2008 INFINITI QX56 belt

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PG-1
ELECTRICAL & POWER CONTROL
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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
PRECAUTION .......
........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Power Generation Variable Voltage
Control System ..........................................................
3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
BASIC INSPECTION ....................................5
BATTERY ....................................................... .....5
How to Handle Battery ........................................ ......5
Work Flow ........................................................... ......7
INSPECTION AND ADJUSTMENT .....................8
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ......
8
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement ................................................. ......
8
COMPONENT DIAGNOSIS ..........................9
POWER SUPPLY ROUTING CIRCUIT .......... .....9
Wiring Diagram — Battery Power Supply — ....... ......9
Wiring Diagram — Accessory Power Supply — .....17
Wiring Diagram — Ignition Power Supply — ....... ....21
Fuse .........................................................................29
Fusible Link .............................................................29
GROUND ...........................................................30
Ground Distribution ..................................................30
HARNESS .........................................................40
Harness Layout ................................................... ....40
ELECTRICAL UNITS LOCATION ....................62
Electrical Units Location ..........................................62
HARNESS CONNECTOR .................................65
Description ...............................................................65
STANDARDIZED RELAY .................................68
Description ...............................................................68
FUSE BLOCK - JUNCTION BOX (J/B) ............70
Terminal Arrangement .............................................70
FUSE, FUSIBLE LINK AND RELAY BOX ........71
Terminal Arrangement .............................................71
ON-VEHICLE REPAIR .................................73
BATTERY ..........................................................73
Removal and Installation ..................................... ....73
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
74
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
74
Battery ................................................................. ....74
Revision: March 2010 2008 QX56

PG-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004913900
The Supplemental Restraint System such as “A IR 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004913899
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

PG
HARNESSPG-53
< COMPONENT DIAGNOSIS >
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BODY NO. 2 HARNESS
C5 B10 Y/2 : Front LH side air bag module
C5 B13 W/24 : ICC unit
C4 B14 Y/2 : Front LH seat belt pre-tensioner
C5 B15 Y/2 : LH side air bag (satellite) sensor
C5 B17 GR/24 : ICC unit
D4 B18 W/3 : Rear door switch LH
G3 B19 — : Body ground
B4 B32 W/6 : To B124
G5 B35 B/3 : Rear combination lamp LH
B4 B37 W/16 : To B200
A3 B38 Y/2 : LH side front curtain air bag module
A4 B40 W/24 : To E34
A4 B41 W/12 : To E35
A4 B42 W/2 : To E36
B4 B43 W/16 : To B111
G3 B48 W/18 : To D401
F3 B49 W/2 : To D402
F4 B52 W/2 : Rear power vent window motor LH
E4 B54 Y/2 : LH side rear curtain air bag module
F5 B55 W/26 : Back door control unit
F4 B56 GR/16 : Sonar control unit
G4 B63 W/6 : Back door close switch
A4 B69 SMJ : To M40
G4 B70 B/3 : Rear combination lamp LH
B4 B72 BR/6 : Subwoofer
E5 B73 W/16 : Rear view camera control unit
C4 B74 Y/4
: Seat belt buckle pretensioner assembly
LH (seatbelt buckle switch)
F5 B75 W/10 : To B400
F5 B76 GR/2 : Inside key antenna 2 (luggage
compartment)
Revision: March 2010
2008 QX56

PG-54
< COMPONENT DIAGNOSIS >
HARNESS
G4 B101 W/16 : To M84
A4 B105 B/3 : Rear combination lamp RH
E4 B106 W/18 : To D301
G4 B107 W/8 : To E139
E4 B108 W/3 : Front door switch RH
G 3 B 111 W / 1 6 : To B 4 3
E4 B113 Y/12 : Air bag diagnosis sensor unit
E5 B114 Y/2 : RH side air bag (satellite) sensor
D4 B116 W/3 : Rear door switch RH
F4 B117 — : Body ground
F4 B118 W/3 : Front seat heater RH
A4 B119 W/2 : Condenser-3
A3 B120 W/2 : Condenser-4
F4 B124 W/6 : To B32
F4 B126 Y/2 : Front RH side air bag module
E5 B127 Y/2 : Front RH seat belt pre-tensioner
C3 B128 Y/2 : RH side rear curtain air bag module
G3 B129 Y/2 : RH side front curtain air bag module
A4 B130 B/3 : Rear combination lamp RH
A5 B132 — : Body ground
A5 B133 W/4 : Variable blower control (rear)
B5 B134 W/2 : Rear blower motor
E4 B136 W/8 : To B350
E4 B137 W/3 : Belt tension sensor
B3 B138 B/3 : Rear cargo power socket
A3 B139 W/16 : To D602
A2 B140 W/6 : To D601
D2 B145 W/16 : To R200
E2 B146 BR/24 : To R201
G3 B149 SMJ : To M36
B3 B150 W/2 : Rear power vent window motor RH
B2 B153 W/2 : Cargo lamp
F5 B154 W/2 : To B303
B4 B155 B/6 : Air mix door motor (rear)
B4 B156 B/6 : Mode door motor (rear)
F4 B157 Y/4 : Seat belt buckle pre-tensioner assembly
RH (seat belt buckle switch)
G4 B161 W/20 : To M157
C4 B162 W/6 : Third row power folding seat switch
RH side (front)
B4 B163 BR/6 : Third row power folding seat switch
RH side (rear)
C4 B164 BR/6 : Third row power folding seat switch
LH side (front)
Revision: March 2010
2008 QX56

PG
HARNESS CONNECTORPG-67
< COMPONENT DIAGNOSIS >
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• Always confirm the lever is full
y released (loosened) before attempting to disconnect or connect
these connectors to avoid damage to the connector housing or terminals.
HARNESS CONNECTOR (DIRECT-CONNECT SRS COMPONENT TYPE)
• SRS direct-connect type harness connectors are used on certain SRS components such as air bag modules
and seat belt pre-tensioners.
• Always pull up to release black locking tab prior to removing connector from SRS components.
• Always push down to lock black locking tab after in stalling connector to SRS components. When locked, the
black locking tab is level with the connector housing.
CAUTION:
• Do not pull the harness or wir es when removing connectors
from SRS components.
1. Control unit with single lever 2. Control unit with dual lever 3. SMJ connector
A. Fasten A. FastenA. Fasten
B.Loosen B.LoosenB.Loosen
C.Lever C.Lever C.Lever
LKIA0670E
WHIA0103E
Revision: March 2010 2008 QX56

PWC-3
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ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (PASSENGER SIDE) ................ ..
101
Diagnosis Procedure ........................................... ..101
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (REAR LH SIDE) .........................
102
Diagnosis Procedure ........................................... ..102
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (REAR RH SIDE) ........................
103
Diagnosis Procedure ........................................... ..103
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(DRIVER SIDE) .................................................
104
Diagnosis Procedure .............................................104
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(PASSENGER SIDE) ...................................... ..
105
Diagnosis Procedure ........................................... ..105
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(REAR LH SIDE) ..............................................
106
Diagnosis Procedure ........................................... ..106
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATES NORMALLY
(REAR RH SIDE) ..............................................
107
Diagnosis Procedure ........................................... ..107
POWER WINDOW RETAINED POWER OP-
ERATION DOES NOT OPERATE PROPERLY
..
108
Diagnosis Procedure ........................................... ..108
DOES NOT OPERATE BY KEY CYLINDER
SWITCH ...........................................................
109
Diagnosis Procedure ........................................... ..109
KEYLESS POWER WINDOW DOWN DOES
NOT OPERATE ...............................................
110
Diagnosis Procedure .............................................110
POWER WINDOW LOCK SWITCH DOES
NOT FUNCTION ..............................................
111
Diagnosis Procedure .............................................111
REAR POWER VENT WINDOWS DO NOT
OPERATE .......................................................
112
Diagnosis Procedure .............................................112
PRECAUTION ............................................113
PRECAUTIONS ...............................................113
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
113
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
113
ON-VEHICLE REPAIR ...............................115
POWER WINDOW MAIN SWITCH .................115
Removal and Installation ..................................... ..115
FRONT POWER WINDOW SWITCH ..............116
Removal and Installation .......................................116
REAR POWER WINDOW SWITCH ................117
Removal and Installation .......................................117
REAR POWER VENT WINDOW SWITCH .....118
Removal and Installation .......................................118
Revision: March 2010 2008 QX56

PRECAUTIONSPWC-113
< PRECAUTION >
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PWC
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004857563
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 severi ty 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 w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000004857565
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

PWO
PWO-1
ELECTRICAL & POWER CONTROL
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CONTENTS
POWER OUTLET
PRECAUTION .......
........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
COMPONENT DIAGNOSIS ..........................5
POWER SOCKET ..............................................5
Wiring Diagram .................................................... .....5
ON-VEHICLE REPAIR ..................................8
POWER SOCKET ..............................................8
Front Power Socket RH (For Cigarette Lighter),
Console Power Socket ........................................ .....
8
Front Power Socket LH, Rear Cargo Power Sock-
et ...............................................................................
8
Revision: March 2010 2008 QX56