight sheets in
line with each other as shown in the figure.
CAUTION: Do not install one balance weight sheet on top another.
3. Start tire balance machine again. 4. Install drive-in balance weight on inner side of road wheel in
the tire balance machine indication position (angle).
CAUTION: Do not install more than two balance weight.
5. Start tire balance machine. Make sure that inner and outer residual unbalance values are 5 g
(0.17 oz) each or below. 6. If either residual unbalance value exceeds 5 g (0.17 oz), repeat
installation procedures.
TIRE ROTATION (for 18 inch wheel models)

^ Follow the maintenance schedule for tire rotation service intervals.
^ When installing the wheel, tighten wheel nuts to the specified torque.
CAUTION: ^
Do not include the T-type spare tire when rotating the tires.
^ When installing wheels, tighten them diagonally by dividing the work two to three times in order to
prevent the wheels from developing any distortion.
^ Be careful not to tighten wheel nut at torque exceeding the criteria for preventing strain of disc
rotor.
^ Use NISSAN genuine wheel nuts for aluminum wheels.
Wheel nuts tightening torque: Refer to WT-98, «Road Wheel». See: Specifications
^ Perform the ID registration, after tire rotation. Refer to WT-5, «ID REGISTRATION PROCEDURE:
Special Repair Requirement». See: Tire Monitoring System/Testing and Inspection/Programming
and Relearning/Transmitter ID Registration Procedure
TIRE ROTATION (for 19 inch wheel models)
^ Tire cannot be rotated in vehicle, as front tire are different size from rear tire and the direction of
wheel rotation is fixed in each tire. Wheel nuts tightening torque: Refer to WT-98, «Road Wheel».
See: Specifications
CAUTION: ^
Do not include the T-type spare tire when rotating the tires.
^ Use NISSAN genuine wheel nuts for aluminum wheels.
Safety Device Preventing from Being Incorrectly installed
FRONT BRAKE DISC ROTOR AND FRONT WHEEL
^ Front and rear wheel size for this model differs, therefore special pin (1) has been installed on the
front brake disc rotor (2). To accommodate this pin a hole (3) has been provided on the front wheel
(4) (the rear wheel does not have this hole.) and in some case the rear wheel is being mistakenly
installed on the front.
T-TYPE SPARE TIRE WHEEL

^ Regarding spare tire (for emergency) wheel, wrong assembly protection pin through hole (1) has
been set in addition to regular bolt holes (2) in order to enable installation to front wheel.
NOTE: Protection pin through hole of 18 inch spare wheel is non-through type.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Wheel Bearing >
Component Information > Technical Service Bulletins > Steering/Suspension — Wheel Bearing Collision Damage

Wheel Bearing: Technical Service Bulletins Steering/Suspension — Wheel Bearing Collision
Damage
Classification: FA10-007
Reference: ITB10-067
Date: October 21, 2010
WHEEL BEARING COLLISION DAMAGE
APPLIED VEHICLES: All Infiniti
SERVICE INFORMATION
Impacts to wheel bearings (such as a collision or other suspension damage) may create slight
indents in the bearing surfaces. These indents may not be visible but can cause bearing noise.
NOTE:
Hub/bearing replacement due to impact (collision or other suspension damage) is not a
warrantable repair.
If a vehicle has visible wheel or suspension damage due to impact (collision or other suspension
damage) it is recommended that the wheel bearing assembly be inspected as follows:
1. Remove the hub/bearing assembly from the vehicle.
2. Hold the hub/bearing assembly with both hands.
3. Rotate the hub/bearing assembly in both directions (clockwise and counterclockwise).

4. If any gritty or rough feeling is detected in the bearing replace it with a new one.

Wheel Bearing: Service and Repair
REAR WHEEL HUB AND HOUSING
RAX-7 Exploded View
Removal and Installation
REMOVAL
Wheel Hub and Bearing Assembly
1. Remove tire from vehicle with power tool. 2. Remove rear brake caliper with power tool. Hang it
in a place where it will not interfere with work.
CAUTION: Never depress brake pedal while brake caliper is removed.
3. Remove disc rotor.
CAUTION: ^
Put matching marks (A) on the wheel hub and bearing assembly and the disc rotor before removing
the disc rotor.
^ Never drop disc rotor.
4. Remove cotter pin, then loosen hub lock nut with a power tool.

5. Patch hub lock nut with a piece of wood. Hammer the wood to disengage wheel hub and bearing
assembly from drive shaft.
Take out the hub lock nut.
CAUTION: ^
Never place drive shaft joint at an extreme angle. Also be careful not to overextend slide joint.
^ Never allow drive shaft to hang down without support for counterpart such as joint sub-assembly,
and other parts.
NOTE: Use a suitable puller, if the wheel hub and bearing assembly and drive shaft cannot be
separated even after performing the above procedure.
6. Remove cotter pin, then loosen suspension arm mounting nut of axle housing. 7. Remove the
wheel hub and bearing assembly.
Axle Housing
1. Remove wheel hub and bearing assembly. 2. Remove parking brake shoe and parking brake
cable from back plate. 3. Remove mounting nuts in stabilizer side of stabilizer connecting rod with
power tool. 4. Remove axle side nuts and bolts on radius rod. 5. Remove coil spring. 6. Set suitable
jack under axle housing. 7. Remove mounting bolts and nuts in axle housing side of shock
absorber with power tool. 8. Remove axle side nuts and bolts on front lower link, separate front
lower link from axle housing. 9. Separate suspension arm from axle housing so as not to damage
ball joint boot using ball joint remover, and then remove axle housing from the
vehicle.
CAUTION: ^
Temporarily tighten nuts to prevent damage to threads and to prevent the ball joint remover from
coming off.
^ Never place drive shaft joint at an extreme angle. Also be careful not to overextend slide joint.
^ Never allow drive shaft to hang down without support for counterpart such as joint sub-assembly,
and other parts.
10. Remove anchor block mounting nuts, and then remove anchor block and back plate from axle
housing.
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Perform the final tightening of each of parts under unladen conditions, which were removed when
removing wheel hub and bearing assembly and steering knuckle.
CAUTION: ^
Never reuse cotter pin.
^ Align the matching marks (A) that have been made during removal when reusing the disc rotor.

^ Never drop disc rotor.
Inspection
INSPECTION AFTER REMOVAL
Wheel Hub and Bearing Assembly
Check the wheel hub and bearing assembly for wear, cracks, and damage. Replace if there are.
Axle Housing
Check the axle housing for wear, cracks, and damage. Replace if there are.
Ball Joint Inspection
Check for boot breakage, axial looseness, and torque of suspension arm ball joint. Refer to RSU-5,
«Inspection and Adjustment». See: Alignment/Service and Repair/Rear Suspension/Inspection and
Adjustment
INSPECTION AFTER INSTALLATION
^ Check wheel alignment. Refer to RSU-6, «Wheel Alignment Inspection». See: Alignment/Testing
and Inspection/Rear Suspension
^ Adjust neutral position of steering angle sensor after checking wheel alignment. Refer to BRC-8,
«ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION: Special Repair
Requirement».
^ Adjust parking brake operation (stroke). Refer to PB-3, «PEDAL TYPE: Inspection and
Adjustment». (pedal type), PB-4, «LEVER TYPE: Inspection and Adjustment» (lever type).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Wheel Hub >
Axle Nut > Component Information > Specifications

RAX-10 Exploded View (Part 1)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Wheels and Tires > Wheel Fastener
> Component Information > Technical Service Bulletins > Wheels/Tires — Accessory Wheel Lock Installation/Removal

Wheel Fastener: Technical Service Bulletins Wheels/Tires — Accessory Wheel Lock
Installation/Removal
Classification WT09-003
Reference ITB09-034
Date July 14, 2009
ACCESSORY WHEEL LOCKS INSTALLATION AND REMOVAL
APPLIED VEHICLES: All Infiniti
SERVICE INFORMATION
Always use hand tools when installing or removing accessory wheel locknuts.
WARNING:

Do not use power tools to install or remove accessory wheel lock nuts.
Use of an impact wrench or other power tool may cause permanent damage to the wheel lock nut
and/or key.
CLAIMS INFORMATION
Accessory wheel locks, wheel lock keys, or vehicle wheels that are damaged due to improper
installation or removal will not be considered a manufacturer defect and will not be covered under
warranty.
Accessory Wheel Lock Installation / Removal Guidelines
^ For ease of removal, the wheel lock nut should always be the first lug nut removed.
^ If needed, clean threads on lug studs with a wire brush.
^ The wheel lock nut should always be the last lug nut tightened.
^ Always use the special key supplied in the wheel lock set to install and remove the wheel locks.
^ Always tighten the wheel lock nuts using a hand torque wrench to the torque specification in the
Service Manual.
Disclaimer

Wheel Fastener: Specifications
Wheel Fastener
(for 18 inch wheel models)
^ Follow the maintenance schedule for tire rotation service intervals.
^ When installing the wheel, tighten wheel nuts to the specified torque.
CAUTION: ^
Do not include the T-type spare tire when rotating the tires.
^ When installing wheels, tighten them diagonally by dividing the work two to three times in order to
prevent the wheels from developing any distortion.
^ Be careful not to tighten wheel nut at torque exceeding the criteria for preventing strain of disc
rotor.
^ Use NISSAN genuine wheel nuts for aluminum wheels.
Wheel nuts tightening torque: Refer to WT-98, «Road Wheel». See: Wheels/Specifications
^ Perform the ID registration, after tire rotation. Refer to WT-5, «ID REGISTRATION PROCEDURE:
Special Repair Requirement». See: Tire Monitoring System/Testing and Inspection/Programming
and Relearning/Transmitter ID Registration Procedure
(for 19 inch wheel models)
^ Tire cannot be rotated in vehicle, as front tire are different size from rear tire and the direction of
wheel rotation is fixed in each tire. Wheel nuts tightening torque: Refer to WT-98, «Road Wheel».
See: Wheels/Specifications
CAUTION: ^
Do not include the T-type spare tire when rotating the tires.

^ Use NISSAN genuine wheel nuts for aluminum wheels.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Towing Information > System
Information > Technical Service Bulletins > Vehicle — Flat Towing Guideline

Towing Information: Technical Service Bulletins Vehicle — Flat Towing Guideline
Classification: GI99-002e
Reference: ITB99-014e
Date: August 8, 2008
LIMITATIONS ON FLAT TOWING OF INFINITI VEHICLES
This bulletin has been amended to apply to all current production models. Please discard all earlier
versions.
APPLIED VEHICLES: All Infiniti
APPLIED DATES: 1992-2009
SERVICE INFORMATION
This Bulletin contains important guidelines and limitations concerning towing of Infiniti vehicles with
all four wheels on the ground («flat towing»).
CAUTION:
Failure to follow these guidelines can result in severe transmission or drivetrain damage. For all
towing including «emergency towing» procedures refer to the Owners Manual.
1. 4WD/AWD vehicles equipped with Automatic Transmission:
^ DO NOT Flat Tow — doing so will damage internal transmission components.
^ DO NOT use a tow dolly — doing so will damage drivetrain components.
2. FWD vehicles equipped with Automatic Transmission:
^ DO NOT Flat Tow — doing so will damage internal transmission components.
^ An appropriate vehicle tow dolly MUST be placed under the vehicle’s front wheels.
^ Always follow the dolly manufacturer’s recommendations when using their product.
3. RWD vehicles equipped with Automatic Transmission:
^ DO NOT Flat Tow — doing so will damage internal transmission components.
^ An appropriate vehicle tow dolly MUST be placed under the vehicle’s rear wheels.
^ Always follow the dolly manufacturer’s recommendations when using their product.
4. 2WD vehicles equipped with a manual transmission:
^ Always flat tow with the manual transmission in Neutral.
^ Always flat tow a manual transmission vehicle facing forward.
^ Maximum speed while flat towing: 60 MPH.
^ After towing for 500 miles, stop. Start and idle the engine with the transmission in Neutral for two
minutes — failure to do so may cause damage to the transmission.

Disclaimer

Towing Information: Service and Repair
Tow Truck Towing
CAUTION:
— All applicable state or Provincial (in Canada) laws and local laws regarding the towing operation
must be obeyed.
— It is necessary to use proper towing equipment to avoid possible damage to the vehicle during
towing operation. Towing is in accordance with Towing Procedure Manual at dealer.
— Always attach safety chains before towing.
— When towing, make sure that the transmission, steering system and powertrain are in good order.
If any unit is damaged, dollies must be used.
— Never tow an automatic transmission model from the rear (that is backward) with four wheels on
the ground. This may cause serious and expensive damage to the transmission.
2WD MODELS
INFINITI recommends that vehicle be towed with the driving (rear) wheels off the ground or that a
dolly be used as illustrated.
CAUTION:
— Never tow automatic transmission models with the rear wheels on the ground or four wheels on
the ground (forward or backward), as this may cause serious and expensive damage to the
transmission. If it is necessary to tow the vehicle with the front wheels raised, always use towing
dollies under the rear wheels.
— When towing rear wheel drive models with the front wheels on the ground or on towing dollies: Turn the ignition key to the OFF position, and secure the steering wheel in a straight ahead position
with a rope or similar device.Never secure the steering wheel by turning the ignition key to the
LOCK position. This may damage the steering lock mechanism.
— Move the selector lever to the N (Neutral) position.
— When the battery of vehicle equipped with the Intelligent Key system is discharged, your vehicle
should be towed with the front wheels on towing dollies or place the vehicle on a flat bed truck.
If the speed or distance must necessarily be greater, remove the propeller shaft before towing to
prevent damage to the transmission.
Vehicle Recovery (Freeing a Stuck Vehicle)

FRONT
Securely install the vehicle recovery hook stored with jacking tools. Make sure that the hook is
properly secured in the stored place after use.
WARNING:
— Stand clear of a stuck vehicle.
— Do not spin your tires at high speed. This could cause them to explode and result in serious
injury. Parts of your vehicle could also overheat and be damaged.
CAUTION:
— Tow chains or cables must be attached only to the vehicle recovery hooks or main structural
members of the vehicle. Otherwise, the vehicle body will be damaged.
— Do not use the vehicle tie downs to free a vehicle stuck in sand, snow, mud, etc. Never tow the
vehicle using the vehicle tie downs or recovery hooks.
— Always pull the cable straight out from the front of the vehicle. Never pull on the hook at an angle.
— Pulling devices should be routed so they do not touch any part of the suspension, steering, brake
or cooling systems.
— Pulling devices such as ropes or canvas straps are not recommended for use in vehicle towing or
recovery.
REAR
WARNING:
— Rear hook is not available.
AUTOMATIC TRANSMISSION
To tow a vehicle equipped with an automatic transmission, an appropriate vehicle dolly MUST be
placed under the towed vehicle’s drive wheels. Always follow the dolly manufacture’s
recommendations when using their product. If the vehicle is stuck in sand, snow, mud, etc., use the
following procedure:
1. Turn off the Vehicle Dynamic Control System. 2. Make sure the area in front and behind the
vehicle is clear of obstructions. 3. Turn the steering wheel right and left to clear an area around the
front tires. 4. Slowly rock the vehicle forward and backward.
Shift back and forth between R (reverse) and D (drive). Apply the accelerator as little as possible to
maintain the rocking motion. Release the accelerator pedal before shifting between R and D. Do
not spin the tires above 35 mph (55 km/h).
5. If the vehicle can not be freed after a few tries, contact a professional towing service to remove
the vehicle.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Maintenance > Vehicle Lifting > Component
Information > Service and Repair

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Access
Cover, Engine > Component Information > Service and Repair

Access Cover: Service and Repair
ENGINE COVER
EM-24 Exploded View
1: Engine cover
Removal and Installation
REMOVAL
Remove engine cover with power tool.
CAUTION: Never damage or scratch engine cover when installing or removing.
INSTALLATION
Installation is the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Actuators
and Solenoids — Engine > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins >
Customer Interest for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise From Left
Bank Of Engine

Variable Valve Timing Actuator: Customer Interest Engine Controls — Ticking Noise From Left Bank
Of Engine
Classification: EC08-010B
Reference: ITB08-028B
Date: October 23, 2009
2008 G37 COUPE; NOISE FROM BANK 2 VVEL ACTUATOR
The ECM Part Number Table and ACTION have been amended. PARTS INFORMATION has been
deleted. Please discard all earlier versions of this bulletin.
APPLIED VEHICLE: 2008 G37 Coupe (CV36)
IF YOU CONFIRM:
A slight ticking / tapping / knocking noise coming from the Bank 2 (driver side) VVEL (Variable
Valve Event & Lift) actuator.
ACTION:
1. Refer to Step 2 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you
are working on.
2. If this bulletin applies; reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You
MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential
to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Actuators
and Solenoids — Engine > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine

Variable Valve Timing Actuator: All Technical Service Bulletins Engine Controls — Ticking Noise
From Left Bank Of Engine
Classification: EC08-010B
Reference: ITB08-028B
Date: October 23, 2009
2008 G37 COUPE; NOISE FROM BANK 2 VVEL ACTUATOR
The ECM Part Number Table and ACTION have been amended. PARTS INFORMATION has been
deleted. Please discard all earlier versions of this bulletin.
APPLIED VEHICLE: 2008 G37 Coupe (CV36)
IF YOU CONFIRM:
A slight ticking / tapping / knocking noise coming from the Bank 2 (driver side) VVEL (Variable
Valve Event & Lift) actuator.
ACTION:
1. Refer to Step 2 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you
are working on.
2. If this bulletin applies; reprogram the ECM.
CLAIMS INFORMATION
IMPORTANT:
The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You
MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential
to successfully completing this repair.
SERVICE PROCEDURE
1. Connect C-III to the vehicle to begin the reprogramming procedure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Actuators
and Solenoids — Engine > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 1594

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Actuators
and Solenoids — Engine > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 1595

Variable Valve Timing Actuator: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine >
Compression Check > System Information > Specifications

Compression Check: Testing and Inspection
COMPRESSION PRESSURE
Inspection
1. Warm up engine thoroughly. Then, stop it. 2. Release fuel pressure. Refer to EC-601,
«Inspection».
3. Disconnect fuel pump fuse (1) from IPDM E/R (2) to avoid fuel injection during measurement. 4.
Remove engine cover with power tool. 5. Remove ignition coil and spark plug from each cylinder.
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression gauge with an adapter (commercial service tool) onto spark plug hole.
^ Use the adapter whose picking up end inserted to spark plug hole is smaller than 20 mm (0.79 in)
in diameter. Otherwise, it may be caught by cylinder head during removal. a: 20 mm (0.79 in)
8. With accelerator pedal fully depressed, turn ignition switch to «START» for cranking. When the
gauge pointer stabilizes, read the compression
pressure and the engine rpm. Perform these steps to check each cylinder.
Compression pressure: Refer to EM-138, «General Specification». See: Specifications/Service
Limits and General Specifications/General Specifications
CAUTION: ^
Measure a six-cylinder under the same conditions since a measurement depends on measurement
conditions (engine water temperature, etc.).
^ Always use a fully changed battery to obtain the specified engine speed.
^ If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
^ If compression pressure is below the minimum value, check valve clearances and parts
associated with combustion chamber (valve, valve seat,

Camshaft Gear/Sprocket: Specifications
EM-48 Exploded View (Part 1)

EM-48 Exploded View (Part 2)

Camshaft: Specifications Service Limits and General Specifications

Camshaft: Service and Repair

CAMSHAFT
EM-83 Exploded View
CAUTION: As for replacement of parts on the intake side as shown in the exploded view, replace
VVEL ladder assembly & cylinder head assembly. (Single part replacement is not possible.)
NOTE: VVEL ladder assembly cannot be replaced as a single part, because it is machined
together with cylinder head assembly.

NOTE: The figure shows an example of bank 2.

Disassembly and Assembly
DISASSEMBLY
CAUTION: Never loosen adjusting bolts (A) and mounting bolts (black color) (B), of VVEL ladder
assembly. If loosened, the stroke of cam lift becomes out of adjustment. In such case, replacement
of VVEL ladder assembly and cylinder head assembly is required.
NOTE: VVEL ladder assembly cannot be replaced as a single part, because it is machined
together with cylinder head assembly.
1. Remove rocker covers (bank 1 and bank 2). 2. Remove VVEL actuator sub assembly as follows:
CAUTION: VVEL actuator sub assembly and VVEL control shaft position sensor are non reusable.
Never remove them unless they are required.
a. Remove VVEL control shaft position sensor. b. Turn control shaft to the large lift side and fix it in
order to prevent the interference of the stopper surface.
^ If control shaft cannot be moved, set crankshaft in position referring to the information below. (To
displace cam nose) Bank 1: Turn 120° from No. 1 cylinder at TDC Bank 2: No. 1 cylinder at TDC

c. Fix two flat areas (C) of control shaft with a wrench to remove mounting bolts of control shaft.
A: Bank 1 B: Bank 2 <—: Engine front
CAUTION: ^
During the operation, never allow a wrench to interfere with other parts.
^ Fix control shaft to prevent the interference of the stopper surface.
d. Remove actuator bracket (rear).
^ Loosen mounting bolts in the reverse order as shown in the figure. A: Bank 1 B: Bank 2 <—:
Engine front
e. Remove VVEL actuator sub assembly.
^ Loosen mounting bolts in the reverse order as shown in the figure.

A: Bank 2 B: Bank 1
CAUTION: ^
When removing, prepare wastes because oil spills.
^ When installing, be careful with VVEL actuator sub assembly (bank 2) mounting bolt No. 1
because its length is different.
3. Remove front timing chain case, camshaft sprockets, and timing chain. 4. Remove rear timing
chain case. 5. Remove VVEL ladder assembly.
^ Loosen mounting bolts (gold color) in the reverse order as shown in the figure. A: Bank 1 B: Bank
2 <—: Engine front
CAUTION: ^
Never loosen adjusting bolts and mounting bolts (black color).
^ When removing VVEL ladder assembly, hold the drive shaft from below so as not to drop it.
6. Remove camshaft (EXH). 7. Remove valve lifter.
^ Identify installation positions, and store them without mixing them up.
8. Remove timing chain tensioners (secondary) (1) from cylinder head.
A: Bank 1 B: Bank 2
^ Remove timing chain tensioners (secondary) with its stopper pin (C) attached.
NOTE: Stopper pin should be attached when timing chain (secondary) is removed.

9. Remove oil filter from cylinder head, if necessary.
ASSEMBLY
1. Install timing chain tensioners (secondary) (1) on both sides of cylinder head.
A: Bank 1 B: Bank 2
^ Install timing chain tensioner with its stopper pin (C) attached.
^ Install timing chain tensioner with sliding part facing downward on cylinder head (bank 1), and
with sliding part facing upward on cylinder head (bank 2).
2. Install oil filter (1), if removed.
^ Do not project from the cylinder head (2) surface.
3. Install valve lifter.
^ Install it in the original position.
4. Install camshaft (EXH).
^ Distinction between camshaft (EXH) (bank 1 and bank 2) is performed with the identification
mark.
5. Install VVEL ladder assembly as follows:

a. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the
cylinder head as shown in the figure.
A: Bank 1 B: Bank 2 C: 3.4 — 4.4 mm (0.134 — 0.173 in) dia <—: Engine front
Use Genuine RTV Silicone Sealant or equivalent.
b. Tighten mounting bolts in the following step, in numerical order as shown.
A: Bank 1 B: Bank 2 <—: Engine front
i. Tighten bolts in numerical order as shown. Torque: 1.96 Nm (0.20 kg-m, 1 ft-lb)
ii. Tighten bolts in numerical order as shown. Torque: 5.88 Nm (0.60 kg-m, 4 ft-lb)
iii. Tighten bolts in numerical order as shown. Torque: 10.4 Nm (1.1 kg-m, 8 ft-lb)

6. Measure difference in levels between front end faces of VVEL ladder assembly and cylinder
head.
Standard: -0.14 to 0.14 mm (-0.0055 to 0.0055 in)
^ Measure two positions (both intake and exhaust side) for a single bank.
^ If the measured value is out of the standard, re-install VVEL ladder assembly.
7. Install rear timing chain case. 8. Install camshaft sprockets and timing chains. 9. Install actuator
bracket (rear) as follows:
a. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the
actuator bracket (rear) as shown in the figure.
A: Bank 1 B: Bank 2 C: 3.4 — 4.4 mm (0.134 — 0.173 in) dia <—: Engine front
Use Genuine RTV Silicone Sealant or equivalent.
CAUTION: Never apply gasket to the oil passage.
b. Tighten mounting bolts in the following steps, in numerical order as shown.
A: Bank 1 B: Bank 2 <—: Engine front
i. Tighten bolts in numerical order as shown. Torque: 1.96 Nm (0.20 kg-m, 1 ft-lb)
ii. Tighten bolts in numerical order as shown. Torque: 5.88 Nm (0.60 kg-m, 4 ft-lb)
iii. Tighten bolts in numerical order as shown. Torque: 31.4 Nm (3.2 kg-m, 23 ft-lb)
10. Install new VVEL actuator sub assembly as follows:

CAUTION: Regarding replacement, because VVEL actuator sub assembly and VVEL control shaft
position sensor are controlled on a one-on-one basis, replace them as a set.
NOTE:
^ VVEL actuator arm (B), is factory-fixed at 5.5° from the small lift with a holding jig (A).
^ The holding jig is supplied in the new VVEL actuator sub assembly.
CAUTION:
^ Never disassemble VVEL actuator sub assembly. [Never loosen actuator motor mounting bolts
(A) shown in the figure]
^ Never shock VVEL actuator sub assembly.
a. Move control shaft to the position of small lift stopper.
^ The position where a part of the stopper of control shaft contacts VVEL ladder bracket. 1: VVEL
ladder assembly (bank 2) 2: VVEL ladder assembly (bank 1)

A: Stopper of control shaft <—: Small lift side
CAUTION: Be careful not to damage the stopper surface.
^ If control shaft cannot be moved, set crankshaft in position referring to the information below. (To
displace cam nose) Bank 1: Turn 120° from No. 1 cylinder at TDC Bank 2: No. 1 cylinder at TDC
b. Hold two flat areas of control shaft with a wrench, and rotate the control shaft (5.5° from the
stopper) to the large lift side. (This is for aligning
the bolt hole of control shaft and the hole of VVEL actuator arm.)
1: VVEL actuator sub assembly (bank 1) A: Control shaft b: 5.5 degrees <—: Large lift side
c. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the VVEL
actuator sub assembly as shown in the
figure.

1: VVEL actuator sub assembly (bank 2) 2: VVEL actuator sub assembly (bank 1) a: 4.0 — 5.6 mm
(0.157 — 0.220 in) b: 3.4 — 4.4 mm (0.134 — 0.173 in) dia.
Use Genuine RTV Silicone Sealant or equivalent.
CAUTION: Never apply gasket to the oil passage.
d. Install new VVEL actuator sub assembly.
^ Tighten mounting bolts in the following step, in numerical order as shown. A: Bank 2 B: Bank 1
CAUTION: ^
When installing, be careful with VVEL actuator sub assembly (bank 2) mounting bolt No. 1 because
its length is different.
^ Be sure to check that the VVEL actuator sub assembly is in contact with the cylinder head before
tightening the mounting bolts.
e. Remove holding jig. f.
Check that VVEL actuator arm bolt hole is aligned with control shaft tapped hole. If it is not aligned,
turn control shaft for alignment.
g. Fix two flat areas (C) of control shaft with a wrench to install mounting bolts of control shaft.
A: Bank 1 B: Bank 2 <—: Engine front
CAUTION: ^
During the operation, never allow a wrench to interfere with other parts.
^ Fix control shaft to prevent the interference of the stopper surface.

11. Install new VVEL control shaft position sensor as follows:
CAUTION: Regarding replacement, because VVEL actuator sub assembly and VVEL control shaft
position sensor are controlled on a one-on-one basis, replace them as a set.
a. Apply engine oil to O-ring or contact surface of O-ring.
b. Align matching marks (B), of VVEL control shaft position sensor and upper housing.
^ Face connector toward matching mark (A). C: Bank 2
c. Temporarily tighten bolt. d. Adjust VVEL control shaft position sensor after setting the engine
assembly in the vehicle. Refer to EC-21, «VVEL CONTROL SHAFT
POSITION SENSOR ADJUSTMENT: Description».
CAUTION: Be sure to adjust VVEL control shaft position sensor.
e. After adjusting VVEL control shaft position sensor, tighten bolts to the specified torque.
12. Inspect the valve clearance. Refer to EM-17, «Inspection and Adjustment». See: Cylinder Head
Assembly/Valve Clearance/Testing and Inspection 13. Install in the reverse order of removal after
this step.
Inspection
INSPECTION AFTER REMOVAL (EXHAUST SIDE)
Camshaft (EXH) Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft.

CAUTION: Never support No. 1 journal (on the side of camshaft sprocket) because it has a
different diameter from the other three locations.
2. Set a dial indicator vertically to No. 3 journal. 3. Turn camshaft (EXH) to one direction with
hands, and measure the camshaft runout on a dial indicator. (Total indicator reading)
Standard and limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
4. If it exceeds the limit, replace camshaft (EXH).
Camshaft (EXH) Cam Height
^ Measure the camshaft (EXH) cam height with a micrometer.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ If wear exceeds the limit, replace camshaft (EXH).
Camshaft (EXH) Journal Oil Clearance
CAMSHAFT (EXH) JOURNAL DIAMETER
^ Measure the outer diameter of camshaft (EXH) journal with a micrometer (A).
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
VVEL LADDER ASSEMBLY (EXH SIDE) INNER DIAMETER
^ Tighten VVEL ladder assembly bolts to the specified torque. Refer to «INSTALLATION» for the
tightening procedure.
^ Measure inner diameter (A) of VVEL ladder assembly (EXH side) with a bore gauge.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
CAMSHAFT (EXH) JOURNAL OIL CLEARANCE
^ (Oil clearance) = [VVEL ladder assembly (EXH side) inner diameter] — [Camshaft (EXH) journal
diameter].

Standard and limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ If the calculated value exceeds the limit, replace either or both camshaft (EXH) and VVEL ladder
assembly & cylinder head assembly.
NOTE: VVEL ladder assembly cannot be replaced as a single part, because it is machined
together with cylinder head assembly.
Camshaft (EXH) End Play
^ Install a dial indicator in thrust direction on front end of camshaft. Measure the end play of a dial
indicator when camshaft (EXH) is moved forward/backward (in direction of axis).
Standard and limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ Measure the following parts if out of the limit. ^
Dimension «A» for camshaft (EXH) No. 1 journal
Standard: 27.500 — 27.548 mm (1.0827 — 1.0846 in)
^ Dimension «B» for cylinder head No. 1 journal bearing
Standard: 27.360 — 27.385 mm (1.0772 — 1.0781 in)
^ Refer to the standards above, and then replace camshaft (EXH) and/or VVEL ladder assembly &
cylinder head assembly.
NOTE: Cylinder head assembly cannot be replaced as a single part, because it is machined
together with VVEL ladder assembly.
Camshaft Sprocket (EXH) Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft (EXH).
CAUTION: Never support No. 1 journal (on the side of camshaft sprocket) because it has a
different diameter from the other three locations.
2. Measure the camshaft sprocket (EXH) runout with a dial indicator. (Total indicator reading)
Limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General Specifications
3. If it exceeds the limit, replace camshaft sprocket (EXH).

Valve Lifter (EXH)
^ Check if surface of valve lifter has any wear or crack.
^ If wear or crack is found, replace valve lifter (EXH).
Valve Lifter Clearance (EXH)
VALVE LIFTER OUTER DIAMETER
^ Measure the outer diameter at 1/2 height of valve lifter with a micrometer (A) since valve lifter is
in barrel shape.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
VALVE LIFTER HOLE DIAMETER
^ Measure the inner diameter of valve lifter hole of cylinder head with an inside micrometer.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
VALVE LIFTER CLEARANCE
^ (Valve lifter clearance) = (Valve lifter hole diameter) — (Valve lifter outer diameter)
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ If the calculated value is out of the standard, referring to each standard of valve lifter outer
diameter and valve lifter hole diameter, replace either or both valve lifter and VVEL ladder assembly
& cylinder head assembly.
NOTE: Cylinder head assembly cannot be replaced as a single part, because it is machined
together with VVEL ladder assembly.
INSPECTION AFTER REMOVAL (INTAKE SIDE)
Drive Shaft End Play

^ Install a dial indicator in thrust direction on front end of drive shaft. Measure the end play of a dial
indicator when drive shaft is moved forward/backward (in direction of axis).
Standard and limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ Measure the following parts if out of the limit. ^
Dimension «A» for drive shaft No. 1 journal
Standard: 27.500 — 27.548 mm (1.0827 — 1.0846 in)
^ Dimension «B» for cylinder head No. 1 journal bearing
Standard: 27.360 — 27.385 mm (1.0772 — 1.0781 in)
^ If it exceeds the limit, replace VVEL ladder assembly & cylinder head assembly.
NOTE: Cylinder head assembly cannot be replaced as a single part, because it is machined
together with VVEL ladder assembly.
Camshaft Sprocket (INT) Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of drive shaft.
CAUTION: Never support No. 1 journal (on the side of camshaft sprocket) because it has a
different diameter from the other three locations.
2. Measure the camshaft sprocket (INT) runout with a dial indicator. (Total indicator reading)
Limit: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General Specifications
3. If it exceeds the limit, replace camshaft sprocket (INT).
Valve Lifter (INT)
^ Check if surface of valve lifter has any wear or crack.
^ If wear or crack is found, replace VVEL ladder assembly & cylinder head assembly.

NOTE: Since the valve lifter (INT) cannot be replaced by the piece, VVEL ladder assembly &
cylinder head assembly replacement are required.
Valve Lifter Clearance (INT)
VALVE LIFTER OUTER DIAMETER
^ Measure the outer diameter at 1/2 height of valve lifter (INT) with a micrometer (A) since valve
lifter is in barrel shape.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
VALVE LIFTER HOLE DIAMETER
^ Measure the inner diameter of valve lifter hole of cylinder head with an inside micrometer.
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
VALVE LIFTER CLEARANCE
^ (Valve lifter clearance) = (Valve lifter hole diameter) — (Valve lifter outer diameter)
Standard: Refer to EM-139, «Camshaft». See: Specifications/Service Limits and General
Specifications
^ If the calculated value is out of the standard, replace VVEL ladder assembly & cylinder head
assembly.
NOTE: Since the valve lifter (INT) cannot be replaced by the piece, VVEL ladder assembly &
cylinder head assembly replacement are required.
VVEL Ladder Assembly
DRIVE SHAFT OPERATIONAL CHECK
^ Hold the both ends of the drive shaft (A) and rotate it to check that it rotates smoothly.

CAUTION: Turn VVEL ladder assembly upside down to prevent the driveshaft from dropping off.
CONTROL SHAFT OPERATIONAL CHECK
^ Move control shaft (A) to the small stopper and large stopper to check that the control shaft
functions smoothly.
CAUTION: Turn VVEL ladder assembly upside down to prevent the drive shaft from dropping off.
RINK CHECK FOR BACK-LASH (BONDING)

^ Check that the link and the shaft of drive shaft and control shaft are not fixed.
^ Check this by moving drive shaft and control shaft in the axial and rotation directions.
^ If there is an unusualness related to the above three, replace VVEL ladder assembly & cylinder
head assembly.
NOTE: VVEL ladder assembly cannot be replaced as a single part, because it is machined
together with cylinder head assembly.
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION: ^
Perform this inspection only when DTC P0011 is detected in self-diagnostic results of CONSULT-III
and it is directed according to inspection procedure. Refer to EC-107, «Diagnosis Description».
^ Check when engine is cold to prevent burns from the splashing engine oil.
1. Check engine oil level. Refer to LU-6, «Inspection». See: Engine Lubrication/Engine Oil/Testing
and Inspection 2. Perform the following procedure to prevent the engine from being unintentionally
started while checking.
a. Release the fuel pressure. Refer to EC-601, «Inspection». b. Disconnect ignition coil and injector
harness connectors.
3. Remove intake valve timing control solenoid valve.

4. Crank engine, and then check that engine oil comes out from intake valve timing control solenoid
valve hole (A). End crank after checking.
1: Intake valve timing control cover (bank 1) <—: Engine front
WARNING: Be careful not to touch rotating parts (drive belt, idler pulley, and crankshaft pulley,
etc.).
CAUTION: ^
Prevent splashing by using a shop cloth to prevent the worker from injury from engine oil and to
prevent engine oil contamination.
^ Prevent splashing by using a shop cloth to prevent engine oil from being splashed to engine and
vehicle. Especially, be careful no to apply engine oil to rubber parts of drive belt, engine mounting
insulator, etc. Wipe engine oil off immediately if it is splashed.
5. Perform the following inspection if engine oil does not come out from intake valve timing control
solenoid valve oil hole of the cylinder head.
^ Remove oil filter, and then clean it.
^ Clean oil groove between oil strainer and intake valve timing control solenoid valve.
6. Remove components between intake valve timing control solenoid valve and camshaft sprocket
(INT), and then check each oil groove for
clogging. ^
Clean oil groove if necessary.
7. After inspection, install removed parts in the reverse order.
Inspection for Leakage
The following are procedures for checking fluid leakage, lubricant leakage. ^
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If any are less
than the required quantity, fill them to the specified level.
^ Follow the procedure below to check for fuel leakage. ^
Turn ignition switch to the «ON» position (with engine stopped). With fuel pressure applied to fuel
piping, check for fuel leakage at connection points.
^ Start engine. With engine speed increased, check again for fuel leakage at connection points.
^ Run engine to check for unusual noise and vibration.
NOTE: If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide
may generate a pounding noise during and just after the engine start. However, this does not
indicate a malfunction. The noise will stop after hydraulic pressure rises.
^ Warm up engine thoroughly to check that there is no leakage of fuel, or any oil/fluids including
engine oil and engine coolant.
^ Bleed air from lines and hoses of applicable lines, such as in cooling system.
^ After cooling down engine, again check oil/fluid levels including engine oil and engine coolant.
Refill them to the specified level, if necessary.

Lifter / Lash Adjuster: Specifications Available Valve Lifter

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Camshaft,
Lifters and Push Rods > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > Customer
Interest for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of
Engine

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Camshaft,
Lifters and Push Rods > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Camshaft,
Lifters and Push Rods > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 1651

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Camshaft,
Lifters and Push Rods > Variable Valve Timing Actuator > Component Information > Technical Service Bulletins > All
Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 1652

Variable Valve Timing Actuator: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Connecting Rod Bearing > Component Information > Specifications > Service Limits and General
Specifications

Connecting Rod Bearing: Specifications Service Limits and General Specifications

Connecting Rod Bearing: Specifications Tightening Torque and Sequence
Rod Bearing Cap

Tighten connecting rod bolt as follows: Inspect the outer diameter of connecting rod bolt. Apply
engine oil to the threads and seats of connecting rod bolts. Tighten connecting rod bolts. Torque ….
…………………………………………………………………………………………………………………………………………..
……………. 28.4 Nm (2.9 kg-m, 21 ft-lb) Completely loosen connecting rod bolts. Torque ………………
…………………………………………………………………………………………………………………………………………..
………… 0 Nm (0 kg-m, 0 ft-lb) Tighten connecting rod bolts. Torque …………………………………………..
……………………………………………………………………………………………………………….. 24.5 Nm (2.5
kg-m, 18 ft-lb)
Then turn connecting rod bolts 90° clockwise (angle tightening).
CAUTION: Always use the angle wrench [SST: KV10112100 (BT8653 A)] (A). Never make
judgment by visual inspection.
After tightening connecting rod bolts, check that crankshaft rotates smoothly. Check the connecting
rod side clearance. Refer to EM-143, «Cylinder Block». See: Connecting Rod/Specifications/Service
Limits and General Specifications
CONNECTING ROD BOLT OUTER DIAMETER
Measure the outer diameters [(a), (b) and (c)] at the position shown in the figure. a
………………………………………………………………………………………………………………………………………
Value at the end of the smaller diameter of the bolt b
……………………………………………………………………………………………………….. Value at the end of the
smaller diameter of the bolt [opposite side of (a)] c
………………………………………………………………………………………………………………………………. Value
of the smallest diameter of the smaller of the bolt Obtain a mean value (d) of (a) and (b). Subtract
(c) from (d). Limit [(d) — (c)] ……………………………………………………………………………………………………
………………………………………………………. 0.09 mm (0.0035 in) If it exceeds the limit (large difference
in dimensions), replace the bolt with new one.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
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Specifications

Connecting Rod: Specifications Service Limits and General Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Connecting Rod, Engine > Component Information > Specifications > Service Limits and General
Specifications > Page 1666

Connecting Rod: Specifications Tightening Torque and Sequence
Rod Bearing Cap

Tighten connecting rod bolt as follows: Inspect the outer diameter of connecting rod bolt. Apply
engine oil to the threads and seats of connecting rod bolts. Tighten connecting rod bolts. Torque ….
…………………………………………………………………………………………………………………………………………..
……………. 28.4 Nm (2.9 kg-m, 21 ft-lb) Completely loosen connecting rod bolts. Torque ………………
…………………………………………………………………………………………………………………………………………..
………… 0 Nm (0 kg-m, 0 ft-lb) Tighten connecting rod bolts. Torque …………………………………………..
……………………………………………………………………………………………………………….. 24.5 Nm (2.5
kg-m, 18 ft-lb)
Then turn connecting rod bolts 90° clockwise (angle tightening).
CAUTION: Always use the angle wrench [SST: KV10112100 (BT8653 A)] (A). Never make
judgment by visual inspection.
After tightening connecting rod bolts, check that crankshaft rotates smoothly. Check the connecting
rod side clearance. Refer to EM-143, «Cylinder Block». See: Service Limits and General
Specifications
CONNECTING ROD BOLT OUTER DIAMETER
Measure the outer diameters [(a), (b) and (c)] at the position shown in the figure. a
………………………………………………………………………………………………………………………………………
Value at the end of the smaller diameter of the bolt b
……………………………………………………………………………………………………….. Value at the end of the
smaller diameter of the bolt [opposite side of (a)] c
………………………………………………………………………………………………………………………………. Value
of the smallest diameter of the smaller of the bolt Obtain a mean value (d) of (a) and (b). Subtract
(c) from (d). Limit [(d) — (c)] ……………………………………………………………………………………………………
………………………………………………………. 0.09 mm (0.0035 in) If it exceeds the limit (large difference
in dimensions), replace the bolt with new one.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft Gear/Sprocket > Component Information > Specifications

Crankshaft Gear/Sprocket: Specifications
EM-48 Exploded View (Part 1)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft Gear/Sprocket > Component Information > Specifications > Page 1670

EM-48 Exploded View (Part 2)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft Main Bearing > Component Information > Specifications > Service Limits and General
Specifications

Crankshaft Main Bearing: Specifications Service Limits and General Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft Main Bearing > Component Information > Specifications > Service Limits and General
Specifications > Page 1675

Crankshaft Main Bearing: Specifications Tightening Torque and Sequence

Main Bearing Cap
Tighten lower cylinder block bolts (No. 17 to 26) in numerical order as shown in the figure. <—:
Engine front 2 ……………………………………………………………………………………………………………………..
……………………………………………… 25.0 Nm (2.6 kg-m, 18 ft-lb) Repeat step b. Tighten lower
cylinder block bolt (No. 1 to 16) in numerical order as shown in the figure.
NOTE: Use TORX socket for bolts No.1 to 16.
Torque ……………………………………………………………………………………………………………………………….
…………………………… 35.3 Nm (3.6 kg-m, 26 ft-lb) Turn lower cylinder block bolt (No. 1 to 16) 90°
clockwise (angle tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] (A) to check tightening angle. Never make
judgment by visual inspection.
After installing lower cylinder block bolts, check that crankshaft can be rotated smoothly by hand.
Check the crankshaft end play. Refer to EM-143, «Cylinder Block». See:
Crankshaft/Specifications/Crankshaft
LOWER CYLINDER BLOCK BOLT OUTER DIAMETER
Measure the outer diameters (c), (d) at two positions as shown in the figure. a ……………………………
…………………………………………………………………………………………………………………………………………..
…………….. 20 mm (0.79 in) b ………………………………………………………………………………………………..
…………………………………………………………………………………….. 30 mm (1.18 in) e ………………………..
…………………………………………………………………………………………………………………………………………..
………………… 10 mm (0.39 in)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
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Specifications > Page 1676

If reduction appears in (a) range, regard it (c). Limit [(d) — (c)] …………………………………………………….
……………………………………………………………………………………………………… 0.11 mm (0.0043 in) If it

exceeds the limit (large difference in dimensions), replace lower cylinder block bolt with new one.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft, Engine > Component Information > Specifications > Cylinder Block

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Crankshaft, Engine > Component Information > Specifications > Cylinder Block > Page 1681

Crankshaft: Specifications Crankshaft

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Harmonic Balancer — Crankshaft Pulley > Component Information > Specifications

Harmonic Balancer — Crankshaft Pulley: Specifications
Crankshaft Pulley
Tighten crankshaft pulley bolt. Torque ……………………………………………………………………………………
………………………………………………………………………. 44.1 Nm (4.5 kg-m, 33 ft-lb)
Tighten the bolt 90° (one mark) (b). Place a matching mark (A) on crankshaft pulley (2) aligning
with the matching (C) of crankshaft pulley bolt (1). Rotate crankshaft pulley in normal direction
(clockwise when viewed from front) to confirm it turns smoothly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Piston, Engine > Component Information > Specifications

Piston: Specifications
AVAILABLE PISTON
PISTON RING
PISTON PIN

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Block Assembly > Piston Ring, Engine > Component Information > Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Head Assembly > Valve Clearance > System Information > Specifications > Valve Lifter

Valve Clearance: Specifications Available Valve Lifter

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Head Assembly > Fuel Pressure Release > System Information > Service and Repair

Valve Cover: Service and Repair
IGNITION COIL, SPARK PLUG AND ROCKER COVER
EM-45 Exploded View
Removal and Installation
REMOVAL
1. Remove the following parts:

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Head Assembly > Valve Cover > Component Information > Service and Repair > Page 1711

Valve Seat: Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Cylinder
Head Assembly > Valve, Intake/Exhaust > Component Information > Specifications

Valve: Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Drive Belts,
Mounts, Brackets and Accessories > Drive Belt > Component Information > Technical Service Bulletins > Engine — Drive
Belt Noise Diagnostics

Drive Belt: Technical Service Bulletins Engine — Drive Belt Noise Diagnostics

Classification: EM09-014
Reference: ITB10-005
Date: January 12, 2010
DRIVE BELT SYSTEM NOISE DIAGNOSIS
APPLIED VEHICLES: All Infiniti
IF YOU CONFIRM
There is noise coming from the drive belt(s) or drive belt pulley(s)
ACTION
Use the flow chart in this bulletin to help diagnose and identify the source / cause of the noise.
CLAIMS INFORMATION
Refer to the current Infiniti Warranty Flat Rate Manual and use the indicated claims coding for any
repairs performed.

DRIVE BELT / PULLEY NOISE DIAGNOSIS FLOW CHART

Auto Tensioner Inspection (if equipped)

1. With the engine running at idle and the AC turned ON observe the pulley angular (side to side)
movement (see Example 1):
^ See above table for maximum movement specification.
^ Visual comparison of movement with a known good vehicle is recommended.
2. With the engine running at idle and the AC turned ON observe the pulley axial/lateral (back and
forth) movement (see Example 2):
^ Maximum movement specification is 1 mm.
^ Visual comparison of movement with a known good vehicle is recommended.

Idler Pulley / Manual Tensioner Inspection (if equipped)

Disclaimer

Drive Belt: Service and Repair
Removal and Installation
EM-12 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Drive Belts,
Mounts, Brackets and Accessories > Drive Belt Tensioner > Component Information > Service and Repair

Drive Belt Tensioner: Service and Repair
DRIVE BELT AUTO TENSIONER AND IDLER PULLEY
EM-25 Exploded View
Removal and Installation
Removal
1. Remove drive belt.
^ Keep auto-tensioner pulley arm locked after drive belt is removed.
2. Remove auto-tensioner and idler pulley.
^ Keep auto-tensioner pulley arm locked to install or remove auto-tensioner.
Installation
Installation is the reverse order of removal.
CAUTION: If there is damage greater than peeled paint, replace drive belt auto-tensioner.

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EM-67 Exploded View

Engine Oil Pressure: Testing and Inspection
OIL PRESSURE CHECK
WARNING: ^
Be careful not to get burn yourself, as engine oil may be hot.
^ Oil pressure check should be done in «Neutral position» (M/T models) or «Parking position» (A/T
models).

1. Check the engine oil level. Refer to LU-6, «Inspection». See: Engine Oil/Testing and Inspection 2.
Remove engine undercover with power tool.
3. Disconnect harness connector at oil pressure switch, and remove oil pressure switch using deep
socket (commercial service tool).
1: Oil pressure switch <—: Engine front
CAUTION: Never drop or shock oil pressure switch.
4. Install the oil pressure gauge [SST: ST25051001 (J25695-1)] (A) and hose [SST: ST25052000
(J25695-2)] (B). 5. Start the engine and warm it up to normal operating temperature. 6. Check the
engine oil pressure with engine running under no-load.
NOTE: When the engine oil temperature is low, the engine oil pressure becomes high.
Engine oil pressure: Refer to LU-15, «Engine Oil Pressure». See: Specifications
If difference is extreme, check engine oil passage and oil pump for engine oil leaks.
7. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch and the mating surface. b. Apply liquid
gasket and tighten oil pressure switch to the specification.
Use Genuine RTV Silicone Sealant or equivalent.
Tightening torque: Refer to EM-42, «Exploded View». See: Oil Pan/Service and Repair/Lower
c. After warming up engine, check there is no leakage of engine oil with running engine.

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Lubrication > Engine Oil > Component Information > Technical Service Bulletins > Customer Interest: > 10-048 > Jul > 10 >
Engine — Oil Level Is Too Low/Unusual Engine Noises

4. Reinsert the dip stick all the way.

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Oil: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual Engine Noises

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Lubrication > Engine Oil > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Engine
Oil: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual Engine Noises > Page 1768

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Oil: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual Engine Noises > Page 1769

4. Reinsert the dip stick all the way.

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Oil: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual Engine Noises > Page 1771

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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Lubrication > Engine Oil > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Engine
Oil: > 10-048 > Jul > 10 > Engine — Oil Level Is Too Low/Unusual Engine Noises > Page 1773

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Engine
Lubrication > Engine Oil > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Engine
Oil: > 08-039 > Aug > 08 > Engine — Engine Oil Recommendation

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Engine
Lubrication > Engine Oil > Component Information > Technical Service Bulletins > All Other Service Bulletins for Engine Oil:
> 08-039 > Aug > 08 > Engine — Engine Oil Recommendation

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Engine
Lubrication > Engine Oil > Component Information > Specifications > Capacity Specifications > Page 1785

Engine Oil: Service and Repair
Draining
WARNING: ^
Be careful not to get burn yourself, as engine oil may be hot.
^ Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct
skin contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand
cleaner as soon as possible.
1. Warm up the engine, and check for engine oil leakage from engine components. Refer to LU-6,
«Inspection». See: Testing and Inspection 2. Stop the engine and wait for 10 minutes. 3. Loosen oil
filler cap. 4. Remove undercover with power tool. 5. Remove drain plug and then drain engine oil.
Refilling
1. Install drain plug with new washer.
CAUTION: Be sure to clean drain plug and install with new washer.
Tightening torque: Refer to EM-42, «Exploded View». See: Oil Pan/Service and Repair/Lower
2. Refill with new engine oil.
Engine oil specification and viscosity: Refer to «Refilling»
Engine oil capacity: Refer to LU-15, «Periodical Maintenance Specification». See:
Specifications/Capacity Specifications
CAUTION: ^
When filling engine oil, do not pull out oil level gauge.
^ The refill capacity depends on the engine oil temperature and drain time. Use these specifications
for reference only.
^ Always use oil level gauge to determine the proper amount of engine oil in engine.
3. Warm up the engine and check area around drain plug and oil filter for engine oil leakage. 4.
Stop the engine and wait for 10 minutes. 5. Check the engine oil level. Refer to LU-6, «Inspection».
See: Testing and Inspection

Oil Cooler: Service and Repair
Removal and Installation
LU-10 Exploded View
REMOVAL
WARNING: Be careful not to get burn yourself, as engine oil and engine coolant may be hot.

NOTE: When removing oil cooler only, step 2 is unnecessary.
1. Remove engine undercover with power tool. 2. Drain engine coolant from radiator and cylinder
block.
NOTE: Perform this step when removing water pipes.
3. Disconnect water hoses from oil cooler.
^ When removing oil cooler only, pinching water hoses near oil cooler to prevent engine coolant
from spilling out.
^ Remaining engine coolant in piping will come out. Use a tray to collect it.
CAUTION:

^ Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
4. Using oil filter wrench [SST: KV10115801 (J38956)], remove oil filter.
CAUTION: Never spill engine oil on drive belts.
5. Remove connector bolt, and oil cooler.
CAUTION: Never spill engine oil to rubber parts such as drive belts and engine mounting insulator.
6. Remove water pipes, as necessary
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Check that no foreign objects are adhering to the installation planes of oil filter and oil cooler
bracket.
^ Align cutout on oil cooler with protrusion on oil pan side, and tighten connector bolt.
1: Oil cooler A: Engine right side B: Cutout C: Protrusion <—: Engine front
Inspection
INSPECTION AFTER REMOVAL
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing through engine coolant inlet. If
necessary, replace oil cooler.
Relief Valve
Check relief valve with the following procedure. ^

Press steel ball of relief valve using a clean plastic stick. Check that valve moves smoothly and
proper spring repulsion is felt.
^ Replace relief valve, if necessary, with the following procedure. ^
Remove the relief valve by prying using a screwdriver.
CAUTION: Be careful not to damage the mounting hole.
^ Press in the relief valve until it reaches a depth of 7 mm (0.28 in) from end surface of oil pan
(upper) using approximately 10 mm (0.39 in) diameter drift.
CAUTION: Carefully press in the relief valve by aligning its mounting hole side with the axle center
so as not to cause deformation.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and the engine coolant level and add engine oil and engine coolant.
Refer to LU-6, «Inspection» and CO-8,
«Inspection». See: Engine Oil/Testing and Inspection See: Cooling System/Testing and
Inspection/Initial Inspection and Diagnostic Overview
2. Start the engine, and check there is no leaks of engine oil or engine coolant.

3. Stop the engine and wait for 10 minutes. 4. Check the engine oil level and the engine coolant
level again. Refer to LU-6, «Inspection» and CO-8, «Inspection».
See: Engine Oil/Testing and Inspection See: Cooling System/Testing and Inspection/Initial
Inspection and Diagnostic Overview

Oil Filter: Service and Repair
Removal and Installation
REMOVAL
CAUTION: ^
Oil filter is provided with relief valve. Use genuine NISSAN oil filter or equivalent.
^ Be careful not to get burned when engine and engine oil may be hot.
^ When removing, prepare a shop cloth to absorb any engine oil leakage or spillage.
^ Never allow engine oil to adhere to drive belts.
^ Completely wipe off any engine oil that adheres to engine and vehicle.
1. Remove engine undercover with power tool.
2. Using oil filter wrench [SST: KV10115801 (J38956)] (A), remove oil filter.
<—: Engine front
INSTALLATION
1. Remove foreign materials adhering to oil filter installation surface
2. Apply engine oil to the oil seal contact surface of new oil filter.
3. Screw oil filter manually until it touches the installation surface, then tighten it by 2/3 turn (A). Or
tighten to the specification.
Oil filter: 17.7 Nm (1.8 kg-m, 13 ft-lb)
Inspection
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-6, «Inspection». See: Engine Oil/Testing and Inspection 2.
Start the engine, and check there is no leak of engine oil.

3. Stop the engine and wait for 10 minutes. 4. Check the engine oil level, and adjust the level.
Refer to LU-6, «Inspection». See: Engine Oil/Testing and Inspection

Oil Pan: Specifications

Oil Pan
Lower
EM-42 Exploded View

Tighten mounting bolts in numerical order as shown in the figure. <—: Engine front
Upper
EM-75 Exploded View

Tighten mounting bolts in numerical order as shown in the figure. <—: Engine front There are two
types of mounting bolts. Refer to the following for locating bolts. M8 x 90 mm (3.54 in) …………………
…………………………………………………………………………………………………………………………………………..
……. 7, 10, 13 M8 x 25 mm (0.98 in) ……………………………………………………………………………………….
………………………………………………………………. Except the above

Oil Pan: Service and Repair Lower

Removal and Installation
EM-42 Exploded View
REMOVAL
CAUTION: Drain engine oil when the engine is hot to avoid the danger of being scalded.
1. Remove engine undercover with power tool. 2. Remove oil pan (lower) as follows:

a. Loosen mounting bolts in reverse order as shown in the figure to remove.
<—: Engine front
b. Insert the seal cutter [SST: KV10111100 (J37228)] (A) between oil pan (upper) and oil pan
(lower).
CAUTION: ^
Be careful not to damage the mating surfaces.
^ Never insert a screwdriver. This damages the mating surfaces.
c. Slide the seal cutter by tapping on the side of tool with a hammer. Remove oil pan (lower).
INSTALLATION
1. Install oil pan (lower) as follows:
a. Use scraper (A) to remove old liquid gasket from mating surfaces.
^ Remove old liquid gasket from the bolt holes and thread.
CAUTION: Never scratch or damage the mating surfaces when cleaning off old liquid gasket.

b. Apply a continuous bead of liquid gasket with the tube presser (commercial service tool) (A) to
the oil pan (lower) as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent.
CAUTION: Attaching should be done within 5 minutes after coating.

b: 4.0 — 5.0 mm (0.157 — 0.197 in)
c. Install oil pan (lower).
^ Tighten mounting bolts in numerical order as shown in the figure. <—: Engine front
2. Install oil pan drain plug.
^ Refer to the figure of the components of on the prior page for installation direction of drain plug
washer.
3. Install in the reverse order of removal after this step.
NOTE: Wait at least 30 minutes after oil pan is installed before pouring engine oil.
Inspection
INSPECTION AFTER REMOVAL
Clean oil strainer if any object is attached.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and adjust engine oil. Refer to LU-6, «Inspection». See: Engine
Oil/Testing and Inspection 2. Start engine, and check there is no leakage of engine oil. 3. Stop
engine and wait for 10 minutes. 4. Check the engine oil level again. Refer to LU-6, «Inspection».
See: Engine Oil/Testing and Inspection

Oil Pan: Service and Repair Upper
OIL PAN (UPPER) AND OIL STRAINER

EM-75 Exploded View
Disassembly and Assembly
REMOVAL
CAUTION: Never drain engine oil when the engine is hot to avoid the danger of being scalded.
1. Remove oil level gauge, oil pressure switch and oil temperature sensor. 2. Remove oil pan
(lower).

3. Remove oil strainer. 4. Loosen mounting bolts in the reverse order as shown in the figure with
power tool to remove.
<—: Engine front
^ Insert the seal cutter [SST: KV10111100 (J37228)] between oil pan (upper) and lower cylinder
block. Slide seal cutter by tapping on the side of tool with a hammer. Remove oil pan (upper).
CAUTION: ^
Be careful not to damage the mating surfaces.
^ Never insert a screwdriver, because this damages the mating surfaces.
5. Remove O-rings (2) from bottom of lower cylinder block (1) and oil pump (3).
<—: Engine front
INSTALLATION
1. Install oil pan (upper) as follows:
a. Use a scraper (A) to remove old liquid gasket from mating surfaces.
CAUTION: Never scratch or damage the mating surfaces when cleaning off old liquid gasket.
^ Also remove old liquid gasket from mating surface of lower cylinder block.
^ Remove old liquid gasket from the bolt holes and threads.

b. Install new O-rings (2) on the bottom of lower cylinder block (1) and oil pump (3).
<—: Engine front
c. Apply a continuous bead of liquid gasket with the tube presser (commercial service tool) to the
cylinder block mating surface of oil pan
(upper) to a limited portion as shown in the figure.
a: 4.0 — 5.0 mm (0.157 — 0.197 in) <—: Engine front
Use Genuine RTV Silicone Sealant or equivalent.
CAUTION: ^
For bolt holes with [triangle] marks (7 locations), apply liquid gasket outside the holes.
^ Attaching should be done within 5 minutes after coating.
d. Install oil pan (upper).
CAUTION: Never misalign both O-rings during installation.
^ Tighten mounting bolts in numerical order as shown in the figure. <—: Engine front
^ There are two types of mounting bolts. Refer to the following for locating bolts. M8 x 90 mm (3.54
in): 7, 10, 13 M8 x 25 mm (0.98 in): Except the above
2. Install oil strainer to oil pump. 3. Install oil pan (lower). 4. Install oil pan drain plug.
^ Refer to the figure of components on the prior page for installation direction of drain plug washer.
5. Install in the reverse order of removal after this step.
NOTE:

Wait at least 30 minutes after oil pan is installed before pouring engine oil.
Inspection
INSPECTION AFTER REMOVAL
Clean oil strainer if any object is attached.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and adjust engine oil. Refer to LU-6, «Inspection». See: Engine
Oil/Testing and Inspection 2. Start engine, and check there is no leakage of engine oil. 3. Stop
engine and wait for 10 minutes. 4. Check the engine oil level again. Refer to LU-6, «Inspection».
See: Engine Oil/Testing and Inspection

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Engine
Lubrication > Oil Pump, Engine > Engine Oil Pressure > Component Information > Specifications > Page 1818

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Intake
Manifold > Component Information > Specifications > Service Limits and General Specifications

Intake Manifold: Specifications Tightening Torque and Sequence
Intake Manifold
If stud bolts were removed, install them and tighten to the torque specified below. Torque ……………
…………………………………………………………………………………………………………………………………………..
……. 10.8 Nm (1.1 kg-m, 8 ft-lb)
Tighten all mounting bolts to the specified torque in two or more steps in numerical order as shown
in the figure. <—: Engine front
CAUTION: Install intake manifold with the marks (put on the intake manifold and the cylinder head
before removal) aligned. Tighten mounting bolts from the outside of manifold to the inside. 1st step
…………………………………………………………………………………………………………………………………………..
…………………. 7.4 Nm (0.75 kg-m, 5 ft-lb) 2nd step and after ……………………………………………………..
………………………………………………………………………………………. 25.5 Nm (2.6 kg-m, 19 ft-lb)

Intake Manifold: Service and Repair Intake Manifold Collector
Removal and Installation
EM-28 Exploded View

REMOVAL
WARNING: Never drain engine coolant when the engine is hot to avoid the danger of being
scalded.
1. Remove engine cover with power tool. 2. Remove air cleaner case and air duct (RH and LH). 3.
Remove electric throttle control actuator as follows:
a. Drain engine coolant. When water hoses are disconnected, attach plug to prevent engine
coolant leakage.
CAUTION: ^
Perform this step when engine is cold.
^ Never spill engine coolant on drive belt.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Intake
Manifold > Component Information > Service and Repair > Intake Manifold Collector > Page 1826

b. Disconnect water hoses from electric throttle control actuator. When engine coolant is not
drained from radiator, attach plug to water hoses to
prevent engine coolant leakage.
c. Disconnect harness connector.
d. Loosen mounting bolts in reverse order as shown in the figure.
NOTE: ^
When removing only intake manifold collector, move electric throttle control actuator without
disconnecting the water hose.
^ The figure shows the electric throttle control actuator (bank 1) viewed from the air duct side.
^ Viewed from the air duct side, the order of loosening mounting bolts of electric throttle control
actuator (bank 2) is the same as that of the electric throttle control actuator (bank 1).
CAUTION: Handle carefully to avoid any shock to electric throttle control actuator.
4. Disconnect vacuum hose, PCV hose and EVAP hose from intake manifold collector. 5. Remove
EVAP canister purge volume control solenoid valve and EVAP tube assembly from intake manifold
collector.
6. Loosen mounting bolts and nuts with power tool in the reverse order as shown in the figure to
remove intake manifold collector.
<—: Engine front
INSTALLATION
Note the following, and install in the reverse order of removal.
INTAKE MANIFOLD COLLECTOR
^ If stud bolts were removed, install them and tighten to the torque specified below.
Torque: 10.8 Nm (1.1 kg-m, 8 ft-lb)
^ Tighten mounting bolts and nuts in numerical order as shown in the figure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Intake
Manifold > Component Information > Service and Repair > Intake Manifold Collector > Page 1827

<—: Engine front
WATER HOSE
^ Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
^ Clamp hose at location of 3 to 7 mm (0.12 to 0.28 in) from hose end.
ELECTRIC THROTTLE CONTROL ACTUATOR (BANK 1 AND BANK 2)
^ Tighten in numerical order as shown in the figure.
NOTE: ^
The figure shows the electric throttle control actuator (bank 1) viewed from the air duct side.
^ Viewed from the air duct side, the order of tightening mounting bolts of electric throttle control
actuator (bank 2) is the same as that of the electric throttle control actuator (bank 1).
^ Perform the «Throttle Valve Closed Position Learning» when harness connector of electric throttle
control actuator is disconnected. Refer to EC-18, «THROTTLE VALVE CLOSED POSITION
LEARNING: Description».
^ Perform the «Idle Air Volume Learning» and «Throttle Valve Closed Position Learning» when
electric throttle control actuator is replaced. Refer to EC-19, «IDLE AIR VOLUME LEARNING:
Description» and EC-18, «THROTTLE VALVE CLOSED POSITION LEARNING: Description».

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Intake
Manifold > Component Information > Service and Repair > Intake Manifold Collector > Page 1828

Intake Manifold: Service and Repair Intake Manifold
Removal and Installation
EM-31 Exploded View
REMOVAL

1. Release fuel pressure. 2. Remove intake manifold collector. 3. Remove fuel tube and fuel
injector assembly.
4. Loosen mounting bolts in reverse order as shown in the figure to remove intake manifold with
power tool.
<—: Engine front
CAUTION: ^
Cover engine openings to avoid entry of foreign materials.
^ Put a mark on the intake manifold and the cylinder head with paint before removal because they
need to be installed in the specified direction.
^ Loosen mounting bolts from the inside of manifold to the outside.
5. Remove gaskets.
INSTALLATION
Note the following, and install in the reverse order of removal.
INTAKE MANIFOLD
^ If stud bolts were removed, install them and tighten to the torque specified below.
Torque: 10.8 Nm (1.1 kg-m, 8 ft-lb)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Intake
Manifold > Component Information > Service and Repair > Intake Manifold Collector > Page 1829

^ Tighten all mounting bolts to the specified torque in two or more steps in numerical order as
shown in the figure.
<—: Engine front
CAUTION: ^
Install intake manifold with the marks (put on the intake manifold and the cylinder head before
removal) aligned.
^ Tighten mounting bolts from the outside of manifold to the inside. 1st step: 7.4 Nm (0.75 kg-m, 5
ft-lb) 2nd step and after: 25.5 Nm (2.6 kg-m, 19 ft-lb)
Inspection
INSPECTION AFTER REMOVAL
Surface Distortion
^ Check the surface distortion of the intake manifold mating surface with a straightedge (A) and a
feeler gauge (B).
Limit: Refer to EM-139, «Intake Manifold». See: Specifications/Service Limits and General
Specifications
^ If it exceeds the limit, replace intake manifold.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Seals and
Gaskets, Engine > Crankshaft Main Bearing Seal > Component Information > Service and Repair

Crankshaft Main Bearing Seal: Service and Repair
REAR OIL SEAL: Removal and Installation
REMOVAL
1. Remove transmission assembly. 2. Remove drive plate (A/T models) or flywheel (M/T models).
3. Remove rear oil seal with a suitable tool.
CAUTION:
Be careful not to damage crankshaft and cylinder block.
INSTALLATION
1. Install rear oil seal.
^ Install rear oil seal so that each seal lip is oriented as shown in the figure. A: Oil seal lip B: Dust
seal lip <—: Engine inside <—: Engine outside
^ Press in rear oil seal (1) to the position as shown in the figure.
B: Cylinder block rear end face a: 0 — 0.5 mm (0 — 0.020 in)

^ Using a suitable drift (A), press-fit until the height of rear oil seal is level with the mounting
surface. ^
Suitable drift: outer diameter 100 mm (3.94 in), inner diameter 85 mm (3.35 in).
CAUTION: ^
Be careful not to damage crankshaft and cylinder block.
^ Press-fit straight and avoid causing burrs or tilting oil seal.
2. Install in the reverse order of removal after this step.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Seals and
Gaskets, Engine > Front Crankshaft Seal > Component Information > Service and Repair

Front Crankshaft Seal: Service and Repair
FRONT OIL SEAL: Removal and Installation
REMOVAL
1. Remove the following parts:
^ Engine undercover with power tool.
^ Drive belts
^ Crankshaft pulley
2. Remove front oil seal using a suitable tool.
CAUTION: Be careful not to damage front timing chain case and crankshaft.
INSTALLATION
1. Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal. 2. Install front oil
seal.
^ Install front oil seal so that each seal lip is oriented as shown in the figure. A: Oil seal lip B: Dust
seal lip <—: Engine inside <—: Engine outside
^ Using a suitable drift, press-fit until the height of front oil seal is level with the mounting surface. ^
Suitable drift: outer diameter 60 mm (2.36 in), inner diameter 50 mm (1.97 in).
^ Check that the garter spring is in position and seal lips are not inverted.
CAUTION: ^
Be careful not to damage front timing chain case and crankshaft.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Seals and
Gaskets, Engine > Front Crankshaft Seal > Component Information > Service and Repair > Page 1838

^ Press-fit straight and avoid causing burrs or tilting oil seal.
3. Install in the reverse order of removal after this step.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Seals and
Gaskets, Engine > Valve Guide Seal > Component Information > Service and Repair

Valve Guide Seal: Service and Repair
VALVE OIL SEAL (EXH): Removal and Installation
REMOVAL
NOTE: Since the valve oil seal (INT) cannot be replaced by the piece, VVEL ladder assembly &
cylinder head assembly replacement is required.
1. Remove camshaft (EXH) and VVEL ladder assembly. 2. Remove valve lifter (EXH). 3. Turn
crankshaft until the cylinder requiring new oil seal (EXH) is at TDC. This prevents valve from
dropping into cylinder. 4. Remove valve collet (EXH).
^ Compress valve spring (EXH) with the valve spring compressor [SST: KV10116200 (J26336-A)]
(A), the attachment [SST: KV10115900 (J26336-20)] (C), and the adapter [SST: KV10109220 ( — )]
(B). Remove valve collet (EXH) with a magnet hand.
CAUTION: When working, be careful not to damage valve lifter holes.
5. Remove valve spring retainer (EXH) and valve spring (EXH).
6. Remove valve oil seal (EXH) using the valve oil seal puller [SST: KV10107902 (J38959)] (A).
INSTALLATION
1. Apply new engine oil on new valve oil seal (EXH) joint and seal lip.
2. Using the valve oil seal drift [SST: KV10115600 (J38958)] (A), press fit valve seal (EXH) to
height (b) shown in figure.
NOTE:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Seals and
Gaskets, Engine > Valve Guide Seal > Component Information > Service and Repair > Page 1842

Dimension: Height measured before valve spring seat (EXH) installation
Height (b): 14.3 — 14.9 mm (0.563 — 0.587 in)
3. Install in the reverse order of removal after this step.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Sensors
and Switches — Engine > Oil Pressure Switch (For Fuel Pump) > Component Information > Locations

Camshaft Gear/Sprocket: Specifications
EM-48 Exploded View (Part 1)

EM-48 Exploded View (Part 2)

Crankshaft Gear/Sprocket: Specifications
EM-48 Exploded View (Part 1)

EM-48 Exploded View (Part 2)

Timing Chain: Service and Repair
Removal and Installation
EM-48 Exploded View (Part 1)

EM-48 Exploded View (Part 2)
REMOVAL
1. Release the fuel pressure. Refer to EC-601, «Inspection». 2. Disconnect the battery cable from
the negative terminal. 3. Remove engine cover with power tool. 4. Remove radiator reservoir tank.
5. Remove air duct and air cleaner case assembly (RH and LH). 6. Remove engine undercover
with power tool. 7. Drain engine coolant from radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belt.
8. Remove radiator hose (upper and lower). 9. Drain engine oil.
CAUTION: Perform this step when the engine is cold.
10. Remove radiator cooling fan assembly. 11. Remove drive belt. 12. Separate engine harnesses
by removing their brackets from front timing chain case. 13. Remove oil cooler tube. 14. Remove
intake manifold collector. 15. Remove fuel sub tube mounting bolt. 16. Remove oil level gauge and
oil level gauge guide. 17. Remove A/C compressor from bracket with piping connected, and
temporarily secure it aside. 18. Remove power steering oil pump from bracket with piping
connected, and temporarily secure it aside. 19. Remove power steering oil pump bracket. 20.
Remove idler pulley, drive belt auto-tensioner and bracket. 21. Remove alternator and alternator
bracket. 22. Remove water pipe.

23. Remove camshaft position sensor (PHASE).
A: Keep free from magnetic materials
CAUTION: ^
Handle carefully to avoid dropping and shocks.
^ Never disassemble.
^ Never allow metal powder to adhere to magnetic part at sensor tip.
^ Never place sensors in a location where they are exposed to magnetism.
24. Remove intake valve timing control covers and gasket as follows:
a. Disconnect intake valve timing control solenoid valve harness connector.
b. Loosen mounting bolts in reverse order as shown in the figure.
A: Bank 1 B: Bank 2 C: Dowel pin hole
CAUTION: Shaft is internally jointed with camshaft sprocket (INT) center hole. When removing,
keep it horizontal until it is completely disconnected.
c. Shaft is engaged with camshaft sprocket (INT) center hole on inside. Pull straight out so that it
does not tilt until the joint is disengaged.
25. Remove intake valve timing control solenoid valve, if necessary.
CAUTION: Intake valve timing control solenoid valve is non reusable. Never remove it unless
required.
26. Remove rocker covers (bank 1 and bank 2). 27. Obtain No.1 cylinder at TDC of its compression
stroke as follows:
a. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing
indicator.
<—: Timing mark (grooved line without color)

b. Check that exhaust cam noses on No.1 cylinder (engine front side of bank 1) is located as
shown in the figure.
1: Camshaft (EXH) (bank 1) <—: Engine front
^ If not, turn crankshaft one revolution (360 degrees) and align as shown in the figure.
28. Remove crankshaft pulley as follows:
a. Remove rear cover plate and set the ring gear stopper [SST: KV10118600 (J-48641)] (A) as
shown in the figure.
1: Oil pan (upper) 2: Flywheel (M/T models) or drive plate (A/T models) <—: Vehicle front
b. Loosen crankshaft pulley bolt and rotate bolt seating surface at 10 mm (0.39 in) from its original
position.
1: Crankshaft pulley
CAUTION: Never remove crankshaft pulley bolt because it is used as a supporting point for
suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull crankshaft pulley through.

CAUTION: Never put suitable puller tab on crankshaft pulley periphery, because this damages
internal damper.
29. Remove oil pan (lower).
30. Loosen two mounting bolts in front of oil pan (upper) with power tool in reverse order as shown
in the figure.
<—: Engine front
31. Remove front timing chain case as follows:
a. Loosen mounting bolts in reverse order as shown in the figure.
b. Insert a suitable tool (A) into the notch at the top of front timing chain case as shown. c. Pry off
case by moving the suitable tool as shown.
^ Use the seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal.
CAUTION: ^
Never use a screwdriver or a similar item.
^ After removal, handle front timing chain case carefully so it does not tilt, cant, or warp under a
load.

32. Remove front oil seal from front timing chain case using a suitable tool.
^ Use a screwdriver for removal.
CAUTION: Be careful not to damage front timing chain case.
33. Remove O-ring (1) from rear timing chain case.
A: Bank 1 B: Bank 2
34. Remove timing chain tensioner (primary) as follows:
a. Remove lower mounting bolt (1). b. Loosen upper mounting bolt (2) slowly, and then turn timing
chain tensioner (primary) (3) on the upper mounting bolt so that plunger (4) is
fully expanded.
NOTE: Even if plunger is fully expanded, it does not drop from the body of timing chain tensioner
(primary).
c. Remove upper mounting bolt, and then remove timing chain tensioner (primary).

35. Remove internal chain guide (1), slack guide (2) and tension guide (3). 36. Remove timing
chain (primary) and crankshaft sprocket.
CAUTION: After removing timing chain (primary), never turn crankshaft and camshaft separately,
or valves strike the piston heads.
37. Remove timing chain (secondary) and camshaft sprockets as follows:
a. Attach suitable stopper pin (C) to the timing chain tensioners (secondary) (1), (2).
A: Bank 1 B: Bank 2
NOTE: ^
Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a stopper pin.
^ For removal of timing chain tensioners (secondary), refer to EM-83, «Exploded View». See:
Camshaft, Lifters and Push Rods/Camshaft/Service and Repair (Removing VVEL ladder assembly
is required.)
b. Remove camshaft sprocket (EXH) mounting bolt.
^ Secure the hexagonal portion of camshaft (EXH) using a wrench to loosen mounting bolt.
CAUTION: Never loosen the mounting bolt by securing anything other than the camshaft (EXH)
hexagonal portion or with tensioning the timing chain.
c. Remove camshaft sprocket (INT) mounting bolt.

^ Secure the hexagonal portion (located in between journal No. 1 and journal No. 2) of drive shaft
(A) using a wrench to loosen mounting bolt. 1: Camshaft (EXH) (bank 2) <—: Engine front
CAUTION: ^ Never loosen the mounting bolt by securing anything other than the drive shaft
hexagonal portion or with tensioning the timing
chain.
^ When holding the hexagonal part of drive shaft on the intake side with a wrench, be careful not to
allow the wrench to cause
interference with other parts.
^ Never disassemble camshaft sprocket (INT). [Never loosen bolts (A) as shown in the figure.]
d. Remove timing chain (secondary) together with camshaft sprockets.
38. Use a scraper to remove all traces of old liquid gasket from front and rear timing chain cases
and oil pan (upper), and liquid gasket mating
surfaces.
CAUTION: Be careful not to allow gasket fragments to enter oil pan.

39. Remove old liquid gasket from bolt hole and thread.
A: Remove old liquid gasket that is stuck B: Bolt hole
INSTALLATION
NOTE: The figure below shows the relationship between the matching mark on each timing chain
and that on the corresponding sprocket with the components installed.

1. Check that dowel pin (A) and crankshaft key (1) are located as shown in the figure. (No. 1
cylinder at compression TDC)
NOTE: Though camshaft does not stop at the position as shown in the figure, for the placement of
cam noses, it is generally accepted that camshaft is placed in the same direction as that of the
figure.
Camshaft dowel pin: At cylinder head upper face side in each bank. Crankshaft key: At cylinder
head side of bank 1.
2. Install timing chains (secondary) and camshaft sprockets as follows:
CAUTION: Matching marks between timing chain and sprockets slip easily. Confirm all matching
mark positions repeatedly during the installation process.
a. Push plunger of timing chain tensioner (secondary) and keep it pressed in with a stopper pin (A).
b. Install timing chains (secondary) and camshaft sprockets.
NOTE:

Figure shows bank 1 (rear view).
A: Camshaft sprocket (INT) back face B: Orange link C: Dowel groove D: Matching mark (oval) E:
Matching mark (2 oval: on front face) F: Matching mark (circle) G: Camshaft sprocket (EXH) back
face H: Matching mark (2 circle: on front face) I: Timing chain (secondary)
^ Align the matching marks on timing chain (secondary) (orange link) with the ones on intake and
exhaust camshaft sprockets (punched), and install them.

NOTE: ^ Matching marks for camshaft sprockets (INT) are on the back side of camshaft sprockets
(secondary). ^ There are two types of matching marks, the circle and oval types. They should be
used for the bank 1 and bank 2, respectively.
Bank 1: Use circle type Bank 2: Use oval type
^ Align dowel pin camshafts with the pin groove on sprockets, and install them.
^ In case that positions of each matching mark and each dowel pin do not fit with matching parts,
make fine adjustment to the position holding the hexagonal portion on camshaft (EXH) or drive
shaft with wrench or equivalent tool.
^ Mounting bolts for camshaft sprockets must be tightened in the next step. Tightening them by
hand is sufficient to prevent the dislocation of dowel pins.
^ It may be difficult to visually check the dislocation of matching marks during and after installation.
To make the matching easier, make a matching mark on the top of sprocket teeth and its extended
line in advance with paint. A: Matching mark (painted) B: Matching mark (orange link)
c. Tighten camshaft sprocket (EXH) mounting bolt.
^ Secure camshaft (EXH) using a wrench at the hexagonal portion to tighten mounting bolt.
d. After confirming the matching marks are aligned, tighten camshaft sprocket (INT) mounting bolt.
^ Secure the hexagonal portion (located in between journal No. 1 and journal No. 2) of drive shaft
(A) using a wrench to tighten mounting bolt. 1: Camshaft (EXH) (bank 2) <—: Engine front
CAUTION: When holding the hexagonal part of drive shaft on the intake side with a wrench, be
careful not to allow the wrench to cause interference with other parts.

e. Pull stopper pins (C) out from timing chain tensioners (secondary) (1), (2).
A: Bank 1 B: Bank 2
3. Install timing chain (primary) as follows:
a. Install crankshaft sprocket (1).
A: Matching mark (front side) <—: Engine front
^ Check that the matching marks on crankshaft sprocket face the front of the engine.
b. Install timing chain (primary).
^ Install timing chain (primary) so that the matching mark (punched) (B) on camshaft sprocket (INT)
(1) is aligned with the yellow link (A) on timing chain, while the matching mark (notched) (C) on
crankshaft sprocket (2) is aligned with the orange link (D) one on timing chain, as shown in the
figure. 3: Water pump
^ When it is difficult to align matching marks of timing chain (primary) with each sprocket, gradually
turn drive shaft using wrench on the hexagonal portion to align it with the matching marks.

4. Install internal chain guide (1), slack guide (2), and tension guide (3).
CAUTION:
Never overtighten slack guide mounting bolt (2). It is normal for a gap (A) to exist under the bolt
seats when mounting bolt are tightened to the specification.
1: Slack guide 3: Cylinder block
5. Install the timing chain tensioner (primary) with the following procedure:
a. Pull plunger stopper tab (A) up (or turn lever downward) so as to remove plunger stopper tab
from the ratchet of plunger (D).
NOTE: Plunger stopper tab and lever (C) are synchronized.
b. Push plunger into the inside of tensioner body. c. Hold plunger in the fully compressed position
by engaging plunger stopper tab with the tip of ratchet.

d. To secure lever, insert stopper pin (E) through hole of lever into tensioner body hole (B).
^ The lever parts and the plunger stopper tab are synchronized. Therefore, the plunger is secured
under this condition.
NOTE: Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the
stopper pin.
e. Install timing chain tensioner (primary) (1).
^ Remove any dirt and foreign materials completely from the back and the mounting surfaces of
timing chain tensioner (primary).
f. Pull out stopper pin (A) after installing, and then release plunger.
6. Check again that the matching marks on sprockets and timing chain have not slipped out of
alignment.
7. Install new O-rings (1) on rear timing chain case.
A: Bank 1 B: Bank 2
8. Install new front oil seal on front timing chain case.
<—: Engine inside <—: Engine outside
^ Apply new engine oil to both oil seal lip (A) and dust seal lip (B).
^ Install it so that each seal lip is oriented as shown in the figure.

^ Using a suitable drift [outer diameter: 60 mm (2.36 in)] (A), press-fit oil seal until it becomes flush
with front timing chain case end face.
^ Check that the garter spring is in position and seal lip is not inverted.
9. Install front timing chain case as follows:
^ Check that O-rings stay in place during installation to rear timing chain case.
a. Apply a continuous bead of liquid gasket with the tube presser (commercial service tool) to front
timing chain case back side as shown in the
figure. Use Genuine RTV Silicone Sealant or equivalent.
B: Protrusion C: 3.4 — 4.4 mm (0.134 — 0.173 in) dia. d: 2.6 — 3.6 mm (0.102 — 0.142 in) dia. e: 4.0 5.6 mm (0.157 — 0.220 in)
b. Apply liquid gasket to top surface of oil pan (upper) as shown in the figure.
A: 4.0 — 5.0 mm (0.157 — 0.197 in) dia.
Use Genuine RTV Silicone Sealant or equivalent.

c. Assemble front timing chain case.
1: Front timing chain case 2: Oil pan (upper) 3: Cylinder block <—: Engine front
CAUTION: ^
Be careful not to damage front oil seal by interference with front end of crankshaft.
^ Attaching should be done within 5 minutes after liquid gasket application.
d. Install front timing chain case fitting its dowel pin hole together with dowel pin on rear timing
chain case.
e. Tighten mounting bolts to the specified torque in numerical order as shown in the figure.
^ There are two types of mounting bolts. Refer to the following for locating bolts. M10 bolts: 1, 2, 3,
4, 5, 6, 7: 55.0 Nm (5.6 kg-m, 41 ft-lb) M6 bolts: Except the above: 12.7 Nm (1.3 kg-m, 9 ft-lb)
f. After all bolts are tightened, retighten them to the specified torque in numerical order shown in
the figure.
CAUTION: Be sure to wipe off any excessive liquid gasket leaking on surface mating with oil pan
(upper).
g. Install two mounting bolts in front of oil pan (upper) in numerical order shown in the figure.
<—: Engine front Tightening torque: Refer to EM-75, «Exploded View». See: Engine Lubrication/Oil
Pan/Service and Repair/Upper
10. Install intake valve timing control covers as follows:

a. Install new seal rings (1) in shaft grooves.
A: Bank 2
CAUTION: When replacing seal ring, replace all rings with new ones.
NOTE: The figure shows an example of bank 2.
b. Install intake valve timing control cover with new gasket to front timing chain case.
CAUTION: ^
Align the center of both shaft holes of the shaft and the intake side camshaft sprocket, and then
insert them.
^ Be careful not to drop the seal ring from the shaft groove.
c. Being careful not to move seal ring from the installation groove, align dowel pins on front timing
chain case with dowel pin holes (C) to install
intake valve timing control covers.
A: Bank 1 B: Bank 2
d. Tighten mounting bolts in numerical order as shown in the figure.
^ After all bolts are tightened, tighten No.1 bolt to the specified torque again.
11. Install oil pan (lower). 12. Install rocker covers (bank 1 and bank 2). 13. Install crankshaft pulley
as follows:
a. Fix crankshaft using the ring gear stopper [SST: KV10118600 (J-48641)]. b. Install crankshaft
pulley, taking care not to damage front oil seal.
^ When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not
circumference).
c. Tighten crankshaft pulley bolt.
Torque: 44.1 Nm (4.5 kg-m, 33 ft-lb)

d. Tighten the bolt 90° (one mark) (b).
^ Place a matching mark (A) on crankshaft pulley (2) aligning with the matching (C) of crankshaft
pulley bolt (1).

e. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it
turns smoothly.
14. For the following operations, perform steps in the reverse order of removal.
Inspection
INSPECTION AFTER REMOVAL
Timing Chain
Check for cracks and any excessive wear at link plates and roller links of timing chain. Replace
timing chain as necessary.
A: Crack B: Wear
INSPECTION AFTER INSTALLATION
Inspection for Leakage
The following are procedures for checking fluid leakage, lubricant leakage. ^
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If any are less
than the required quantity, fill them to the specified level.
^ Follow the procedure below to check for fuel leakage. ^
Turn ignition switch to the «ON» position (with engine stopped). With fuel pressure applied to fuel
piping, check for fuel leakage at connection points.
^ Start engine. With engine speed increased, check again for fuel leakage at connection points.
^ Run engine to check for unusual noise and vibration.
NOTE: If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide
may generate a pounding noise during and just after the engine start. However, this does not
indicate a malfunction. The noise will stop after hydraulic pressure rises.
^ Warm up engine thoroughly to check that there is no leakage of fuel, or any oil/fluids including
engine oil and engine coolant.
^ Bleed air from lines and hoses of applicable lines, such as in cooling system.
^ After cooling down engine, again check oil/fluid levels including engine oil and engine coolant.
Refill them to the specified level, if necessary.

Timing Chain Tensioner: Specifications
EM-48 Exploded View (Part 1)

EM-48 Exploded View (Part 2)

Timing Cover: Specifications
Timing Cover
Tighten mounting bolts in numerical order as shown in the figure. There are three types of
mounting bolts. Refer to the following for locating bolts. Bolt length: Bolt position 20 mm (0.79 in) …
…………………………………………………………………………………………………………………………………………..
…………….. 1, 2, 3, 6, 7, 8, 9, 10 16 mm (0.63 in) ……………………………………………………………………..
…………………………………………………………………………………………… 4, 5, 11, 12, 13 Torque …………..
…………………………………………………………………………………………………………………………………………..
…….. 12.7 Nm (1.3 kg-m, 9 ft-lb) 16 mm (0.63 in) …………………………………………………………………….
………………………………………………………………………………………… Except the above Torque ………….
…………………………………………………………………………………………………………………………………………..
……. 15.0 Nm (1.5 kg-m, 11 ft-lb) After all bolts are tightened, retighten them to the specified torque
in numerical order shown in the figure.

Timing Cover: Service and Repair
REAR TIMING CHAIN CASE
EM-78 Exploded View (Part 1)

EM-79 Exploded View (Part 1)
Disassembly and Assembly
DISASSEMBLY
1. Remove front timing chain case and timing chain. 2. Remove water pump. 3. Remove oil pan
(upper). 4. Remove rear timing chain case as follows:
a. Loosen mounting bolts in reverse order as shown in the figure. b. Cut liquid gasket using the
seal cutter [SST: KV10111100 (J37228)] and remove rear timing chain case.
CAUTION:
^ Never remove plate metal cover (1) of oil passage.
^ After removal, handle rear timing chain case carefully so it does not tilt, cant, or warp under a
load.

5. Remove O-rings (1) from cylinder block.
<—: Engine front
6. Use a scraper to remove all traces of liquid gasket from rear timing chain cases and opposite
mating surfaces.
7. Remove old liquid gasket from bolt hole and thread.
A: Remove old liquid gasket that is stuck B: Bolt hole
ASSEMBLY
1. Install rear timing chain case as follows:
a. Install new O-rings (1) onto cylinder block.
<—: Engine front
b. Apply liquid gasket with the tube presser (commercial service tool) to rear timing chain case
back side as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent.
CAUTION: ^
For A in the figure, completely wipe off liquid gasket extended on a portion touching at engine
coolant.
^ Apply liquid gasket on installation position of water pump and cylinder head completely.

c. Align rear timing chain case with dowel pins (bank 1 and bank 2) on cylinder block and install
rear timing chain case.
^ Check that O-rings stay in place during installation to cylinder block.
d. Tighten mounting bolts in numerical order as shown in the figure.
^ There are three types of mounting bolts. Refer to the following for locating bolts. Bolt length: Bolt
position
20 mm (0.79 in): 1, 2, 3, 6, 7, 8, 9, 10 16 mm (0.63 in): 4, 5, 11, 12, 13: 12.7 Nm (1.3 kg-m, 9 ft-lb)
16 mm (0.63 in): Except the above: 15.0 Nm (1.5 kg-m, 11 ft-lb)
e. After all bolts are tightened, retighten them to the specified torque in numerical order shown in
the figure.
^ If liquid gasket protrudes, wipe it off immediately.

f. After installing rear timing chain case, check the surface height difference between the following
parts on the oil pan (upper) mounting surface.
1: Rear timing chain case 2: Lower cylinder block Standard Rear timing chain case to lower
cylinder block: -0.24 to 0.14 mm (-0.0094 to 0.0055 in)
^ If not within the standard, repeat the installation procedure.

2. Install water pump with new O-rings. 3. Install timing chains, camshaft sprockets and front timing
chain case.
^ After installing front timing chain case, check the surface height difference between the following
parts on the oil pan (upper) mounting surface. 1: Front timing chain case 2: Rear timing chain case
3: Lower cylinder block Standard
Front timing chain case to rear timing chain case: -0.14 to 0.14 mm (-0.0055 to 0.0055 in)
^ If not within the standard, repeat the installation procedure.
4. Install in the reverse order of removal after this step.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Timing
Components > Variable Valve Timing > Variable Valve Timing Actuator > Component Information > Technical Service
Bulletins > Customer Interest for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Timing
Components > Variable Valve Timing > Variable Valve Timing Actuator > Component Information > Technical Service
Bulletins > All Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls Ticking Noise From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Timing
Components > Variable Valve Timing > Variable Valve Timing Actuator > Component Information > Technical Service
Bulletins > All Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls Ticking Noise From Left Bank Of Engine > Page 1907

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Timing
Components > Variable Valve Timing > Variable Valve Timing Actuator > Component Information > Technical Service
Bulletins > All Technical Service Bulletins for Variable Valve Timing Actuator: > 08-028B > Oct > 09 > Engine Controls Ticking Noise From Left Bank Of Engine > Page 1908

Variable Valve Timing Actuator: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Fuel Pressure > System Information > Specifications

Fuel Pressure: Specifications
Fuel Pressure
At idling: Approximately 350 kPa (3.57 kg/sq.cm, 51 psi)

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and Engine Performance Checks > Idle Speed > System Information > Specifications > Page 1920

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Air Cleaner Housing > Air Filter Element > Component Information > Service and Repair

INSTALLATION
Note the following, and install in the reverse order of removal. ^
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.

Firing Order: Specifications
Firing order: 1 — 2 — 3 — 4 — 5 — 6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Ignition Timing > Timing Marks and Indicators > System Information > Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Spark Plug > Component Information > Specifications

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and Engine Performance Checks > Spark Plug > Component Information > Specifications > Page 1939

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1942

a: 14 mm (0.55 in)
INSTALLATION
Installation is the reverse order of removal.
Inspection
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1943

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and Engine Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 1945

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Compression Check > System Information > Specifications

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Compression Check > System Information > Specifications > Page 1949

Compression Check: Testing and Inspection
COMPRESSION PRESSURE
Inspection
1. Warm up engine thoroughly. Then, stop it. 2. Release fuel pressure. Refer to EC-601,
«Inspection».
3. Disconnect fuel pump fuse (1) from IPDM E/R (2) to avoid fuel injection during measurement. 4.
Remove engine cover with power tool. 5. Remove ignition coil and spark plug from each cylinder.
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression gauge with an adapter (commercial service tool) onto spark plug hole.
^ Use the adapter whose picking up end inserted to spark plug hole is smaller than 20 mm (0.79 in)
in diameter. Otherwise, it may be caught by cylinder head during removal. a: 20 mm (0.79 in)
8. With accelerator pedal fully depressed, turn ignition switch to «START» for cranking. When the
gauge pointer stabilizes, read the compression
pressure and the engine rpm. Perform these steps to check each cylinder.
Compression pressure: Refer to EM-138, «General Specification». See: Specifications/Service
Limits and General Specifications/General Specifications
CAUTION: ^
Measure a six-cylinder under the same conditions since a measurement depends on measurement
conditions (engine water temperature, etc.).
^ Always use a fully changed battery to obtain the specified engine speed.
^ If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
^ If compression pressure is below the minimum value, check valve clearances and parts
associated with combustion chamber (valve, valve seat,

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
and Engine Performance Checks > Valve Clearance > System Information > Specifications > Valve Lifter

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
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and Engine Performance Checks > Valve Clearance > System Information > Specifications > Valve Lifter > Page 1956

Valve Clearance: Specifications Available Valve Lifter

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and Engine Performance Checks > Valve Clearance > System Information > Specifications > Page 1957

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and Engine Performance Checks > Valve Clearance > System Information > Specifications > Page 1958

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Tune-up
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Engine > Water
Pump > Component Information > Specifications

CO-19 Exploded View

Water Pump: Service and Repair
Removal and Installation
CO-19 Exploded View
CAUTION: ^
When removing water pump assembly, be careful not to get engine coolant on drive belts.
^ Water pump cannot be disassembled and should be replaced as a unit.
^ After installing water pump, connect hose and clamp securely, then check for leaks using the
radiator cap tester (commercial service tool) and the radiator cap tester adapter [SST:
EG17650301 (J33984-A)].
REMOVAL
1. Remove engine cover. 2. Release the fuel pressure. Refer to EC-601, «Inspection». 3.
Disconnect the battery cable from the negative terminal. 4. Remove air duct and air cleaner case
assembly (RH and LH). 5. Remove reservoir tank. 6. Separate engine harness removing their
brackets from front timing chain case. 7. Remove engine undercover with power tool. 8. Drain
engine oil.
CAUTION: ^
Perform this step when the engine is cold.

^ Never spill engine oil on drive belts.
9. Drain engine coolant from radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
10. Remove cooling fan assembly. 11. Remove radiator hose (upper and lower). 12. Remove front
timing chain case. 13. Remove timing chain tensioner (primary) as follows:

a. Remove lower mounting bolt (1). b. Loosen upper mounting bolt (2) slowly, and then turn chain
tensioner (primary) (3) on the upper mounting bolt so that plunger (4) is fully
expanded.
NOTE: Even if plunger is fully expanded, it is not dropped from the body of timing chain tensioner
(primary).
c. Remove upper mounting bolt, and then remove timing chain tensioner (primary).
14. Remove water pump as follows:
a. Remove three water pump mounting bolts. Secure a gap between water pump gear and timing
chain, by turning crankshaft counterclockwise
until timing chain looseness on water pump sprocket becomes maximum.
b. Screw M8 bolts (A) [pitch: 1.25 mm (0.049 in) length: approx. 50 mm (1.97 in)] into water pumps
upper and lower mounting bolt holes until
they reach timing chain case. Then, alternately tighten each bolt for a half turn, and pull out water
pump (1).
CAUTION: ^
Pull straight out while preventing vane from contacting socket in installation area.
^ Remove water pump without causing sprocket to contact timing chain.
c. Remove M8 bolts and O-rings from water pump.
CAUTION: Never disassemble water pump.
INSTALLATION
1. Install new O-rings to water pump.
^ Apply engine oil to O-ring (1) and engine coolant to O-ring (3) as shown in the figure. 2: Water
pump
^ Locate O-ring with yellow paint mark (A) to front side.

^ Locate O-ring with light blue paint mark (B) to rear side.
2. Install water pump.
CAUTION: Never allow cylinder block to nip O-rings when installing water pump.
^ Check timing chain and water pump sprocket are engaged.
^ Insert water pump by tightening mounting bolts alternately and evenly.
3. Install timing chain tensioner (primary) as follows:
a. Turn crankshaft clockwise so that timing chain on the timing chain tensioner (primary) side is
loose.
b. Pull plunger stopper tab (A) up (or turn lever downward) so as to remove plunger stopper tab
from the ratchet of plunger (D).
NOTE: Plunger stopper tab and lever (C) are synchronized.
c. Push plunger into the inside of tensioner body d. Hold plunger in the fully compressed position
by engaging plunger stopper tab with the tip of ratchet. e. To secure lever, insert stopper pin
through hole of lever into tensioner body hole (B).
^ The lever parts and the tab are synchronized. Therefore, the plunger will be secured under this
condition.
NOTE: Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the
stopper pin.
f. Install timing chain tensioner (primary). ^
Remove dust and foreign material completely from backside of timing chain tensioner (primary) and
from installation area of rear timing chain case.
g. Remove stopper pin. h. Check again that timing chain and water pump sprocket are engaged.
4. Install in the reverse order of removal for remaining parts.
^ After starting engine, let idle for three minutes, then rev engine up to 3,000 rpm under no load to
purge air from the high-pressure chamber of chain tensioner. Engine may produce a rattling noise.
This indicates that air still remains in the chamber and is not a matter of concern.
Inspection
INSPECTION AFTER REMOVAL
^ Check for badly rusted or corroded water pump body assembly.
^ Check for rough operation due to excessive end play.
^ If anything is found, replace water pump.

INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Cooling System/Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Coolant > Component Information > Specifications > Capacity Specifications

CO-24 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Coolant Line/Hose > Component Information > Specifications > Page 1979

Coolant Line/Hose: Service and Repair
WATER OUTLET AND WATER PIPING

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Coolant Line/Hose > Component Information > Specifications > Page 1980

8. Separate engine harness removing their bracket from water outlet (rear). 9. Remove engine
coolant temperature sensor as necessary
CAUTION: Be careful not to damage engine coolant temperature sensor.
10. Remove heater pipe, water bypass pipe and water outlet pipe. 11. Remove water outlet (rear)
as necessary
NOTE: Removing engine assembly is required.
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Securely insert each hose, and install clamp at a position where it does not interfere with the pipe
bulge.
^ When inserting water outlet pipe and water bypass pipe into water outlet, apply neutral detergent
to O-ring.
CAUTION: Never allow water outlet (rear) to nip O-rings when installing water outlet pipe and water
bypass pipe.
Inspection
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

CO-24 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Coolant Outlet > Component Information > Specifications > Page 1984

Coolant Outlet: Service and Repair
WATER OUTLET AND WATER PIPING

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Coolant Outlet > Component Information > Specifications > Page 1985

8. Separate engine harness removing their bracket from water outlet (rear). 9. Remove engine
coolant temperature sensor as necessary
CAUTION: Be careful not to damage engine coolant temperature sensor.
10. Remove heater pipe, water bypass pipe and water outlet pipe. 11. Remove water outlet (rear)
as necessary
NOTE: Removing engine assembly is required.
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Securely insert each hose, and install clamp at a position where it does not interfere with the pipe
bulge.
^ When inserting water outlet pipe and water bypass pipe into water outlet, apply neutral detergent
to O-ring.
CAUTION: Never allow water outlet (rear) to nip O-rings when installing water outlet pipe and water
bypass pipe.
Inspection
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator Cooling Fan > Radiator Cooling Fan Motor > Component Information > Testing and Inspection

Radiator Cooling Fan Motor: Testing and Inspection
COOLING FAN
Description
COOLING FAN CONTROL MODULE
Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to
this ON/OFF pulse duty signal, cooling fan control module sends cooling fan motor operating
voltage to cooling fan motor. The revolution speed of cooling fan motor is controlled by duty cycle
of the voltage.
COOLING FAN MOTOR
Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module.
The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.
Component Function Check
Step 1
Diagnosis Procedure

Step 1-2

Step 3-7

Step 7 (Continued)-11
Component Inspection (Cooling Fan Motor)
Step 1

Step 1 (Continued)
Component Inspection (Cooling Fan Relay)
Step 1

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Heater Core > Component Information > Service and Repair

Heater Core: Service and Repair
HEATER CORE
Exploded View
VTL-42 Exploded View (Part 1)

VTL-42 Exploded View (Part 2)
Removal and Installation
REMOVAL
1. Remove heater & cooling unit assembly.
2. Remove mounting screws (A), and then remove heater pipe cover (1). 3. Remove mounting
screws (B), and then remove foot duct (left) (2). 4. Slide heater core (3) to leftward (as shown in the
figure).
INSTALLATION
Installation is basically the reverse order of removal.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Lamps and Indicators — Cooling System > Temperature Gauge > Component Information > Locations

Temperature Gauge: Description and Operation
ENGINE COOLANT TEMPERATURE GAUGE
ENGINE COOLANT TEMPERATURE GAUGE: System Diagram
ENGINE COOLANT TEMPERATURE GAUGE: System Description
— ECM converses a signal from engine coolant temperature sensor to engine coolant temperature
signal, and transmits to unified meter and A/C amp. with CAN communication line.
— Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter
with communication line.
— Combination meter converses engine coolant temperature signal to the angle signal, and
commands to engine coolant temperature gauge.
ENGINE COOLANT TEMPERATURE GAUGE: Component Description

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator > Component Information > Specifications > Page 2006

Radiator: Testing and Inspection
RADIATOR: Inspection
Check radiator for mud or clogging. If necessary, clean radiator as follows: ^
Be careful not to bend or damage radiator fins.
^ When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling
fan assembly and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward. 2. Apply water
again to all radiator core surfaces once per minute. 3. Stop washing if any stains no longer flow out
from radiator. 4. Blow air into the back side of radiator core vertically downward.
^ Use compressed air lower than 490 kPa (5 kg/cm2, 71 psi) and keep distance more than 30 cm
(11.8 in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator > Component Information > Specifications > Page 2007

Radiator: Service and Repair
Removal and Installation
CO-14 Exploded View
REMOVAL
WARNING: Never remove radiator cap when engine is hot. Serious burns could occur from
high-pressure engine coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly
turn it a quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all
the way.
1. Remove the following parts:
^ Engine undercover with power tool.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator > Component Information > Specifications > Page 2008

^ Engine cover
^ Air cleaner case (RH and LH)
^ Reservoir tank
^ Radiator core support ornament, radiator core support center and horn
^ Hood lock

2. Remove condenser pipe assembly. 3. Drain engine coolant from radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
4. Disconnect A/T fluid cooler hoses from radiator. (A/T models)
^ Install blind plug to avoid leakage of A/T fluid.
5. Remove radiator hoses (upper and lower) and reservoir tank hose.
CAUTION: Be careful not to allow engine coolant to contact drive belts.
6. Remove cooling fan assembly.
CAUTION: Never damage or scratch radiator & condenser assembly core when removing.
7. Rotate two radiator upper mount brackets 90° in direction as shown in the figure, and remove
them.
1: Radiator upper mount bracket A: Turn 90°counterclockwise
8. Remove radiator & condenser assembly as follows:
CAUTION: Be careful not to damage radiator & condenser assembly core.
a. Lift up and pull the radiator & condenser assembly (1) forward, and then remove the mounting
rubber (lower) (3) from the radiator core
support (2).
<—: Vehicle front

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator > Component Information > Specifications > Page 2009

b. Remove radiator & condenser assembly (1) from front of radiator core support (2).
<—: Vehicle front
INSTALLATION
Installation is the reverse order of removal.
Inspection
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant and A/T
fluid (A/T models).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Radiator Cap > Component Information > Testing and Inspection

Radiator Cap: Testing and Inspection
RADIATOR CAP: Inspection
^ Check valve seat of radiator cap. ^
Check if valve seat is swollen to the extent that the edge of the plunger cannot be seen when
watching it vertically from the top.
^ Check if valve seat has no soil and damage.
A: Valve seat B: Metal plunger
^ Pull negative-pressure valve to open it, and check that it close completely when released. ^
Check that there is no dirt or damage on the valve seat of radiator cap negative-pressure valve.
^ Check that there are no unusualness in the opening and closing conditions of negative-pressure
valve.
^ Check radiator cap relief pressure.
Standard and limit: Refer to CO-26, «Radiator». See: Radiator/Specifications
^ When connecting radiator cap to the radiator cap tester and the radiator cap tester adapter
(commercial service tool) (A), apply engine coolant to the cap seal surface.
^ Replace radiator cap if there is an unusualness related to the above three.
CAUTION: When installing radiator cap, thoroughly wipe out the water outlet (front) filler neck to
remove any waxy residue or foreign material.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Temperature Gauge > Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Thermostat, Engine Cooling > Component Information > Specifications > Mechanical Specifications

CO-22 Exploded View

Thermostat: Service and Repair
WATER INLET AND THERMOSTAT ASSEMBLY
CO-22 Exploded View
Removal and Installation
REMOVAL
1. Remove engine cover. 2. Remove air duct and air cleaner case assembly (LH). 3. Remove
reservoir tank. 4. Remove oil cooler water pipe mounting bolt, and move aside water pipe. 5.
Remove engine undercover with power tool. 6. Drain engine coolant from radiator drain plug at the
bottom of radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
7. Disconnect radiator hose (lower). 8. Disconnect intake valve timing control valve harness
connector (LH), and remove intake valve timing control solenoid.
9. Remove water inlet and thermostat assembly (1).
CAUTION: Never disassemble water inlet and thermostat assembly. Replace them as a unit, if
necessary.
A: Do not loosen these screw.
INSTALLATION

Note the following, and install in the reverse order of removal. ^
Be careful not to spill engine coolant over engine room. Use rag to absorb engine coolant.
Inspection
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temperatures. It should seat tightly.
2. Check valve operation.
Thermostat (Standard): Refer to CO-26, «Thermostat». See: Specifications/Pressure, Vacuum and
Temperature Specifications
^ If the malfunctioning condition, when valve seating at ordinary room temperature, or measured
values are out of the standard, replace water inlet and thermostat assembly.
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Thermostat Housing, Engine Cooling > Component Information > Specifications

CO-22 Exploded View

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Thermostat Housing, Engine Cooling > Component Information > Specifications > Page 2027

Thermostat Housing: Service and Repair
WATER INLET AND THERMOSTAT ASSEMBLY
CO-22 Exploded View
Removal and Installation
REMOVAL
1. Remove engine cover. 2. Remove air duct and air cleaner case assembly (LH). 3. Remove
reservoir tank. 4. Remove oil cooler water pipe mounting bolt, and move aside water pipe. 5.
Remove engine undercover with power tool. 6. Drain engine coolant from radiator drain plug at the
bottom of radiator.
CAUTION: ^
Perform this step when the engine is cold.
^ Never spill engine coolant on drive belts.
7. Disconnect radiator hose (lower). 8. Disconnect intake valve timing control valve harness
connector (LH), and remove intake valve timing control solenoid.
9. Remove water inlet and thermostat assembly (1).
CAUTION: Never disassemble water inlet and thermostat assembly. Replace them as a unit, if
necessary.
A: Do not loosen these screw.
INSTALLATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Thermostat Housing, Engine Cooling > Component Information > Specifications > Page 2028

Note the following, and install in the reverse order of removal. ^
Be careful not to spill engine coolant over engine room. Use rag to absorb engine coolant.
Inspection
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temperatures. It should seat tightly.
2. Check valve operation.
Thermostat (Standard): Refer to CO-26, «Thermostat». See: Thermostat/Specifications/Pressure,
Vacuum and Temperature Specifications
^ If the malfunctioning condition, when valve seating at ordinary room temperature, or measured
values are out of the standard, replace water inlet and thermostat assembly.
INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Cooling System >
Water Pump > Component Information > Specifications

CO-19 Exploded View

INSPECTION AFTER INSTALLATION
^ Check that the reservoir tank cap is tightened.
^ Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301
(J33984-A)] and the radiator cap tester (commercial service tool). Refer to CO-8, «Inspection». See:
Testing and Inspection/Initial Inspection and Diagnostic Overview
^ Start and warm up the engine. Visually check that there is no leaks of engine coolant.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Catalytic Converter > Component Information > Service and Repair

Catalytic Converter: Service and Repair
Removal and Installation
EX-5 Exploded View
REMOVAL
^ Disconnect each joint and mounting using power tool.
^ Remove heated oxygen sensor 2 as follows:

^ Using heated oxygen sensor wrench [SST: KV10114400 (J38365)] (C), removal heated oxygen
sensor 2.
A: Bank 2 B: Bank 1 <—: Vehicle front
CAUTION: Be careful not to damage heated oxygen sensor 2.
INSTALLATION
Note the following, and install in the reverse order of removal. ^
Check for deformation of the grommets (13 and 15 of Components).
^ Insert the collar (12 of Components) vertically.
^ Temporarily tighten nuts and bolts when installing exhaust pipe assembly. Tighten them to the
specified torque when connecting the vehicle rear to the vehicle front.
CAUTION: ^
Always replace exhaust tube gaskets with new ones when reassembling.
^ Discard any heated oxygen sensor which has been dropped onto a hard surface such as a
concrete floor. Use a new one.
^ Before installing a new heated oxygen sensor, clean exhaust system threads using the heated
oxygen sensor thread cleaner [commercial service tool: J-43897-18 or J-43897-12], and apply the
anti-seize lubricant (commercial service tool).
^ Never over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in the «MIL» coming on.
^ If heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the
heat insulator, remove them.
^ When installing heat insulator avoid large gaps or interference between heat insulator and each
exhaust pipe.

^ Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gases leakage.
^ Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the
vehicle side. Check each part for unusual interference, and then tighten them to the specified
torque.
^ When installing each mounting rubber, avoid twisting or unusual extension in up/down and
right/left directions.
Inspection
INSPECTION AFTER INSTALLATION
^ Check clearance between tail tube and rear bumper is even.
^ With engine running, check exhaust tube joints for gas leakage and unusual noises.
^ Check to ensure that mounting brackets and mounting rubbers are installed properly and free
from undue stress. Improper installation could result in excessive noise and vibration.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Exhaust Manifold > Component Information > Specifications > Service Limits and General Specifications

Exhaust Manifold: Specifications Tightening Torque and Sequence
EM-33 Exploded View
Exhaust Manifold
If stud bolts were removed, install them and tighten to the torque specified below. Tightening torque
…………………………………………………………………………………………………………………………………………..
…… Refer to «Exploded View».

Install exhaust manifold and tighten mounting bolts in numerical order as shown in the figure. A:
Bank 1 B: Bank 2 <—: Engine front
NOTE: Tighten nuts the No. 1 and 2 in two steps. The numerical order No. 7 and 8 shows the
second step.

Exhaust Manifold: Service and Repair
Removal and Installation
EM-33 Exploded View
REMOVAL
WARNING: Perform the work when the exhaust and cooling system have completely cooled down.
NOTE: When removing bank 1 side parts only, steps 1, 4 and 7 are unnecessary.

1. Drain engine coolant. 2. Remove engine cover with power tool. 3. Remove air cleaner case and
air duct (RH and LH). 4. Remove water pipe and water hose. 5. Remove engine undercover with
power tool. 6. Remove exhaust front tube and three way catalysts (bank 1 and bank 2). 7.
Disconnect steering lower joint at power steering gear assembly side, and release steering lower
shaft. 8. Disconnect air fuel ratio sensor (bank 1 and bank 2) harness connectors and remove
harness clip.

9. Using the heated oxygen sensor wrench [SST: KV10114400 (J38365)] (C), remove air fuel ratio
sensor (bank 1 and bank 2).
A: Bank 2 B: Bank 1
CAUTION: ^
Be careful not to damage air fuel ratio sensor.
^ Discard any air fuel ratio sensor that has been dropped onto a hard surface such as a concrete
floor. Replace with a new sensor.
10. Remove exhaust manifold cover (upper) (bank 1 and bank 2).
11. Loosen mounting nuts in the reverse order as shown in the figure to remove exhaust manifold.
NOTE: Disregard the numerical order No. 7 and 8 in removal.
A: Bank 1 B: Bank 2 <—: Engine front
12. Remove gaskets.
CAUTION: Cover engine openings to avoid entry of foreign materials.
INSTALLATION
Note the following, and install in the reverse order of removal.
EXHAUST MANIFOLD GASKET

^ Install exhaust manifold gasket in direction shown in the figure. (Follow the same procedure for
both banks.)
A: Bank 1 B: Triangle press C: Bank 2 <—: Engine front
EXHAUST MANIFOLD
^ If stud bolts were removed, install them and tighten to the torque specified below.
Tightening torque: Refer to «Exploded View».
^ Install exhaust manifold and tighten mounting bolts in numerical order as shown in the figure.
A: Bank 1 B: Bank 2 <—: Engine front
NOTE: Tighten nuts the No. 1 and 2 in two steps. The numerical order No. 7 and 8 shows the
second step.
AIR FUEL RATIO SENSOR
CAUTION: ^
Before installing a new air fuel ratio sensor, clean exhaust system threads using heated oxygen
sensor thread cleaner tool (Commercial Service Tool: J-43897-18 or J-43897-12) and apply
anti-seize lubricant.
^ Never apply excessive torque to air fuel ratio sensor. Doing so may cause damage to air fuel ratio
sensor, resulting in the «MIL» illuminating.
Inspection
INSPECTION AFTER REMOVAL
Surface Distortion

^ Check the surface distortion of the exhaust manifold mating surface with a straightedge (A) and a
feeler gauge (B).
Limit: Refer to EM-139, «Exhaust Manifold». See: Specifications/Service Limits and General
Specifications
^ If it exceeds the limit, replace exhaust manifold.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > Customer Interest: > 08-023A > Nov > 09 > Exhaust
System — Rattling Noises From Main Muffler

Muffler: Customer Interest Exhaust System — Rattling Noises From Main Muffler
Classification: FE08-002A
Reference: ITB08-023A
Date: November 24, 2009
2008 — 2009 G37 COUPE; RATTLE IN MAIN MUFFLER
This bulletin has been amended. The Applied Vehicles, VIN and Date, have been updated, and the
Parts Information has been changed. Please discard earlier versions of this bulletin.
APPLIED VEHICLE: 2008 — 2009 G37 Coupe (CV36)
APPLIED VIN: 2008 all VINs 2009 vehicles built before JNKCV64(**)9M 605009
APPLIED DATE: Vehicles built before February 26, 2009.
IF YOU CONFIRM:
There is a rattle sound coming from inside the main (rear) muffler assembly.
ACTION:
Replace the muffler assembly with the one listed in the Parts Information section of this bulletin.
^ Reference the Electronic Service Manual for muffler replacement information.
PARTS INFORMATION
CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Technical Service Bulletins: > 08-023A > Nov > 09 >
Exhaust System — Rattling Noises From Main Muffler

Muffler: All Technical Service Bulletins Exhaust System — Rattling Noises From Main Muffler
Classification: FE08-002A
Reference: ITB08-023A
Date: November 24, 2009
2008 — 2009 G37 COUPE; RATTLE IN MAIN MUFFLER
This bulletin has been amended. The Applied Vehicles, VIN and Date, have been updated, and the
Parts Information has been changed. Please discard earlier versions of this bulletin.
APPLIED VEHICLE: 2008 — 2009 G37 Coupe (CV36)
APPLIED VIN: 2008 all VINs 2009 vehicles built before JNKCV64(**)9M 605009
APPLIED DATE: Vehicles built before February 26, 2009.
IF YOU CONFIRM:
There is a rattle sound coming from inside the main (rear) muffler assembly.
ACTION:
Replace the muffler assembly with the one listed in the Parts Information section of this bulletin.
^ Reference the Electronic Service Manual for muffler replacement information.
PARTS INFORMATION
CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released

Parking Brake Warning Lamp: All Technical Service Bulletins Brakes — Parking Brake Lamp On
With Pedal Released
Classification: EL09-06
Reference: 09-026
Date: May 12, 2009
PARKING BRAKE LIGHT SWITCH REPAIR PROCEDURE
APPLIED VEHICLES NOTE:
Vehicles with foot-operated parking brake ONLY.
APPLIED VINs / DATES
IF YOU CONFIRM

The parking brake light remains on when the foot operated parking brake pedal is released.
AND
The parking brake switch is damaged as described in the Service Procedure section of this bulletin.
ACTION
Replace the parking brake pedal assembly with the one listed in Parts Information.
Refer to the Service Procedure in this bulletin.
NOTE:
^ Do NOT replace the switch alone. Instead, REPLACE the ENTIRE PEDAL ASSEMBLY.
^ The parking brake cables DO NOT need to be removed for this procedure.
^ The new parking brake pedal assembly comes with a new switch.
IMPORTANT:
The purpose of «ACTIONS» (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire Service

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Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2069

Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIMS INFORMATION

SERVICE PROCEDURE
1. Remove the LH lower finisher.
2. Inspect the foot-operated parking brake switch:

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Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2070

^ Lightly check to see if the switch rotates loosely. If the switch rotates loosely, the pin is damaged.
This bulletin applies. Proceed to step 3.

^ If the switch is not loose and does not rotate, this bulletin does not apply. Return to ASIST for
further diagnostic assistance.
NOTE:
Switch is shown removed for illustrative purpose.
3. Remove parking brake adjusting nut located at the top of the parking brake assembly.
CAUTION:
Do NOT reuse adjusting nut after replacing PEDAL. Replace adjusting nut with a new one listed in
Parts Information.
NOTE:
The parking brake cables DO NOT need to be removed for this procedure.
4. Disconnect parking brake switch harness connector.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2071

5. Remove 4 bolts attaching the device assembly to the bulkhead.
6. Remove pedal assembly.
7. Install a new pedal assembly in reverse order of removal.
NOTE:
Refer to the appropriate section of the Electronic Service Manual for pedal assembly mounting nut
torque specifications for the vehicle.
8. Install a new adjusting nut from the Parts Information section of this bulletin.
9. Adjust foot-operated parking brake cable. Refer to the appropriate section in the Electronic
Service Manual for adjustment procedure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2077

Procedure as it contains information that is essential to successfully completing this repair.
PARTS INFORMATION
CLAIMS INFORMATION

SERVICE PROCEDURE
1. Remove the LH lower finisher.
2. Inspect the foot-operated parking brake switch:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2078

^ Lightly check to see if the switch rotates loosely. If the switch rotates loosely, the pin is damaged.
This bulletin applies. Proceed to step 3.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Engine, Cooling and Exhaust > Exhaust System >
Muffler > Component Information > Technical Service Bulletins > All Other Service Bulletins for Muffler: > 09-026 > May >
09 > Brakes — Parking Brake Lamp On With Pedal Released > Page 2079

Body Control Module: Diagrams
TERMINAL LAYOUT
PHYSICAL VALUES

Terminal And Reference Values (Part 1)

Terminal And Reference Values (Part 2)

Terminal And Reference Values (Part 3)

Terminal And Reference Values (Part 4)

Terminal And Reference Values (Part 5)

Terminal And Reference Values (Part 6)

Terminal And Reference Values (Part 7)

Terminal And Reference Values (Part

Terminal And Reference Values (Part 9)

Terminal And Reference Values (Part 10)

Terminal And Reference Values (Part 11)

Terminal And Reference Values (Part 12)

Terminal And Reference Values (Part 13)

Terminal And Reference Values (Part 14)

Terminal And Reference Values (Part 15)

Terminal And Reference Values (Part 16)

Terminal And Reference Values (Part 17)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC
P1421 Stored

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2123

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2124

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

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Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2125

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2126

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2127

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 10-010C > Sep > 10 > Engine Controls — Low Battery
Voltage/No Start > Page 2128

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 2133

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > Customer Interest: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise
From Left Bank Of Engine > Page 2134

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2140

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2141

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2142

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2143

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2144

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-076A > Apr > 11
> Engine Controls — MIL ON/DTC P1421 Stored > Page 2145

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start > Page 2150

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start > Page 2151

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

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> Engine Controls — Low Battery Voltage/No Start > Page 2152

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start > Page 2153

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start > Page 2154

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-010C > Sep > 10
> Engine Controls — Low Battery Voltage/No Start > Page 2155

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2160

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2161

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2162

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2163

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2164

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2165

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2166

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2167

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2168

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2169

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2170

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2171

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2172

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2173

Attachment — General Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 08-028B > Oct > 09
> Engine Controls — Ticking Noise From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 08-028B > Oct > 09
> Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2178

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 08-028B > Oct > 09
> Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2179

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2184

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2185

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2186

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2187

d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2188

^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2189

b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2190

e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2191

h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Technical Service Bulletins for Engine Control Module: > 00-038C > Apr > 04
> Engine Controls — ECM Replacement Procedures > Page 2192

k. Turn the ignition switch OFF and wait at least 10 seconds.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2198

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2199

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2200

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2201

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2202

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2203

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2204

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2205

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2206

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2207

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2208

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2209

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2210

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 10-038 > Jun > 10 >
Engine Controls — ECM Programming Interruption Recovery > Page 2211

Attachment — General Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2216

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2217

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2218

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2219

d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2220

^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2221

b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2222

e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2223

h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Technical Service Bulletins > All Other Service Bulletins for Engine Control Module: > 00-038C > Apr > 04 >
Engine Controls — ECM Replacement Procedures > Page 2224

k. Turn the ignition switch OFF and wait at least 10 seconds.

Engine Control Module: Locations

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)

Terminals And Reference Values (Part 12)

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)

Terminals And Reference Values (Part 12)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Service and Repair > Additional Service When Replacing Control Unit

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Relays and Modules Powertrain Management > Relays and Modules — Computers and Control Systems > Engine Control Module > Component
Information > Service and Repair > Additional Service When Replacing Control Unit > Page 2253

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Accelerator Pedal Position Sensor >
Component Information > Locations

Accelerator Pedal Position Sensor: Locations

Installation is the reverse order of removal.
Inspection
INSPECTION AFTER INSTALLATION
— Check accelerator pedal moves smoothly within the whole operation range when it is fully
depressed and released.
— Check accelerator pedal securely returns to the fully released position.
— For the electrical inspection of accelerator pedal position sensor, refer to EC-458, See:
Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/P Code Charts/P2122 «Description», EC-462, «Description» See:
Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/P Code Charts/P2127 and EC-466, «Description». See: Computers and
Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated
Procedures/P Code Charts/P2138
CAUTION: When harness connector of accelerator pedal position sensor is disconnected, perform
Accelerator Pedal Released Position Learning. Refer to EC-18, «ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Description». See: Computers and Control Systems/Testing
and Inspection/Programming and Relearning/Accelerator Pedal Released Position Learning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 2264

2. Remove the airflow meter sensor from the airflow meter housing.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 2265

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2266

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2267

Air Flow Meter/Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2268

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2269

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2270

Inspect air duct and resonator assembly for crack or tear. ^

If anything is found, replace air duct and resonator assembly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Battery Current Sensor >
Component Information > Description and Operation

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Camshaft Position Sensor >
Component Information > Locations

Camshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Camshaft Position Sensor >
Component Information > Locations > Page 2277

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Crankshaft Position Sensor >
Component Information > Locations

Crankshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Crankshaft Position Sensor >
Component Information > Locations > Page 2281

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Intake Air Temperature Sensor >
Component Information > Locations

Intake Air Temperature Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Intake Air Temperature Sensor >
Component Information > Locations > Page 2285

Knock Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Knock Sensor > Component
Information > Locations > Page 2289

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Manifold Pressure/Vacuum Sensor >
Component Information > Locations

Manifold Pressure/Vacuum Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Manifold Pressure/Vacuum Sensor >
Component Information > Locations > Page 2293

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure

Oxygen Sensor: Technical Service Bulletins Engine Controls — Seized O2 Sensor Removal
Procedure

^ Before this occurs it is recommended to cut the wiring harness from the sensor and use a box
end wrench or 6-point deep well socket.
1. Clamp the exhaust manifold/catalyst/front tube in a vice.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 2298

2. Spray the sensor with the rust penetrant for 2 to 3 seconds.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 2299

^ Repeat this motion several times until the sensor begins to turn more easily.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Seized O2 Sensor Removal Procedure > Page 2300

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations

Oxygen Sensor: Component Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2303

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2304

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2305

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2306

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2307

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2308

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2309

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2310

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2311

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2312

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2313

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2314

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2315

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2316

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2317

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2318

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2319

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2320

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2321

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2322

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2323

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2324

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2325

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2326

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2327

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2328

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2329

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2330

Oxygen Sensor: Connector Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2331

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2332

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2333

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2334

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2335

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2336

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2337

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2338

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Oxygen Sensor > Component
Information > Locations > Component Locations > Page 2339

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Computers and Control Systems > Power Steering Pressure Switch >
Component Information > Locations

Power Steering Pressure Switch: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Accelerator Pedal Position Sensor >
Component Information > Locations

Accelerator Pedal Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Accelerator Pedal Position Sensor >
Component Information > Locations > Page 2347

Installation is the reverse order of removal.
Inspection
INSPECTION AFTER INSTALLATION
— Check accelerator pedal moves smoothly within the whole operation range when it is fully
depressed and released.
— Check accelerator pedal securely returns to the fully released position.
— For the electrical inspection of accelerator pedal position sensor, refer to EC-458, See:
Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/P Code Charts/P2122 «Description», EC-462, «Description» See:
Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/P Code Charts/P2127 and EC-466, «Description». See: Computers and
Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated
Procedures/P Code Charts/P2138
CAUTION: When harness connector of accelerator pedal position sensor is disconnected, perform
Accelerator Pedal Released Position Learning. Refer to EC-18, «ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Description». See: Computers and Control Systems/Testing
and Inspection/Programming and Relearning/Accelerator Pedal Released Position Learning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 2352

2. Remove the airflow meter sensor from the airflow meter housing.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Engine Controls — Air Flow Meter Service Procedure > Page 2353

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2354

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2355

Air Flow Meter/Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2356

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2357

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Air Flow Meter/Sensor > Component
Information > Technical Service Bulletins > Page 2358

Inspect air duct and resonator assembly for crack or tear. ^

If anything is found, replace air duct and resonator assembly.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Fuel Delivery and Air Induction > Oil Pressure Switch (For Fuel Pump) >
Component Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Camshaft Position Sensor > Component Information >
Locations

Camshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Camshaft Position Sensor > Component Information >
Locations > Page 2366

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Crankshaft Position Sensor > Component Information
> Locations

Crankshaft Position Sensor: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Crankshaft Position Sensor > Component Information
> Locations > Page 2370

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Ignition Switch > Component Information > Locations

Ignition Switch: Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Ignition Switch > Component Information > Locations
> Page 2374

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Knock Sensor > Component Information > Locations

Knock Sensor: Locations

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Sensors and Switches Powertrain Management > Sensors and Switches — Ignition System > Knock Sensor > Component Information > Locations >
Page 2378

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Fuel Pressure > System Information > Specifications

Fuel Pressure: Specifications
Fuel Pressure
At idling: Approximately 350 kPa (3.57 kg/sq.cm, 51 psi)

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Performance Checks > Idle Speed > System Information > Specifications > Page 2387

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Air Cleaner Housing > Air Filter Element > Component Information > Service and Repair

INSTALLATION
Note the following, and install in the reverse order of removal. ^
Install the air cleaner filter by aligning the seal with the notch of air cleaner case.

Firing Order: Specifications
Firing order: 1 — 2 — 3 — 4 — 5 — 6

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Ignition Timing > Timing Marks and Indicators > System Information > Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Spark Plug > Component Information > Specifications

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Performance Checks > Spark Plug > Component Information > Specifications > Page 2406

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Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 2409

a: 14 mm (0.55 in)
INSTALLATION
Installation is the reverse order of removal.
Inspection
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 2410

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Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 2411

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Performance Checks > Spark Plug > Component Information > Service and Repair > Spark Plug > Page 2412

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Compression Check > System Information > Specifications

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Performance Checks > Compression Check > System Information > Specifications > Page 2416

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Performance Checks > Compression Check > System Information > Specifications > Page 2417

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Tune-up and Engine
Performance Checks > Valve Clearance > System Information > Specifications > Valve Lifter

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Performance Checks > Valve Clearance > System Information > Specifications > Valve Lifter > Page 2422

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Performance Checks > Valve Clearance > System Information > Specifications > Valve Lifter > Page 2423

Valve Clearance: Specifications Available Valve Lifter

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Performance Checks > Valve Clearance > System Information > Specifications > Page 2424

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Performance Checks > Valve Clearance > System Information > Specifications > Page 2425

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Performance Checks > Valve Clearance > System Information > Specifications > Page 2426

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Performance Checks > Valve Clearance > System Information > Specifications > Page 2428

Accelerator Pedal Position Sensor: Locations

Inspection
INSPECTION AFTER INSTALLATION
— Check accelerator pedal moves smoothly within the whole operation range when it is fully
depressed and released.
— Check accelerator pedal securely returns to the fully released position.
— For the electrical inspection of accelerator pedal position sensor, refer to EC-458, See: Testing
and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/P Code Charts/P2122
«Description», EC-462, «Description» See: Testing and Inspection/Diagnostic Trouble Code Tests
and Associated Procedures/P Code Charts/P2127 and EC-466, «Description». See: Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/P Code Charts/P2138
CAUTION: When harness connector of accelerator pedal position sensor is disconnected, perform
Accelerator Pedal Released Position Learning. Refer to EC-18, «ACCELERATOR PEDAL
RELEASED POSITION LEARNING : Description». See: Testing and Inspection/Programming and
Relearning/Accelerator Pedal Released Position Learning

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Air Flow Meter/Sensor > Component Information > Technical Service Bulletins > Engine Controls — Air Flow
Meter Service Procedure > Page 2438

2. Remove the airflow meter sensor from the airflow meter housing.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Air Flow Meter/Sensor > Component Information > Technical Service Bulletins > Engine Controls — Air Flow
Meter Service Procedure > Page 2439

Air Flow Meter/Sensor: Locations

Inspect air duct and resonator assembly for crack or tear. ^
If anything is found, replace air duct and resonator assembly.

Intake Air Temperature Sensor: Locations

Body Control Module: Diagrams
TERMINAL LAYOUT
PHYSICAL VALUES

Terminal And Reference Values (Part 1)

Terminal And Reference Values (Part 2)

Terminal And Reference Values (Part 3)

Terminal And Reference Values (Part 4)

Terminal And Reference Values (Part 5)

Terminal And Reference Values (Part 6)

Terminal And Reference Values (Part 7)

Terminal And Reference Values (Part

Terminal And Reference Values (Part 9)

Terminal And Reference Values (Part 10)

Terminal And Reference Values (Part 11)

Terminal And Reference Values (Part 12)

Terminal And Reference Values (Part 13)

Terminal And Reference Values (Part 14)

Terminal And Reference Values (Part 15)

Terminal And Reference Values (Part 16)

Terminal And Reference Values (Part 17)

Camshaft Position Sensor: Locations

Crankshaft Position Sensor: Locations

Electronic Throttle Actuator: Locations

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2497

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.
A. On your C-III screen look at the Part Number column (see Figure 1):

^ If this column is blank (no part number listed) this bulletin does not apply. Close C-III and refer to
ASIST for further diagnostic information.
^ If a Part Number is listed write it on the Repair Order.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2498

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2499

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2500

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2501

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-076A
> Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2502

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2507

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2508

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2509

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
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> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2510

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2511

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 10-010C
> Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2512

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 08-028B
> Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 08-028B
> Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2517

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:
A. On your C-III screen, look at the Part Number column (see Figure 1):

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G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > Customer Interest: > 08-028B
> Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2518

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2524

CAUTION
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm this bulletin applies
as follows.
A. On your C-III screen look at the Part Number column (see Figure 1):

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2526

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2527

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-076A > Apr > 11 > Engine Controls — MIL ON/DTC P1421 Stored > Page 2528

1. Restart the C-III session by selecting the Home icon in the upper left corner of the screen (see
Figure 3).

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2534

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2535

Repair Overview Flowchart
SERVICE PROCEDURE
ECM REPROGRAMMING
1. Begin the reprogramming procedure.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
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Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2536

Caution
2. When you get to the ECM Reprogramming screen shown in Figure 1 confirm reprogramming is
needed as follows:

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2537

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2538

B. Compare the Part Number you wrote down to the numbers in the Current ECM Part Number
column in Table A.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-010C > Sep > 10 > Engine Controls — Low Battery Voltage/No Start > Page 2539

^ Diagnosis and repairs beyond the ones described in the Repair Overview are not covered by this
bulletin.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
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Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2546

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2547

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2548

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2549

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2550

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2551

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2552

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2553

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2554

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2555

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2556

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2557

Attachment — General Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2562

2. When you get to the ECM Reprogramming screen shown in Figure 1, confirm this bulletin
applies as follows:
A. On your C-III screen, look at the Part Number column (see Figure 1):

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 08-028B > Oct > 09 > Engine Controls — Ticking Noise From Left Bank Of Engine > Page 2563

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2568

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2569

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2570

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2571

d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2572

^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2573

b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2574

e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2575

h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins
for Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2576

k. Turn the ignition switch OFF and wait at least 10 seconds.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery

Engine Control Module: All Technical Service Bulletins Engine Controls — ECM Programming
Interruption Recovery

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2582

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2583

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2584

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2585

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2586

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2587

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2588

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2589

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2590

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2591

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2592

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2593

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2594

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 10-038 > Jun > 10 > Engine Controls — ECM Programming Interruption Recovery > Page 2595

Attachment — General Procedure

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures

Technical Service Bulletin # 00-038C Date: 040416

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2600

CLAIMS INFORMATION

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2601

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2602

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2603

d. Press [START] on the «IDLE AIR VOL LEARN» screen. See Figure 4.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2604

^ CONSULT will display «CMPLT» in the top right corner of the screen when the IAVL procedure is
finished. See Figure 7.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2605

b. Select [WORK SUPPORT] on the select Diag Mode screen. See Figure 9.

c. Scroll down and select [VIN REGISTRATION] on the select Work Item screen. See Figure 10.
d. Press [START] on the «VIN Registration» screen. See Figure 11.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2606

e. Select [INPUT] on the «VIN Registration» screen. See Figure 12.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2607

h. Select [INPUT] on the VIN Registration screen and enter the entire VIN again. See Figure 15.

Infiniti G37 Coupe Workshop Manual (V6-3.7L (VQ37VHR) (2008))
G37 Coupe V6-3.7L (VQ37VHR) (2008) > Infiniti Workshop Manuals > Powertrain Management > Computers and Control
Systems > Engine Control Module > Component Information > Technical Service Bulletins > All Other Service Bulletins for
Engine Control Module: > 00-038C > Apr > 04 > Engine Controls — ECM Replacement Procedures > Page 2608

k. Turn the ignition switch OFF and wait at least 10 seconds.

Engine Control Module: Locations

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)
Terminals And Reference Values (Part 12)

Terminals And Reference Values (Part 1)

Terminals And Reference Values (Part 2)

Terminals And Reference Values (Part 3)

Terminals And Reference Values (Part 4)

Terminals And Reference Values (Part 5)

Terminals And Reference Values (Part 6)

Terminals And Reference Values (Part 7)

Terminals And Reference Values (Part

Terminals And Reference Values (Part 9)

Terminals And Reference Values (Part 10)

Terminals And Reference Values (Part 11)
Terminals And Reference Values (Part 12)

Information Bus: Diagram Information and Instructions
How to Read Harness Layout
HARNESS LAYOUT
How To Read Harness Layout
CONNECTOR SYMBOL
How to Read Wiring Diagrams
HOW TO READ WIRING DIAGRAMS
Connector symbols
Most of connector symbols in wiring diagrams are shown from the terminal side.

Description

SWITCH POSITIONS
Switches are shown in wiring diagrams as if the vehicle is in the «normal» condition. A vehicle is in
the «normal» condition when:

Standardized Relay
STANDARDIZED RELAY
Description
NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
TYPE OF STANDARDIZED RELAYS

Information Bus: Electrical Diagrams
CAN COMMUNICATION SYSTEM

Wiring Diagram — CAN SYSTEM Wiring Diagram — CAN System — Part 1

Wiring Diagram — CAN System — Part 2

Wiring Diagram — CAN System — Part 3

Wiring Diagram — CAN System — Part 4

Wiring Diagram — CAN System — Part 5

Wiring Diagram — CAN System — Part 6

Information Bus: Customer Safety Information
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) «AIR BAG» and «SEAT BELT
PRE-TENSIONER»
The Supplemental Restraint System such as «AIR BAG» and «SEAT BELT PRE-TENSIONER»,
used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front
passenger for certain types of collision. This system includes seat belt switch inputs and dual stage
front air bag modules. The SRS system uses the seat belt switches to determine the front air bag
deployment, and may only deploy one front air bag, depending on the severity of a collision and
whether the front occupants are belted or unbelted. Information necessary to service the system
safely is included in the «SRS AIRBAG» and «SEAT BELT».
WARNING:
— To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN/INFINITI dealer.
— Improper maintenance, including incorrect removal and installation of the SRS, can lead to
personal injury caused by unintentional activation of the system. For removal of Spiral Cable and
Air Bag Module, see the «SRS AIRBAG».
— Do not use electrical test equipment on any circuit related to the SRS unless instructed. SRS
wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Information Bus: Technician Safety Information
Precaution For Battery Service
Precaution for Battery Service
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent
any interference between the window edge and the vehicle when the door is opened/closed. During
normal operation, the window slightly raises and lowers automatically to prevent any window to
vehicle interference. The automatic window function will not work with the battery disconnected.
Supplemental Restraint System (SRS) «Air Bag» and «Seat Belt Pre-Tensioner»
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) «AIR BAG» and «SEAT BELT
PRE-TENSIONER»
The Supplemental Restraint System such as «AIR BAG» and «SEAT BELT PRE-TENSIONER»,
used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front
passenger for certain types of collision. This system includes seat belt switch inputs and dual stage
front air bag modules. The SRS system uses the seat belt switches to determine the front air bag
deployment, and may only deploy one front air bag, depending on the severity of a collision and
whether the front occupants are belted or unbelted. Information necessary to service the system
safely is included in the «SRS AIRBAG» and «SEAT BELT».
WARNING:
— To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN/INFINITI dealer.
— Improper maintenance, including incorrect removal and installation of the SRS, can lead to
personal injury caused by unintentional activation of the system. For removal of Spiral Cable and
Air Bag Module, see the «SRS AIRBAG».
— Do not use electrical test equipment on any circuit related to the SRS unless instructed. SRS
wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Information Bus: Vehicle Damage Warnings
Precautions For Trouble Diagnosis
PRECAUTIONS
Precautions for Trouble Diagnosis
CAUTION:
— Never apply 7.0 V or more to the measurement terminal.
— Use a tester with open terminal voltage of 7.0 V or less.

— Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness.
Precautions For Harness Repair
Precautions for Harness Repair
— Solder the repaired area and wrap tape around the soldered area.
NOTE: A fray of twisted lines must be within 110 mm (4.33 in).
— Bypass connection is never allowed at the repaired area.
NOTE: Bypass connection may cause CAN communication error. The spliced wire becomes
separated and the characteristics of twisted line are lost.
— Replace the applicable harness as an assembly if error is detected on the shield lines of CAN
communication line.
Precaution For Battery Service
Precaution for Battery Service
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent
any interference between the window edge and the vehicle when the door is opened/closed. During
normal operation, the window slightly raises and lowers automatically to prevent any window to
vehicle interference. The automatic window function will not work with the battery disconnected.
Precautions For Trouble Diagnosis
Precautions for Trouble Diagnosis
CAUTION:
— Never apply 7.0 V or more to the measurement terminal.
— Use a tester with open terminal voltage of 7.0 V or less.
— Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness.
Precautions For Harness Repair
Precautions for Harness Repair

— Solder the repaired area and wrap tape around the soldered area.
NOTE: A fray of twisted lines must be within 110 mm (4.33 in).
— Bypass connection is never allowed at the repaired area.
NOTE: Bypass connection may cause CAN communication error. The spliced wire becomes
separated and the characteristics of twisted line are lost.
— Replace the applicable harness as an assembly if error is detected on the shield lines of CAN
communication line.
Supplemental Restraint System (SRS) «Air Bag» and «Seat Belt Pre-Tensioner»

PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) «AIR BAG» and «SEAT BELT
PRE-TENSIONER»
The Supplemental Restraint System such as «AIR BAG» and «SEAT BELT PRE-TENSIONER»,
used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front
passenger for certain types of collision. This system includes seat belt switch inputs and dual stage
front air bag modules. The SRS system uses the seat belt switches to determine the front air bag
deployment, and may only deploy one front air bag, depending on the severity of a collision and
whether the front occupants are belted or unbelted. Information necessary to service the system
safely is included in the «SRS AIRBAG» and «SEAT BELT».
WARNING:
— To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN/INFINITI dealer.
— Improper maintenance, including incorrect removal and installation of the SRS, can lead to
personal injury caused by unintentional activation of the system. For removal of Spiral Cable and
Air Bag Module, see the «SRS AIRBAG».
— Do not use electrical test equipment on any circuit related to the SRS unless instructed. SRS
wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Information Bus: Application and ID CAN System Specification Chart
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
CAN System Specification Chart
Determine CAN system type from the following specification chart.
NOTE: Refer to LAN-16, «Trouble Diagnosis Procedure» for how to use CAN system specification
chart. See: Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN
Fundamental/Diagnosis and Repair Workflow
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE: Check CAN system type from the vehicle shape and equipment.

Information Bus: Application and ID CAN Communication Signal Chart
CAN Communication Signal Chart
Refer to LAN-15, «How to Use CAN Communication Signal Chart» for how to use CAN
communication signal chart. See: Testing and Inspection/Initial Inspection and Diagnostic
Overview/CAN Fundamental/Trouble Diagnosis
NOTE: Refer to LAN-21, «Abbreviation List» for the abbreviations of the connecting units. See:
Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Fundamental/Abbreviation
List
CAN Communication Signal Chart (Part 1)

CAN Communication Signal Chart (Part 2)

CAN Communication Signal Chart (Part 3)

CAN Communication Signal Chart (Part 4)

NOTE: CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is
omitted.

Information Bus: Description and Operation CAN Communication System
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
System Description
— CAN communication is a multiplex communication system. This enables the system to transmit
and receive large quantities of data at high speed by connecting control units with two
communication lines (CAN-H and CAN-L).
— Control units on the CAN network transmit signals using the CAN communication control circuit.
They receive only necessary signals from other control units to operate various functions.

— CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
System Diagram
Each control unit passes an electric current to the termination circuits when transmitting CAN
communication signal. The termination circuits produce an electrical potential difference between
CAN-H and CAN-L. CAN communication system transmits and receives CAN communication
signals by the potential difference.
CAN Communication Control Circuit

Information Bus: Description and Operation Diag ON CAN
DIAG ON CAN
Description
«Diag on CAN» is a diagnosis using CAN communication instead of previous DDL1 and DDL2
communication lines, between control units and diagnosis unit.
System Diagram

Information Bus: Initial Inspection and Diagnostic Overview
Trouble Diagnosis
TROUBLE DIAGNOSIS
Condition of Error Detection
«U1000» or «U1001» is indicated on SELF-DIAG RESULTS on CONSULT-III if CAN communication
signal is not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR
— CAN communication line open (CAN-H, CAN-L, or both)
— CAN communication line short (ground, between CAN communication lines, other harnesses)
— Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN «U1000» OR «U1001» IS INDICATED EVEN THOUGH CAN COMMUNICATION SYSTEM
IS NORMAL
— Removal/installation of parts: Error may be detected when removing and installing CAN
communication unit and related parts while turning the ignition switch ON. (A DTC except for CAN
communication may be detected.)
— Fuse blown out (removed): CAN communication of the unit may cease.

— Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the
ignition switch ON (Depending on the control unit which carries out CAN communication).
— Error may be detected if the power supply circuit of the control unit, which carries out CAN
communication, malfunctions (Depending on the control unit which carries out CAN
communication).
— Error may be detected if reprogramming is not completed normally.
NOTE: CAN communication system is normal if «U1000» or «U1001» is indicated on SELF-DIAG
RESULTS of CONSULT-III under the above conditions. Erase the memory of the self-diagnosis of
each unit.
Symptom When Error Occurs in CAN Communication System
In CAN communication system, multiple units mutually transmit and receive signals. Each unit
cannot transmit and receive signals if any error occurs on CAN communication line. Under this
condition, multiple control units related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
— Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line
wiring.
— Refer to LAN-21, «Abbreviation List» for the unit abbreviation. See: CAN
Fundamental/Abbreviation List

Example: TCM branch line open circuit
Example: Data link connector branch line open circuit

NOTE:
— When data link connector branch line is open, transmission and reception of CAN communication
signals are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning
circuit.
— The model (all units on CAN communication system are Diag on CAN) cannot perform CAN
diagnosis with CONSULT-III if the following error occurs. The error is judged by the symptom.
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control
Unit) Open Circuit

Example: CAN-H, CAN-L Harness Short Circuit

CAN Diagnosis with CONSULT-III
CAN diagnosis on CONSULT-III extracts the root cause by receiving the following information.
— Response to the system call
— Control unit diagnosis information
— Self-diagnosis
— CAN diagnostic support monitor
Self-Diagnosis
U1000-U1010
CAN Diagnostic Support Monitor
MONITOR ITEM (CONSULT-III)

MONITOR ITEM (ON-BOARD DIAGNOSIS)

NOTE: For some models, CAN communication diagnosis result is received from the vehicle
monitor.

How to Use CAN Communication Signal Chart

The CAN communication signal chart lists the signals needed for trouble diagnosis. It is useful for
detecting the root cause by finding a signal related to the symptom, and by checking transmission
and reception unit.
Diagnosis and Repair Workflow
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Trouble Diagnosis Flow Chart

Trouble Diagnosis Procedure
INTERVIEW WITH CUSTOMER
Interview with the customer is important to detect the root cause of CAN communication system
errors and to understand vehicle condition and symptoms for proper trouble diagnosis.
Points in interview
— What: Parts name, system name
— When: Date, Frequency
— Where: Road condition, Place
— In what condition: Driving condition/environment

— Result: Symptom
NOTE:
— Check normal units as well as error symptoms. Example: Circuit between ECM and the combination meter is judged normal if the customer
indicates tachometer functions normally.
— When a CAN communication system error is present, multiple control units may malfunction or go
into fail-safe mode.
— Indication of the combination meter is important to detect the root cause because it is the most
obvious to the customer, and it performs CAN communication with many units.

INSPECTION OF VEHICLE CONDITION
Check whether the symptom is reproduced or not.
NOTE: Do not turn the ignition switch OFF or disconnect the battery cable while reproducing the
error. The error may temporarily correct itself, making it difficult to determine the root cause.
CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION CHART)
Determine CAN system type based on vehicle equipment.
NOTE:
— This chart is used if CONSULT-III does not automatically recognize CAN system type.
— There are two styles for CAN system type specification charts. Depending on the number of
available system types, either style A or style B may be used.
CAN System Type Specification Chart (Style A)
NOTE: CAN system type is easily checked with the vehicle equipment identification information
shown in the chart.

CAN System Type Specification Chart (Style B)
NOTE: CAN system type is easily checked with the vehicle equipment identification information
shown in the chart.

CREATE INTERVIEW SHEET
Fill out the symptom described by the customer, vehicle condition, and CAN system type on the
interview sheet.
Interview Sheet (Example)

DETECT THE ROOT CAUSE
CAN diagnosis function of CONSULT-III detects the root cause.

Information Bus: Component Tests and General Diagnostics
Malfunction Area Chart
MALFUNCTION AREA CHART
Main Line

Branch Line
Short Circuit
Main Line Between BCM and DLC Circuit
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE

Step 1
Main Line Between DLC and ADP Circuit
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE

Step 1-3
Main Line Between ADP and ABS Circuit
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure

Step 1-4

ECM Branch Line Circuit
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
A-Bag Branch Line Circuit

A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1
AV Branch Line Circuit
AV BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
PSB Branch Line Circuit
PSB BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
TCM Branch Line Circuit
TCM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
BCM Branch Line Circuit
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
AFS Branch Line Circuit
AFS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

DLC Branch Line Circuit
DLC BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-2
M&A; Branch Line Circuit

M&A; BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-3
STRG Branch Line Circuit
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
RAS Branch Line Circuit
RAS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ADP Branch Line Circuit
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ABS Branch Line Circuit
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ICC Branch Line Circuit
ICC BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
IPDM-E Branch Line Circuit
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
CAN Communication Circuit
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure

Step 1-5

Step 5 (Continued)-6

ADP Branch Line Circuit
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

Main Line Between ADP and ABS Circuit
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure
Step 1-4

Main Line Between BCM and DLC Circuit
COMPONENT DIAGNOSIS
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE
Step 1
ECM Branch Line Circuit
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
A-Bag Branch Line Circuit
A-BAG BRANCH LINE CIRCUIT

Diagnosis Procedure
Step 1
AV Branch Line Circuit
AV BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
BCM Branch Line Circuit
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

DLC Branch Line Circuit
DLC BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-2
M&A; Branch Line Circuit
M&A; BRANCH LINE CIRCUIT

Diagnosis Procedure
Step 1-3
Main Line Between DLC and ADP Circuit
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE

Step 1-3
STRG Branch Line Circuit
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ABS Branch Line Circuit
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
IPDM-E Branch Line Circuit
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
CAN Communication Circuit
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure

Step 1-5

Step 5 (Continued)-6
A-Bag Branch Line Circuit
A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1
ABS Branch Line Circuit
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ADP Branch Line Circuit
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
AV Branch Line Circuit
AV BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
BCM Branch Line Circuit
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
CAN Communication Circuit
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure

Step 1-5

Step 5 (Continued)-6

DLC Branch Line Circuit
DLC BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-2
ECM Branch Line Circuit
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
IPDM-E Branch Line Circuit
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
M&A; Branch Line Circuit
M&A; BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
Main Line Between ADP and ABS Circuit
MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure

Step 1-4

Main Line Between BCM and DLC Circuit
COMPONENT DIAGNOSIS
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure

INSPECTION PROCEDURE
Step 1
Main Line Between DLC and ADP Circuit
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE

Step 1-3
RAS Branch Line Circuit
RAS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
STRG Branch Line Circuit
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
AFS Branch Line Circuit
AFS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ICC Branch Line Circuit
ICC BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

Main Line Between BCM and DLC Circuit
COMPONENT DIAGNOSIS
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE
Step 1

Main Line Between DLC and ADP Circuit
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE
Step 1-3
Main Line Between ADP and ABS Circuit
MAIN LINE BETWEEN ADP AND ABS CIRCUIT

Diagnosis Procedure

Step 1-4

ECM Branch Line Circuit
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
A-Bag Branch Line Circuit

A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1
AV Branch Line Circuit
AV BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
BCM Branch Line Circuit
BCM BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

DLC Branch Line Circuit
DLC BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-2
M&A; Branch Line Circuit
M&A; BRANCH LINE CIRCUIT

Diagnosis Procedure
Step 1-3
PSB Branch Line Circuit
PSB BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
STRG Branch Line Circuit
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ADP Branch Line Circuit
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
ABS Branch Line Circuit
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
IPDM-E Branch Line Circuit
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3
CAN Communication Circuit
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure

Step 1-5

Step 5 (Continued)-6

AFS Branch Line Circuit
AFS BRANCH LINE CIRCUIT
Diagnosis Procedure
Step 1-3
ICC Branch Line Circuit
ICC BRANCH LINE CIRCUIT
Diagnosis Procedure

Step 1-3

Main Line Between BCM and DLC Circuit
COMPONENT DIAGNOSIS
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE

Step 1
Main Line Between DLC and ADP Circuit
MAIN LINE BETWEEN DLC AND ADP CIRCUIT
Diagnosis Procedure
INSPECTION PROCEDURE
Step 1-3
Main Line Between ADP and ABS Circuit

MAIN LINE BETWEEN ADP AND ABS CIRCUIT
Diagnosis Procedure