wiring diagram INFINITI QX56 2009 Factory User Guide

CCS-2
DTC 98 GEAR POSITION .................................40
DTC 98 GEAR POSITION ................................... ...40
DTC 102 LASER STAIN ....................................41
DTC 102 LASER STAIN ...................................... ...41
DTC 103 LASER SENSOR FAIL .......................42
DTC 103 LASER SENSOR FAIL ......................... ...42
DTC 104 LASER AIMING INCMP .....................43
DTC 104 LASER AIMING INCMP ....................... ...43
DTC 107 LASER COMM FAIL ..........................44
DTC 107 LASER COMM FAIL ............................ ...44
DTC109 LASER HIGH TEMP ............................45
DTC 109 LASER HIGH TEMP ............................ ...45
ECU DIAGNOSIS ..................................... ...46
ICC UNIT ............................................................46
Terminal and Reference Va lue for ICC Unit ...........46
Wiring Diagram .................................................... ...47
Fail Safe .................................................................54
Diagnostic Trouble Code (DTC) Chart ....................55
SYMPTOM DIAGNOSIS .............................57
INTELLIGENT CRUISE CONTROL SYSTEM
SYMPTOMS .................................................... ...
57
Symptom Chart .................................................... ...57
MAIN SWITCH DOES NOT TURN ON, MAIN
SWITCH DOES NOT TURN OFF ......................
58
Diagnosis Procedure ........................................... ...58
ICC SYSTEM CANNOT BE SET (MAIN
SWITCH TURNS ON/OFF) ................................
59
Diagnosis Procedure ........................................... ...59
ICC STEERING SWITCH (OTHER THAN
MAIN SWITCH) DOES NOT FUNCTION ..........
60
Diagnosis Procedure ........................................... ...60
ICC SYSTEM DOES NOT CANCEL WHEN A/
T SELECTOR LEVER SETS ON "N" ................
61
Diagnosis Procedure ............................................ ...61
CHIME DOES NOT SOUND ..............................62
Diagnosis Procedure ............................................ ...62
DRIVING FORCE IS HUNTING .........................63
Diagnosis Procedure ............................................ ...63
ICC SYSTEM FREQUENTLY CANNOT DE-
TECT THE VEHICLE AHEAD/ DETECTION
ZONE IS SHORT ...............................................
64
Diagnosis Procedure ...............................................64
THE SYSTEM DOES NOT DETECT THE VE-
HICLE AHEAD AT ALL .....................................
65
Diagnosis Procedure ............................................ ...65
NORMAL OPERATING CONDITION ................66
Description ........................................................... ...66
PRECAUTION ............................................68
PRECAUTIONS .............................................. ...68
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
68
ICC System Service ................................................68
PREPARATION ..........................................69
PREPARATION .............................................. ...69
Special Service Tool ............................................ ...69
ON-VEHICLE REPAIR ...............................70
ICC C/U ..............................................................70
ICC Unit ............................................................... ...70
ICC SENSOR INTEGRATED UNIT ...................71
ICC Sensor .......................................................... ...71
ICC STEERING SWITCH ..................................72
Removal and Installation .........................................72
Revision: December 20092009 QX56

CCS
ICC UNITCCS-47
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B
N P A
Wiring DiagramINFOID:0000000003776957
ABOWA0005GB
Revision: December 20092009 QX56

CHG
CHG-1
ELECTRICAL & POWER CONTROL
C
DE
F
G H
I
J
K L
B
SECTION CHG
A
O P
N
CONTENTS
CHARGING 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
Precaution for Power Generation Variable Voltage
Control System ..........................................................
3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................4
BASIC INSPECTION ....................................5
DIAGNOSIS AND REPAIR WORKFLOW ..... .....5
Work Flow ........................................................... ......5
FUNCTION DIAGNOSIS ...............................6
CHARGING SYSTEM ..................................... .....6
System Diagram .................................................. ......6
System Description ...................................................6
Component Description ............................................6
POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM .................................
7
System Diagram .................................................. ......7
System Description ...................................................7
Component Description .............................................7
COMPONENT DIAGNOSIS ..........................8
CHARGING SYSTEM PRELIMINARY IN-
SPECTION ....... ..................................................
8
Inspection Procedure ........................................... .....8
POWER GENERATION VOLTAGE VARI-
ABLE CONTROL SYSTEM OPERATION IN-
SPECTION .........................................................
9
Inspection Procedure ........................................... .....9
B TERMINAL CIRCUIT .....................................11
Description ...............................................................11
Diagnosis Procedure ...............................................11
L TERMINAL CIRCUIT .....................................12
Description ...............................................................12
Diagnosis Procedure ...............................................12
S TERMINAL CIRCUIT .....................................13
Description ...............................................................13
Diagnosis Procedure ...............................................13
CHARGING SYSTEM .......................................14
Wiring Diagram ........................................................14
SYMPTOM DIAGNOSIS ..............................19
CHARGING SYSTEM .......................................19
Symptom Table ................................................... ....19
ON-VEHICLE REPAIR .................................20
GENERATOR ....................................................20
Removal and Installation ..................................... ....20
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
21
GENERATOR ....................................................21
Generator ............................................................ ....21
Revision: December 20092009 QX56

CHG-14
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
CHARGING SYSTEM
Wiring DiagramINFOID:0000000003776556
AWMWA0369G
Revision: December 20092009 QX56

DEF-1
DRIVER CONTROLS
C
DE
F
G H
I
J
K
M
SECTION DEF
A
B
DEF
N
O P
CONTENTS
DEFOGGER
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Repair Work Flow ................................................ ......3
FUNCTION DIAGNOSIS ...............................4
REAR WINDOW DEFOGGER SYSTEM ........ .....4
System Diagram .................................................. ......4
System Description ...................................................4
Component Parts Location ........................................5
Component Description .............................................5
DIAGNOSIS SYSTEM (BCM) .............................6
COMMON ITEM ..................................................... ......6
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .......................................................
6
REAR WINDOW DEFOGGER ............................... ......6
REAR WINDOW DEFOGGER : CONSULT-III
Function (BCM - REAR DEFOGGER) ......................
7
CAN COMMUNICATION .....................................8
System Description ............................................. ......8
COMPONENT DIAGNOSIS ..........................9
REAR WINDOW DEFOGGER SWITCH ........ .....9
Description .......................................................... ......9
Component Function Check ......................................9
Diagnosis Procedure .................................................9
REAR WINDOW DEFOGGER RELAY ..............10
Description .......................................................... ....10
Component Function Check ....................................10
Diagnosis Procedure ...............................................10
REAR WINDOW DEFOGGER POWER SUP-
PLY AND GROUND CIRCUIT ............................
11
Description .......................................................... ....11
Component Function Check ....................................11
Diagnosis Procedure ........................................... ....11
Component Inspection .............................................12
DOOR MIRROR DEFOGGER LH .....................13
Description ...............................................................13
Component Function Check ....................................13
Diagnosis Procedure ...............................................13
Component Inspection .............................................14
DOOR MIRROR DEFOGGER RH .....................15
Description ...............................................................15
Component Function Check ....................................15
Diagnosis Procedure ...............................................15
Component Inspection .............................................16
ECU DIAGNOSIS .........................................17
BCM (BODY CONTROL MODULE) .................17
Reference Value .................................................. ....17
Terminal Layout .......................................................19
Physical Values ................................................... ....19
Wiring Diagram ........................................................25
Fail Safe ..................................................................32
DTC Inspection Priority Chart ...............................33
DTC Index ...............................................................33
SYMPTOM DIAGNOSIS ..............................35
REAR WINDOW DEFOGGER AND DOOR
MIRROR DEFOGGER DO NOT OPERATE. ....
35
Diagnosis Procedure ........................................... ....35
REAR WINDOW DEFOGGER DOES NOT
OPERATE BUT BOTH OF DOOR MIRROR
DEFOGGER OPERATE. ...................................
36
Diagnosis Procedure ...............................................36
BOTH DOORS MIRROR DEFOGGER DON’T
OPERATE BUT REAR WINDOW DEFOG-
GER OPERATES ..............................................
37
Diagnosis Procedure ...............................................37
Revision: December 20092009 QX56

BCM (BODY CONTROL MODULE)DEF-25
< ECU DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
DEF
N
O P
Wiring DiagramINFOID:0000000003776355
ABLWA0009GB
Revision: December 20092009 QX56

DLK-4
BACK DOOR OPEN SWITCH SYSTEM .........136
Diagnosis Procedure ........................................... ..136
BACK DOOR CLOSE SWITCH SYSTEM .......137
Diagnosis Procedure ........................................... ..137
BACK DOOR SWITCH ....................................138
Diagnosis Procedure ........................................... ..138
CINCH LATCH MOTOR SYSTEM ...................139
Diagnosis Procedure ........................................... ..139
INTELLIGENT KEY UNIT POWER BACK
DOOR INPUT SIGNAL ....................................
140
Description ........................................................... ..140
Diagnosis Procedure .............................................140
INTELLIGENT KEY UNIT POWER BACK
DOOR OUTPUT SIGNAL ................................
141
Description ........................................................... ..141
Diagnosis Procedure .............................................141
HOMELINK UNIVERSAL TRANSCEIVER ......142
Wiring Diagram .................................................... ..142
Description .............................................................143
Component Function Check ................................144
Diagnosis Procedure .............................................144
ECU DIAGNOSIS ..................................... ..146
BCM (BODY CONTROL MODULE) ............... .146
Reference Value .................................................. ..146
Terminal Layout .....................................................148
Physical Values .....................................................148
Wiring Diagram — POWER DOOR LOCK SYS-
TEM — ..................................................................
154
Fail Safe ................................................................168
DTC Inspection Priority Chart .............................169
DTC Index ........................................................... ..169
INTELLIGENT KEY UNIT ................................171
Reference Value - Intelligent Key Unit ................. ..171
Reference Value - Steering Lock Solenoid ............174
Wiring Diagram — INTELLIGENT KEY SYSTEM
— ......................................................................... ..
175
Fail Safe ................................................................192
BACK DOOR CONTROL UNIT .......................193
Reference Value .................................................. ..193
Wiring Diagram—AUTOMATIC BACK DOOR
SYSTEM— ............................................................
195
Fail Safe .............................................................. ..205
SYMPTOM DIAGNOSIS ............................206
INTELLIGENT KEY SYSTEM SYMPTOMS ... .206
Symptom Table ................................................... ..206
DOOR LOCK FUNCTION SYMPTOMS ..........207
DOOR LOCK AND UNLOCK SWITCH ................. ..207
DOOR LOCK AND UNLOCK SWITCH : Symptom
Table .....................................................................
207
INTELLIGENT KEY ................................................ .208
INTELLIGENT KEY : Symptom Table ..................208
BACK DOOR OPENER FUNCTION ................210
BACK DOOR OPENER SWITCH .......................... .210
BACK DOOR OPENER SWITCH : Symptom Ta-
ble ........................................................................ .
210
BACK DOOR HANDLE .......................................... .210
BACK DOOR HANDLE : Symptom Table .............211
INTELLIGENT KEY ................................................ .211
INTELLIGENT KEY : Symptom Table ..................211
WARNING FUNCTION SYMPTOMS ...............212
Symptom Table .................................................... .212
KEY REMINDER FUNCTION SYMPTOMS .....215
Symptom Table .................................................... .215
HAZARD FUNCTION ..................................... ..216
Symptom Table .................................................... .216
HORN FUNCTION ............................................217
Symptom Table .................................................... .217
HOMELINK UNIVERSAL TRANSCEIVER ......218
Symptom Table .................................................... .218
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
219
Work Flow ............................................................ .219
Inspection Procedure ............................................221
Diagnostic Worksheet ...........................................223
PRECAUTION ...........................................225
PRECAUTIONS .............................................. ..225
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
225
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
225
Precaution for work ...............................................226
PREPARATION .........................................227
PREPARATION .............................................. ..227
Special Service Tool ............................................ .227
Commercial Service Tool ......................................228
ON-VEHICLE REPAIR ..............................229
HOOD ............................................................. ..229
Fitting Adjustment ................................................ .229
Removal and Installation of Hood Assembly ........230
Removal and Installation of Hood Lock Control ....231
Hood Lock Control Inspection ...............................232
Hood Stay Disposal ............................................. .232
Revision: December 20092009 QX56

DLK-108
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HORN FUNCTION
HORN FUNCTION
DescriptionINFOID:0000000003775782
Perform answer-back for each operation with horn.
Component Function CheckINFOID:0000000003775783
1.CHECK FUNCTION
1. Select "HORN" in “ACTIVE TEST” mode with CONSULT-III.
2. Check the horn (high/low) operation.
Is the operation normal?
YES >> Inspection End.
NO >> Go to DLK-108, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000003775784
1.CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES >> GO TO 2
NO >> Go to HRN-4, "
Wiring Diagram".
2.CHECK HORN RELAY POWER SUPPLY
1. Turn ignition switch ON.
2. Perform “ACTIVE TEST”, "HORN" with CONSULT-Ill.
3. Using an oscilloscope or analog voltmeter, check voltage between horn relay harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 3
3.CHECK HORN RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
Test item Description
HORN ON Horn relay ON (for 20 ms)
ALKIA0658ZZ
Horn relay
Ground Test item Voltage (V)
(Approx.)
Connector Terminal
H-1 1 Ground HORN ON
Battery voltage → 0 → Battery voltage
Other than above Battery voltage
Revision: December 20092009 QX56

DLK-112
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD FUNCTION
HAZARD FUNCTION
DescriptionINFOID:0000000003775791
Perform answer-back for each operation with number of blinks.
Component Function CheckINFOID:0000000003775792
1.CHECK FUNCTION
Check hazard warning lamp "FLASHER" in ACTIVE TEST.
Is the inspection result normal?
YES >> Hazard warning lamp circuit is OK.
NO >> Refer to DLK-112, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003775793
1.CHECK HAZARD SWITCH CIRCUIT
Operate the hazard lights by turni ng ON the hazard warning switch.
Do the lights operate normally?
YES >> Replace the BCM. Refer to BCS fo r replacement and configuration procedure.
NO >> Repair or replace hazard warning switch circuit. Refer to EXL-78, "
Wiring Diagram".
Revision: December 20092009 QX56

DLK-142
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HOMELINK UNIVERSAL TRANSCEIVER
HOMELINK UNIVERSAL TRANSCEIVER
Wiring DiagramINFOID:0000000003775817
ABKWA0018GB
Revision: December 20092009 QX56