2008 INFINITI QX56 Factory Service Manual

CD player traction control turn signal ground clearance fuel fill door release transmission

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INFINITI QX56 2008 Factory Service Manual DEF-34
< ON-VEHICLE REPAIR >
REAR WINDOW DEFOGGER
• Drawing pen
• Heat gun
• Alcohol
• Cloth
REPAIRING PROCEDURE
1. Wipe broken heat wire and its surrounding area clean with acloth dampened in

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INFINITI QX56 2008 Factory Service Manual DLK-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
DOOR & LOCK
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... ............................

DLK-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
DOOR & LOCK
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... .............................
6
DIAGNOSIS AND REPAIR WORKFLOW ..... .....6
Work Flow ........................................................... ......6
INSPECTION AND ADJUSTMENT .....................9
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Description ......
9
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Special Re-
pair Requirement ................................................. ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ..................................
9
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
9
FUNCTION DIAGNOSIS ..............................10
DOOR LOCK FUNCTION .............................. ....10
DOOR LOCK AND UNLOCK SWITCH ................. ....10
DOOR LOCK AND UNLOCK SWITCH : System
Diagram ...................................................................
10
DOOR LOCK AND UNLOCK SWITCH : System
Description ..............................................................
10
DOOR LOCK AND UNLOCK SWITCH :
Component Parts Location ....................................
11
DOOR LOCK AND UNLOCK SWITCH :
Component Description ..........................................
11
DOOR REQUEST SWITCH ................................... ....12
DOOR REQUEST SWITCH : System Diagram ......12
DOOR REQUEST SWITCH : System Description ....12
DOOR REQUEST SWITCH :
Component Parts Location ....................................
15
DOOR REQUEST SWITCH :
Component Description ...................................... ....
17
INTELLIGENT KEY ................................................ ....17
INTELLIGENT KEY : System Diagram ....................17
INTELLIGENT KEY : System Description ...............17
INTELLIGENT KEY : Component Parts Location ....20
INTELLIGENT KEY : Component Description ........21
BACK DOOR OPENER FUNCTION .................23
BACK DOOR OPENER SWITCH .......................... ....23
BACK DOOR OPENER SWITCH : System Dia-
gram ........................................................................
23
BACK DOOR OPENER SWITCH : System De-
scription ...................................................................
23
BACK DOOR OPENER SWITCH :
Component Parts Location ....................................
28
BACK DOOR OPENER SWITCH :
Component Description ..........................................
28
INTELLIGENT KEY ................................................ ....29
INTELLIGENT KEY : System Diagram ....................29
INTELLIGENT KEY : System Description ...............29
INTELLIGENT KEY : Component Parts Location ....31
INTELLIGENT KEY : Component Description ........32
WARNING FUNCTION ......................................34
System Description ..................................................34
Component Parts Location ....................................38
KEY REMINDER FUNCTION ............................40
System Description ..................................................40
Component Parts Location ....................................41
HAZARD AND BUZZER REMINDER FUNC-
TION ..................................................................
43
System Diagram ......................................................43
System Description ..................................................43
Component Parts Location ....................................44
Component Description ..........................................46
HOMELINK UNIVERSAL TRANSCEIVER .......47
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual DLK-2
Component Description ..........................................47
DIAGNOSIS SYSTEM (BCM) ............................48
COMMON ITEM ..................................................... ...4

DLK-2
Component Description ..........................................47
DIAGNOSIS SYSTEM (BCM) ............................48
COMMON ITEM ..................................................... ...48
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) ................................................. ...
48
DOOR LOCK .......................................................... ...48
DOOR LOCK : CONSULT-III Function (BCM -
DOOR LOCK) .........................................................
48
MULTIREMOTE ENT ............................................. ...49
MULTIREMOTE ENT : CONSULT-III Function
(BCM - MULTIREMOTE ENT) ................................
49
INTELLIGENT KEY ................................................ ...51
INTELLIGENT KEY : CONSULT-III Function
(BCM - INTELLIGENT KEY) ...................................
51
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) ............................................................... ...
52
CONSULT-III Function (INTELLIGENT KEY) ...... ...52
COMPONENT DIAGNOSIS ........................54
U1000 CAN COMM CIRCUIT ......................... ...54
Description ........................................................... ...54
DTC Logic ...............................................................54
Diagnosis Procedure ..............................................54
U1010 CONTROL UNIT (CAN) .........................55
DTC Logic ............................................................ ...55
Diagnosis Procedure ..............................................55
Special Repair Requirement ...................................55
INSIDE KEY ANTENNA 1 (REAR OF CEN-
TER CONSOLE) ............................................. ...
56
Description ........................................................... ...56
Component Function Check .................................56
Diagnosis Procedure ..............................................56
INSIDE KEY ANTENNA 2 (LUGGAGE COM-
PARTMENT) ......................................................
58
Description ........................................................... ...58
Component Function Check .................................58
Diagnosis Procedure ..............................................58
INSIDE KEY ANTENNA 3 (FRONT OF CEN-
TER CONSOLE) ................................................
60
Description ........................................................... ...60
Component Function Check .................................60
Diagnosis Procedure ..............................................60
INSIDE KEY ANTENNA 4 (OVERHEAD CON-
SOLE AREA) .....................................................
62
Description ........................................................... ...62
Component Function Check .................................62
Diagnosis Procedure ..............................................62
POWER SUPPLY AND GROUND CIRCUIT .....64
INTELLIGENT KEY UNIT ....................................... ...64
INTELLIGENT KEY UNIT : Diagnosis Procedure ...64
BCM (BODY CONTROL MODULE) ..........................64
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
64
BACK DOOR .......................................................... ...65
BACK DOOR : Diagnosis Procedure ......................65
DOOR SWITCH .................................................67
Description ........................................................... ...67
Component Function Check ..................................67
Diagnosis Procedure ...............................................67
DOOR LOCK AND UNLOCK SWITCH .............70
DRIVER SIDE ......................................................... ...70
DRIVER SIDE : Description ....................................70
DRIVER SIDE : Component Function Check ........70
DRIVER SIDE : Diagnosis Procedure .....................70
PASSENGER SIDE ...................................................72
PASSENGER SIDE : Descripti on ...........................72
PASSENGER SIDE :
Component Function Check ............................... ...
72
PASSENGER SIDE : Diagnosis Procedure ............72
KEY CYLINDER SWITCH .................................75
Description ........................................................... ...75
Component Function Check ...................................75
Diagnosis Procedure ...............................................75
FRONT DOOR LOCK ACTUATOR LH (DOOR
UNLOCK SENSOR) ..........................................
77
Description ........................................................... ...77
Component Function Check ..................................77
Diagnosis Procedure ...............................................77
Component Inspection ............................................78
DOOR REQUEST SWITCH ...............................79
Description ..............................................................79
Component Function Check ..................................79
Diagnosis Procedure ...............................................79
Component Inspection ............................................80
DOOR LOCK ACTUATOR ................................82
DRIVER SIDE ......................................................... ...82
DRIVER SIDE : Description ....................................82
DRIVER SIDE : Component Function Check ........82
DRIVER SIDE : Diagnosis Procedure .....................82
PASSENGER SIDE ...................................................83
PASSENGER SIDE : Descripti on ...........................83
PASSENGER SIDE :
Component Function Check ............................... ...
83
PASSENGER SIDE : Diagnosis Procedure ............83
REAR LH ................................................................ ...84
REAR LH : Description ...........................................84
REAR LH : Component Function Check ............ ...84
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual DLK-3
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REAR LH : Diagnosis Procedure ........................
....
84
REAR RH ............................................................... ....85
REAR RH : Descrip

DLK-3
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REAR LH : Diagnosis Procedure ........................
....
84
REAR RH ............................................................... ....85
REAR RH : Description ...........................................85
REAR RH : Component Function Check ...............86
REAR RH : Diagnosis Procedure ............................86
BACK DOOR ......................................................... ....87
BACK DOOR : Description ......................................87
GLASS HATCH LOCK ACTUATOR ..................88
Diagnosis Procedure ...............................................88
PASSENGER SELECT UNLOCK RELAY .........89
Description .......................................................... ....89
Component Function Check ....................................89
Diagnosis Procedure ...............................................89
INTELLIGENT KEY WARNING BUZZER ..........91
Description .......................................................... ....91
Component Function Check ..................................91
Diagnosis Procedure ...............................................91
Component Inspection ............................................92
OUTSIDE KEY ANTENNA .................................93
Description .......................................................... ....93
Component Function Check ..................................93
Diagnosis Procedure ...............................................93
STEERING LOCK UNIT .....................................95
Diagnosis Procedure ........................................... ....95
A/T SHIFT SELECTOR (PARK POSITION
SWITCH) .............................................................
97
Diagnosis Procedure ........................................... ....97
REMOTE KEYLESS ENTRY RECEIVER ..........99
Description .......................................................... ....99
Component Function Check ..................................99
Diagnosis Procedure ...............................................99
INTELLIGENT KEY BATTERY AND FUNC-
TION .................................................................
102
Description .......................................................... ..102
Component Function Check ................................102
Diagnosis Procedure .............................................102
Component Inspection ..........................................102
Special Repair Requirement .................................103
HORN FUNCTION .......................................... ..104
Description .......................................................... ..104
Component Function Check ................................104
Diagnosis Procedure ............................................104
COMBINATION METER DISPLAY FUNC-
TION .................................................................
106
Description .......................................................... ..106
Component Function Check ................................106
Diagnosis Procedure .............................................106
WARNING CHIME FUNCTION ........................107
Description .......................................................... ..107
Component Function Check .............................. ..107
Diagnosis Procedure .............................................107
HAZARD FUNCTION ......................................108
Description .............................................................108
Component Function Check ................................108
Diagnosis Procedure .............................................108
KEY SWITCH (INTELLIGENT KEY UNIT IN-
PUT) ................................................................
109
Diagnosis Procedure .............................................109
KEY SWITCH (BCM INPUT) ...........................111
Diagnosis Procedure .............................................111
IGNITION KNOB SWITCH ..............................112
Ignition Knob Switch Check ...................................112
HEADLAMP FUNCTION .................................114
Diagnosis Procedure .............................................114
MAP LAMP AND IGNITION KEYHOLE ILLU-
MINATION FUNCTION ...................................
115
Diagnosis Procedure .............................................115
KEYFOB ID SET UP WITH CONSULT-III ......116
ID Code Entry Procedure ......................................116
KEYFOB ID SET UP WITHOUT CONSULT-III .117
ID Code Entry Procedure .................................... ..117
AUTOMATIC BACK DOOR SELF-DIAGNO-
SIS PROCEDURE ...........................................
119
Self-Diagnosis Procedure ......................................119
POWER LIFTGATE SWITCH FUNCTION ......121
Diagnosis Procedure ........................................... ..121
GLASS HATCH SWITCH ................................123
Diagnosis Procedure .............................................123
GLASS HATCH AJAR SWITCH .....................125
Diagnosis Procedure .............................................125
BACK DOOR CLOSE (CLOSE) SWITCH
SYSTEM ..........................................................
127
Diagnosis Procedure ........................................... ..127
BACK DOOR CLOSE (CANCEL) SWITCH
SYSTEM ..........................................................
128
Diagnosis Procedure ........................................... ..128
PINCH STRIP SYSTEM ..................................129
Diagnosis Procedure .............................................129
BACK DOOR WARNING CHIME SYSTEM ....130
Diagnosis Procedure .............................................130
HALF-LATCH SWITCH SYSTEM ...................131
Diagnosis Procedure .............................................131
BACK DOOR OPEN SWITCH SYSTEM ........132
Diagnosis Procedure .............................................132
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual DLK-4
BACK DOOR CLOSE SWITCH SYSTEM .......133
Diagnosis Procedure ........................................... ..133
BACK DOOR SWITCH ....................................134
Diagnosis Procedure ..

DLK-4
BACK DOOR CLOSE SWITCH SYSTEM .......133
Diagnosis Procedure ........................................... ..133
BACK DOOR SWITCH ....................................134
Diagnosis Procedure ........................................... ..134
CINCH LATCH MOTOR SYSTEM ...................135
Diagnosis Procedure ........................................... ..135
INTELLIGENT KEY UNIT POWER BACK
DOOR INPUT SIGNAL ....................................
136
Description ........................................................... ..136
Diagnosis Procedure .............................................136
INTELLIGENT KEY UNIT POWER BACK
DOOR OUTPUT SIGNAL ................................
137
Description ........................................................... ..137
Diagnosis Procedure .............................................137
HOMELINK UNIVERSAL TRANSCEIVER ......138
Wiring Diagram .................................................... ..138
Description .............................................................139
Component Function Check ................................140
Diagnosis Procedure .............................................140
ECU DIAGNOSIS ..................................... ..142
BCM (BODY CONTROL MODULE) ............... .142
Reference Value .................................................. ..142
Terminal Layout .....................................................144
Physical Values .....................................................144
Wiring Diagram — POWER DOOR LOCK SYS-
TEM — ..................................................................
150
Fail Safe ................................................................162
DTC Inspection Priority Chart .............................163
DTC Index ........................................................... ..163
INTELLIGENT KEY UNIT ................................165
Reference Value - Intelligent Key Unit ................. ..165
Reference Value - Steering Lock Solenoid ............168
Wiring Diagram — INTELLIGENT KEY SYSTEM
— ......................................................................... ..
169
Fail Safe ................................................................186
BACK DOOR CONTROL UNIT .......................187
Reference Value .................................................. ..187
Wiring Diagram—AUTOMATIC BACK DOOR
SYSTEM— ............................................................
189
Fail Safe .............................................................. ..199
SYMPTOM DIAGNOSIS ............................200
INTELLIGENT KEY SYSTEM SYMPTOMS ... .200
Symptom Table ................................................... ..200
DOOR LOCK FUNCTION SYMPTOMS ..........201
DOOR LOCK AND UNLOCK SWITCH ................. ..201
DOOR LOCK AND UNLOCK SWITCH : Symptom
Table ......................................................................
201
INTELLIGENT KEY ................................................ ..202
INTELLIGENT KEY : Symptom Table ..................202
BACK DOOR OPENER FUNCTION ................204
BACK DOOR OPENER SWITCH .......................... .204
BACK DOOR OPENER SWITCH : Symptom Ta-
ble ........................................................................ .
204
BACK DOOR SWITCH ........................................... .204
BACK DOOR SWITCH : Symptom Table .............205
INTELLIGENT KEY ................................................ .205
INTELLIGENT KEY : Symptom Table ..................205
WARNING FUNCTION SYMPTOMS ...............206
Symptom Table .................................................... .206
KEY REMINDER FUNCTION SYMPTOMS .....209
Symptom Table .................................................... .209
HAZARD FUNCTION ..................................... ..210
Symptom Table .................................................... .210
HORN FUNCTION ............................................211
Symptom Table .................................................... .211
HOMELINK UNIVERSAL TRANSCEIVER ......212
Symptom Table .................................................... .212
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
213
Work Flow ............................................................ .213
Inspection Procedure ............................................215
Diagnostic Worksheet ...........................................217
PRECAUTION ...........................................219
PRECAUTIONS .............................................. ..219
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
219
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
219
Precaution for work ...............................................220
PREPARATION .........................................221
PREPARATION .............................................. ..221
Special Service Tool ............................................ .221
Commercial Service Tool ......................................222
ON-VEHICLE REPAIR ..............................223
HOOD ............................................................. ..223
Fitting Adjustment ................................................ .223
Removal and Installation of Hood Assembly ........224
Removal and Installation of Hood Lock Control ....225
Hood Lock Control Inspection ...............................226
DOOR ............................................................. ..228
Fitting Adjustment ................................................ .228
Removal and Installation .......................................229
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual DLK-5
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FRONT DOOR LOCK ..................................... ..232
Component Structure .......................................... ..232
Removal and Installation ......

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INFINITI QX56 2008 Factory Service Manual DLK-6
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000001538903
OVERALL SEQUENCE
DETAILED FLOW
ALK

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INFINITI QX56 2008 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWDLK-7
< BASIC INSPECTION > [WITH INTELLIGENT KEY SYSTEM]
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1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer abo

DIAGNOSIS AND REPAIR WORKFLOWDLK-7
< BASIC INSPECTION > [WITH INTELLIGENT KEY SYSTEM]
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1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred).
>> GO TO 2.
2.CHECK DTC
1. Check DTC.
2. Perform the following procedure if DTC is displayed.
- Record DTC and freeze frame data (Print them out with CONSULT-III.)
- Erase DTC.
- Study the relationship between the cause detected by DTC and the symptom described by the customer.
3. Check related service bulletins for information.
Is any symptom described and any DTC detected?
Symptom is described, DTC is displayed>>GO TO 3.
Symptom is described, DTC is not displayed>>GO TO 4.
Symptom is not described, DTC is displayed>>GO TO 5.
3.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MONI TOR” mode and check real time diagnosis results.
Verify relation between the symptom and t he condition when the symptom is detected.
>> GO TO 5.
4.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MONI TOR” mode and check real time diagnosis results.
Verify relation between the symptom and t he condition when the symptom is detected.
>> GO TO 6.
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC Confirmation Procedure for the display ed DTC, and then check that DTC is detected again.
At this time, always connect CONSULT-III to the vehicle, and check diagnostic results in real time.
If two or more DTCs are detected, refer to DLK-163, "
DTCInspectionPriorityChart" and determine trouble
diagnosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC Confirmation Procedure is not included in Service Manual. This
simplified check procedure is an effective alternat ive though DTC cannot be detected during this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC Confirma-
tion Procedure.
Is DTC detected?
Yes >> GO TO 7.
No >> Refer to GI-38, "
Intermittent Incident".
6.DETECT MALFUNCTIONING SYST EM BY SYMPTOM DIAGNOSIS
Detect malfunctioning system according to SYMPTO M DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 7.
7.DETECT MALFUNCTIONING PA RT BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
Revision: March 2010 2008 QX56

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