2008 INFINITI QX56 Seat

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
STRStarting System
ACCAccelerator Control System
CHYBRIDHBCHybrid Control System
HBBHybrid Battery System
HBRHybrid Brake System
DTRANSMISSION & DRIVE-
LINETMTransaxle & Transmission
DLNDriveline
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
SCSSuspension Control System
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGSTSteering System
STCSteering Control System
HRESTRAINTSSBSeat Belt
SBCSeat Belt Control System
SRSRS Airbag
SRCSRS Airbag Control System
IVENTILATION, HEATER &
AIR CONDITIONERVTLVentilation System
HAHeater & Air Conditioning System
HACHeater & Air Conditioning Control System
JBODY INTERIORINTInterior
IPInstrument Panel
SESeat
ADPAutomatic Drive Postioner
APAdjustable Pedal
KBODY EXTERIOR,
DOORS, ROOF & VEHICLE
SECURITYDLKDoor & Lock
SECSecurity Control System
GWGlass & Window System
PWCPower Window Control System
RFRoof
EXTExterior
BRMBody Repair Manual
LDRIVER CONTROLSMIRMirrors
EXLExterior Lighting System
INLInterior Lighting System
WWWiper & Washer
DEFDefogger
HRNHorn
MELECTRICAL & POWER
CONTROLPWOPower Outlet
BCSBody Control System
LANLAN System
PCSPower Control System
CHGCharging System
PGPower Supply, Ground & Circuit Elements
NDRIVER INFORMATION &
MULTIMEDIAMWIMeter, Warning Lamp & Indicator
WCSWarning Chime System
SNSonar System
AVAudio, Visual & Navigation System
OCRUISE CONTROLCCSCruise Control System
PMAINTENANCEMAMaintenance
All rights reserved. No part
of this Service Manual may
be reproduced or stored in a
retrieval system, or transmit-
ted in any form, or by any
means, electronic, mechani-
cal, photo-copying, record-
ing or otherwise, without the
prior written permission of
Nissan North America, Inc.
Edition: May 2007
Revision: March 2010
Publication No. SM8E-1J60U2

ACC-1
ENGINE
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SECTION ACC
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CONTENTS
ACCELERATOR CONTROL SYSTEM
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
REMOVAL AND INSTALLATION ................4
ACCELERATOR CONTROL SYSTEM ..............4
Removal and Installation ..................................... .....4
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ....
6
SERVICE DATA AND SPECIFICATIONS
(SDS) ..................................................................
6
Accelerator Control .............................................. .....6
Revision: March 2010 2008 QX56

ACC-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004874943
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:0000000004874942
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

ADP-1
BODY INTERIOR
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SECTION ADP
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CONTENTS
AUTOMATIC DRIVE POSITIONER
BASIC INSPECTION ....... .............................5
DIAGNOSIS AND REPAIR WORKFLOW ..... .....5
Work Flow ........................................................... ......5
INSPECTION AND ADJUSTMENT .....................8
Preliminary Check ............................................... ......8
Special Repair Requirement .....................................8
FUNCTION DIAGNOSIS .. .............................9
AUTOMATIC DRIVE POSITIONER SYSTEM .....9
AUTOMATIC DRIVE POSITIONER SYSTEM ....... ......9
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Diagram ........................................................
9
AUTOMATIC DRIVE POSITIONER SYSTEM :
Component Parts Location ......................................
10
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description .................................................
10
AUTOMATIC DRIVE POSITIONER SYSTEM :
Component Description ..........................................
11
MANUAL FUNCTION ............................................ ....12
MANUAL FUNCTION : System Diagram ................13
MANUAL FUNCTION : System Description ............13
MANUAL FUNCTION : Component Parts Loca-
tion ..........................................................................
15
MANUAL FUNCTION : Component Description ....15
MEMORY FUNCTION ........................................... ....16
MEMORY FUNCTION : System Diagram ...............17
MEMORY FUNCTION : System Description ..........17
MEMORY FUNCTION : Component Parts Loca-
tion ..........................................................................
18
MEMORY FUNCTION : Component Description ....19
EXIT ASSIST FUNCTION ...................................... ....20
EXIT ASSIST FUNCTION : System Diagram .........20
EXIT ASSIST FUNCTION : System Description . ....20
EXIT ASSIST FUNCTION : Component Parts Lo-
cation .......................................................................
21
EXIT ASSIST FUNCTION :
Component Description ...................................... ....
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ENTRY ASSIST FUNCTION .................................. ....22
ENTRY ASSIST FUNCTION : System Diagram .....23
ENTRY ASSIST FUNCTION : System Description
....
23
ENTRY ASSIST FUNCTION : Component Parts
Location ...................................................................
24
ENTRY ASSIST FUNCTION :
Component Description ..........................................
25
DIAGNOSIS SYSTEM (DRIVER SEAT C/U) ....26
Diagnosis Description ..............................................26
CONSULT-III Function ............................................26
COMPONENT DIAGNOSIS .........................29
U1000 CAN COMM CIRCUIT ...........................29
Description ........................................................... ....29
DTC Logic ................................................................29
Diagnosis Procedure ..............................................29
Special Repair Requirement ....................................29
B2112 SLIDING MOTOR ..................................30
Description ...............................................................30
DTC Logic ................................................................30
Diagnosis Procedure ..............................................30
B2113 RECLINING MOTOR .............................31
Description ...............................................................31
DTC Logic ................................................................31
Diagnosis Procedure ..............................................31
B2114 SEAT LIFTER FR ..................................32
Description ...............................................................32
DTC Logic ................................................................32
Diagnosis Procedure ..............................................32
B2115 SEAT LIFTER RR ..................................33
Description ...............................................................33
DTC Logic ................................................................33
Revision: March 2010 2008 QX56

ADP-2
Diagnosis Procedure .............................................33
B2117 ADJ PEDAL MOTOR .............................34
Description ..............................................................34
DTC Logic ...............................................................34
Diagnosis Procedure .............................................34
B2118 TILT SENSOR ........................................36
Description ........................................................... ...36
DTC Logic ...............................................................36
Diagnosis Procedure .............................................36
B2120 ADJ PEDAL SENSOR ...........................38
Description ........................................................... ...38
DTC Logic ...............................................................38
Diagnosis Procedure .............................................38
B2126 DETENT SW ...........................................40
Description ........................................................... ...40
DTC Logic ...............................................................40
Diagnosis Procedure .............................................40
B2128 UART COMMUNICATION LINE ............42
Description ........................................................... ...42
DTC Logic ...............................................................42
Diagnosis Procedure .............................................42
POWER SUPPLY AND GROUND CIRCUIT .....44
BCM ........................................................................ ...44
BCM : Diagnosis Procedure ...................................44
BCM : Special Repair Requirement ........................44
DRIVER SEAT CONTROL UNIT ........................... ...44
DRIVER SEAT CONTROL UNIT :
Diagnosis Procedure .............................................
44
DRIVER SEAT CONTROL UNIT : Special Repair
Requirement ........................................................ ...
45
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT ....................................................................... ...
45
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : Diagnosis Procedure ............................... ...
45
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : Special Repair Re quirement .......................
45
SLIDING SWITCH ..............................................46
Description ........................................................... ...46
Component Function Check .................................46
Diagnosis Procedure .............................................46
Component Inspection ............................................47
RECLINING SWITCH ........................................48
Description ........................................................... ...48
Component Function Check .................................48
Diagnosis Procedure .............................................48
Component Inspection ............................................49
LIFTING SWITCH (FRONT) ..............................50
Description ........................................................... ...50
Component Function Check .................................50
Diagnosis Procedure .............................................50
Component Inspection ......................................... ...51
LIFTING SWITCH (REAR) ................................52
Description ........................................................... ...52
Component Function Check ..................................52
Diagnosis Procedure ..............................................52
Component Inspection ............................................53
TILT SWITCH ....................................................54
Description ........................................................... ...54
Component Function Check ..................................54
Diagnosis Procedure ..............................................54
Component Inspection ............................................55
PEDAL ADJUSTING SWITCH ..........................56
Description ........................................................... ...56
Component Function Check ..................................56
Diagnosis Procedure ..............................................56
Component Inspection ............................................58
SEAT MEMORY SWITCH .................................59
Description ..............................................................59
Component Function Check ..................................59
Diagnosis Procedure ..............................................59
Component Inspection ............................................60
DOOR MIRROR REMOTE CONTROL
SWITCH .............................................................
61
CHANGEOVER SWITCH ....................................... ...61
CHANGEOVER SWITCH : Description ..................61
CHANGEOVER SWITCH : Component Function
Check ......................................................................
61
CHANGEOVER SWITCH : Diagnosis Procedure ...61
CHANGEOVER SWITCH : Component Inspec-
tion ..........................................................................
62
MIRROR SWITCH .................................................. ...63
MIRROR SWITCH : Description .............................63
MIRROR SWITCH : Component Function Check ...63
MIRROR SWITCH : Diagnosis Procedure ..............63
MIRROR SWITCH : Component Inspection ...........65
POWER SEAT SWITCH GROUND CIRCUIT ...66
Diagnosis Procedure ..............................................66
DETENTION SWITCH .......................................67
Description ........................................................... ...67
Component Function Check ..................................67
Diagnosis Procedure ..............................................67
FRONT DOOR SWITCH (DRIVER SIDE) .........69
Description ........................................................... ...69
Component Function Check ...................................69
Diagnosis Procedure ...............................................69
Component Inspection ............................................69
SLIDING SENSOR ............................................71
Description ..............................................................71
Component Function Check ..................................71
Diagnosis Procedure ..............................................71
Revision: March 2010 2008 QX56

ADP-3
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RECLINING SENSOR .................................... ....73
Description .......................................................... ....73
Component Function Check ..................................73
Diagnosis Procedure ..............................................73
LIFTING SENSOR (FRONT) ..............................75
Description .......................................................... ....75
Component Function Check ..................................75
Diagnosis Procedure ..............................................75
LIFTING SENSOR (REAR) ................................77
Description .......................................................... ....77
Component Function Check ..................................77
Diagnosis Procedure ..............................................77
TILT SENSOR ....................................................79
Description ..............................................................79
Component Function Check ..................................79
Diagnosis Procedure ..............................................79
PEDAL ADJUSTING SENSOR ..........................81
Description .......................................................... ....81
Component Function Check ..................................81
Diagnosis Procedure ..............................................81
MIRROR SENSOR .............................................83
DRIVER SIDE ........................................................ ....83
DRIVER SIDE : Description ....................................83
DRIVER SIDE : Component Function Check ........83
DRIVER SIDE : Diagnosis Procedure ....................83
PASSENGER SIDE ...................................................85
PASSENGER SIDE : Description ....................... ....85
PASSENGER SIDE :
Component Function Check ..................................
85
PASSENGER SIDE : Diagnosis Procedure ...........85
SLIDING MOTOR ...............................................87
Description ..............................................................87
Component Function Check ..................................87
Diagnosis Procedure ..............................................87
RECLINING MOTOR ..........................................89
Description .......................................................... ....89
Component Function Check ..................................89
Diagnosis Procedure ..............................................89
LIFTING MOTOR (FRONT) ................................91
Description .......................................................... ....91
Component Function Check ..................................91
Diagnosis Procedure ..............................................91
LIFTING MOTOR (REAR) ..................................93
Description .......................................................... ....93
Component Function Check ..................................93
Diagnosis Procedure ..............................................93
TILT MOTOR ......................................................95
Description .......................................................... ....95
Component Function Check ..................................95
Diagnosis Procedure ..............................................95
PEDAL ADJUSTING MOTOR ..........................97
Description ........................................................... ....97
Component Function Check ..................................97
Diagnosis Procedure ..............................................97
DOOR MIRROR MOTOR ..................................99
Description ...............................................................99
Component Function Check ....................................99
Diagnosis Procedure ...............................................99
Component Inspection ...........................................101
SEAT MEMORY INDICATOR LAMP ..............102
Description .............................................................102
Component Function Check ................................102
Diagnosis Procedure ............................................102
Component Inspection ...........................................103
ECU DIAGNOSIS .......................................104
DRIVER SEAT CONTROL UNIT ....................104
Reference Value .................................................. ..104
Wiring Diagram ......................................................109
Fail Safe ................................................................122
DTC Index .............................................................123
AUTOMATIC DRIVE POSITIONER CON-
TROL UNIT ......................................................
124
Reference Value ....................................................124
Wiring Diagram ......................................................127
BCM (BODY CONTROL MODULE) ...............141
Reference Value ....................................................141
Terminal Layout .....................................................143
Physical Values ................................................... ..143
Wiring Diagram ......................................................149
Fail Safe ................................................................152
DTC Inspection Priority Chart .............................153
DTC Index .............................................................153
SYMPTOM DIAGNOSIS ............................155
ADP SYSTEM SYMPTOMS ............................155
Symptom Table ................................................... ..155
NORMAL OPERATING CONDITION .............157
Description .............................................................157
PRECAUTION ............................................158
PRECAUTIONS ...............................................158
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
158
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
158
Precaution for Work ...............................................159
ON-VEHICLE MAINTENANCE ..................160
PRE-INSPECTION FOR DIAGNOSTIC ..........160
Basic Inspection .................................................. ..160
Revision: March 2010 2008 QX56

ADP-8
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Preliminary CheckINFOID:0000000001735408
1. FOREIGN OBJECTS
Check the following:
• objects on or behind the seats that could cause binding
• objects under the seats that may be interfering with the seat’s moving parts
• objects under pedals that may interfere with movement
Are there any foreign objects that could be causing interference?
YES >> Remove objects.
NO >> GO TO 2
2. WIRING CONNECTIONS
1. Disconnect harness connectors.
2. Check terminals for damage or loose connections.
3. Reconnect harness connectors.
Are any connectors damaged or loose?
YES >> Repair or replace damaged parts.
NO >> GO TO 3
3. POWER AND GROUND
Check power supply and ground circuits for control unit. Refer to ADP-44, "
DRIVER SEAT CONTROL UNIT :
DiagnosisProcedure".
Is the inspection result normal?
YES >> Refer to ADP-123, "DTCIndex".
NO >> Repair or replace as necessary.
Special Repair RequirementINFOID:0000000001735409
Refer to Owner’s Manual for Automatic Driv e Positioner system operating instructions.
Revision: March 2010 2008 QX56

ADP-10
< FUNCTION DIAGNOSIS >
AUTOMATIC DRIVE POSITIONER SYSTEM
AUTOMATIC DRIVE POSITIONER SYSTEM : Component Parts Location
INFOID:0000000001735411
AUTOMATIC DRIVE POSITIONER SYSTEM : System DescriptionINFOID:0000000001735412
OUTLINE
The system automatically moves the driver seat, pedal assembly, steering wheel and door mirror position by
the driver seat control unit and the automatic drive posit ioner control unit. The driver seat control unit corre-
sponds with the automatic drive positioner control unit by UART communication.
ALJIA0235ZZ
1. A. Automatic drive positioner control
unit M33, M34
B. Pedal adjusting motor assembly
E109, E110 2. A. Steering column
B. Key switch and ignition knob
switch M12
C. BCM M18, M19, M20 (view with
instrument panel removed) 3. A. Door mirror remo
te control switch
D10
B. Seat memory switch D5
4. Pedal adjusting switch M96 5 . A. Door mirrror LH D4, RH D107
B. Front door switch LH B8
C. Front door lock assembly LH (key
cylinder switch) D14 6. A. A/T selector lever
B. A/T shift selector (park position
switch) M203
7. A. Sliding motor LH B204 (driver seat
view), reclining motor LH B205, lift-
ing motor (front) B206, lifting motor
(rear) B207
B. Driver seat control unit B202,
B203
C. Power seat switch LH B208 8. A. ADP sterring switch M16
B. Tilt sensor M85 and tilt motor M86
Revision: March 2010 2008 QX56