2007 INFINITI QX56 turn signal bulb

LT-2
Wiring Diagram - F/FOG - ......................................51
Terminal and Reference Value for BCM .................52
Terminal and Reference Value for IPDM E/R .........52
How to Proceed with Trouble Diagnosis .................53
Preliminary Check ..................................................53
CONSULT-II Function for BCM ..............................53
CONSULT-II Function for IPDM E/R ......................53
Front Fog Lamps Do Not Illuminate (Both Sides) ...53
Front Fog Lamp Does Not Illuminate (One Side) ...54
Aiming Adjustment ..................................................55
Bulb Replacement ..................................................55
Removal and Installation ........................................56
TURN SIGNAL AND HAZARD WARNING
LAMPS ...............................................................
57
Component Parts and Harness Connector Loca-
tion ..........................................................................
57
System Description .................................................57
CAN Communication System Description ..............59
Schematic ...............................................................60
Wiring Diagram - TURN - ........................................61
Terminal and Reference Value for BCM .................63
How to Proceed with Trouble Diagnosis .................63
Preliminary Check ..................................................64
CONSULT-II Function (BCM) .................................64
Front Turn Signal Lamp Does Not Operate ............64
Door Mirror Turn Signal Lamp Does Not Operate ...65
Rear Turn Signal Lamp Does Not Operate ............66
Hazard Warning Lamp Does Not Operate But
Turn Signal Lamp Operatess ..................................
67
Turn Signal Indicator Lamp Does Not Operate ......68
Bulb Replacement ..................................................69
Removal and Installation ........................................69
LIGHTING AND TURN SIGNAL SWITCH .........70
Removal and Installation ........................................70
HAZARD SWITCH .............................................71
Removal and Installation ........................................71
COMBINATION SWITCH ..................................72
Wiring Diagram - COMBSW - .................................72
Combination Switch Reading Function ...................72
CONSULT-II Function (BCM) .................................73
Combination Switch Inspection ..............................73
Removal and Installation ........................................76
Switch Circuit Inspection ........................................76
STOP LAMP ......................................................77
System Description .................................................77
Wiring Diagram - STOP/L - .....................................78
Bulb Replacement ..................................................78
Removal and Installation ........................................79
BACK-UP LAMP ................................................80
Wiring Diagram - BACK/L - .....................................80
Bulb Replacement ..................................................80
Removal and Installation ........................................81
PARKING, LICENSE PLATE AND TAIL
LAMPS ...............................................................
82
Component Parts and Harness Connector Loca-
tion ..........................................................................
82
System Description .................................................82
CAN Communication System Description ..............83
Schematic ...............................................................84
Wiring Diagram - TAIL/L - .......................................85
Terminal and Reference Value for BCM .................87
Terminal and Reference Value for IPDM E/R .........87
How to Proceed with Trouble Diagnosis .................88
Preliminary Check ...................................................88
CONSULT-II Function for BCM ...............................88
CONSULT-II Function for IPDM E/R .......................88
Parking, License Plate and/or Tail Lamps Do Not
Illuminate .................................................................
88
Parking, License Plate and Tail Lamps Do Not
Turn OFF (After Approx. 10 Minutes) .....................
91
Bulb Replacement ...................................................91
Removal and Installation .........................................92
REAR COMBINATION LAMP ...........................93
Bulb Replacement ...................................................93
Removal and Installation .........................................93
TRAILER TOW ..................................................94
Component Parts and Harness Connector Loca-
tion ..........................................................................
94
System Description .................................................94
Schematic ...............................................................96
Wiring Diagram - T/TOW - ......................................97
INTERIOR ROOM LAMP ..................................101
Component Parts and Harness Connector Loca-
tion ........................................................................
101
System Description ...............................................101
Schematic .............................................................105
Wiring Diagram - INT/L - .......................................107
Terminal and Reference Value for BCM ...............113
How to Proceed with Trouble Diagnosis ...............113
Preliminary Check .................................................114
CONSULT-II Function (BCM) ...............................114
Room/Map Lamp Control Does Not Operate ........115
Personal Lamp Control Does Not Operate (Room/
Map Lamps Operate) ............................................
116
All Step/Foot/Puddle Lamps Do Not Operate .......117
All Interior Room Lamps Do Not Operate .............118
Ignition Keyhole Illumination Control Does Not
Operate .................................................................
118
ILLUMINATION ................................................120
Component Parts and Harness Connector Loca-
tion ........................................................................
120
System Description ...............................................120
CAN Communication System Description ............122
Schematic .............................................................123
Wiring Diagram - ILL - ...........................................126
Removal and Installation of Illumination Control
Switch ...................................................................
136

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-65
< SERVICE INFORMATION >
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1. Select "FLASHER" during active test. Refer to LT-64, "CON-
SULT-II Function (BCM)" .
2. Make sure "FLASHER RH" and "FLASHER LH" operate.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Replace BCM. Refer to BCS-24, "BCM".
NG >> GO TO 3.
3.CHECK TURN SIGNAL LAMPS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front turn/fog lamp LH and RH
connectors.
3. Check continuity between BCM harness connector M20 terminal
60 and front turn/fog lamp LH harness connector E101 terminal
2.
4. Check continuity between BCM harness connector M20 terminal
61 and front turn/fog lamp RH harness connector E102 terminal
2.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK GROUND
1. Check continuity between front turn/fog lamp LH harness con-
nector E101 terminal 3 and ground.
2. Check continuity between front turn/fog lamp RH harness con-
nector E102 terminal 3 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5.CHECK BULB
Check bulb standard of each turn signal lamp is correct. Refer to LT-138, "
Exterior Lamp".
OK or NG
OK >> Replace BCM if turn signal lamps do not work after setting the connector again. Refer to BCS-24,
"BCM".
NG >> Replace turn signal lamp bulb. Refer to LT-69, "
Bulb Replacement" .
Door Mirror Turn Signal Lamp Does Not OperateINFOID:0000000003533413
1.CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-II
SKIA6190E
60 - 2 : Continuity should exist.
61 - 2 : Continuity should exist.
WKIA1890E
3 - Ground : Continuity should exist.
3 - Ground : Continuity should exist.
WKIA1891E

LT-66
< SERVICE INFORMATION >
TURN SIGNAL AND HAZARD WARNING LAMPS
Select "BCM" on CONSULT-II. With "FLASHER" data monitor, make
sure "TURN SIGNAL R" and "TURN SIGNAL L" turns ON-OFF
linked with operation of lighting switch.
Without CONSULT-II
Refer to LT-73, "
Combination Switch Inspection".
OK or NG
OK >> GO TO 2.
NG >> Check lighting switch. Refer to LT-73, "
Combination Switch Inspection".
2.ACTIVE TEST
With CONSULT-II
1. Select "FLASHER" during active test. Refer to LT-64, "
CON-
SULT-II Function (BCM)".
2. Make sure "FLASHER RH" and "FLASHER LH" operate.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Replace BCM. Refer to BCS-24, "BCM".
NG >> GO TO 3.
3.CHECK TURN SIGNAL LAMPS CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and door mirror LH/RH connector.
3. Check continuity between BCM harness connector M20 (A) ter-
minal 60 (LH), 61 (RH) and door mirror harness connector (LH
D4), (RH D107) (B) terminal 15.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK GROUND
1. Check continuity between door mirror harness connector (LH
D4), (RH D107) terminal 11 and ground.
OK or NG
OK >> Replace door mirror turn signal.
NG >> Repair harness or connector.
Rear Turn Signal Lamp Does Not OperateINFOID:0000000003533414
1.CHECK BULB
Check bulb standard of each turn signal lamp is correct. Refer to LT-138, "
Exterior Lamp" . When lighting switch is in
TURN RH position: TURN SIGNAL R ON
When lighting switch is in
TURN LH position: TURN SIGNAL L ON
SKIA4499E
SKIA6190E
60, 61 - 15 : Continuity should exist.
WKIA4524E
11 - Ground : Continuity should exist.
WKIA4525E

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-67
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT-69, "
Bulb Replacement" .
2.CHECK TURN SIGNAL LAMPS CIRCUIT
1. Disconnect BCM connector and rear combination lamp connec-
tor.
2. Check continuity between BCM harness connector M20 (A) ter-
minal 61 and rear combination lamp RH harness connector
B105 (B) terminal 4.
3. Check continuity between BCM harness connector M20 (A) ter-
minal 60 and rear combination lamp LH harness connector B35
(B) terminal 4.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between rear combination lamp harness connector
B35 LH and B105 RH terminal 6 and ground.
OK or NG
OK >> Check rear combination lamp connector for proper con-
nection. Repair as necessary.
NG >> Repair harness or connector.
Hazard Warning Lamp Does Not Operate But Turn Signal Lamp Operatess
INFOID:0000000003533415
1.CHECK BULB
Make sure bulb standard of each turn signal lamp is correct. Refer to LT-138, "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT-69, "
Bulb Replacement" for front turn signal bulb.
Refer to LT-69, "
Bulb Replacement" for rear turn signal bulb.
2.CHECK HAZARD SWITCH INPUT SIGNAL
With CONSULT-II
Select "BCM" on CONSULT-II. With "FLASHER" data monitor, make
sure "HAZARD SW" turns ON-OFF linked with operation of hazard
switch.61 - 4 : Continuity should exist.
60 - 4 : Continuity should exist.
WKIA4694E
6 - Ground : Continuity should exist.
WKIA4695E
When hazard switch is in
ON position : HAZARD SW ON
SKIA4500E

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-69
< SERVICE INFORMATION >
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Check CAN communication. Refer to LAN-4, "CAN Communication System".
OK or NG
OK >> Replace combination meter. Refer to DI-21, "Removal and Installation of Combination Meter" .
NG >> Repair as necessary.
Bulb ReplacementINFOID:0000000003533417
TURN SIGNAL LAMP (FRONT)
Removal
1. Remove front fog lamp. Refer to LT-56, "Removal and Installation".
2. Twist turn signal socket and remove from front fog lamp.
3. Remove turn signal bulb from socket.
Installation
Installation is in the reverse order of removal.
TURN SIGNAL LAMP (REAR)
Refer to LT-93, "Bulb Replacement".
Removal and InstallationINFOID:0000000003533418
FRONT TURN SIGNAL LAMP
Refer to LT-22, "Removal and Installation".
REAR TURN SIGNAL LAMP
Refer to LT-93, "Removal and Installation".

REAR COMBINATION LAMP
LT-93
< SERVICE INFORMATION >
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REAR COMBINATION LAMP
Bulb ReplacementINFOID:0000000003533449
SIDE MARKER LAMP (REAR)
Side marker lamps (rear) are LED's and are not serviceable separately. Replace rear combination lamp. Refer
to LT-93, "
Removal and Installation".
TAIL LAMP
Tail lamps are LED's and are not serviceable separately. Replace rear combination lamp. Refer to LT-93,
"Removal and Installation" .
TURN SIGNAL
Removal
1. Remove rear combination lamp bolts.
2. Pull rear combination lamp to remove from the vehicle.
3. Turn bulb socket counterclockwise and remove turn signal
socket.
4. Remove turn signal lamp bulb.
Installation
Installation is in the reverse order of removal.
STOP LAMP
Stop lamps are LED's and are not serviceable separately. Replace rear combination lamp. Refer to LT-93,
"Removal and Installation".
Removal and InstallationINFOID:0000000003533450
REAR COMBINATION LAMP
Removal
1. Remove rear combination lamp mounting bolts.
2. Pull rear combination lamp to remove from the vehicle.
3. Disconnect rear combination lamp connectors.
Installation
Installation is in the reverse order of removal.
WKIA1393E
WKIA1393E

LT-138
< SERVICE INFORMATION >
BULB SPECIFICATIONS
BULB SPECIFICATIONS
HeadlampINFOID:0000000003533474
*: Always check with the Parts Department for the latest parts information.
Exterior LampINFOID:0000000003533475
*: Always check with the Parts Department for the latest parts information.
Interior Lamp/IlluminationINFOID:0000000003533476
*: Always check with the Parts Department for the latest parts information.Item Wattage (W)*
Low35 (D2R)
High60 (HB3)
Item Wattage (W)*
Front combination lampParking lamp (inner) 7
Parking lamp (outer) 7
Side marker lamp (front) 7
Rear combination lampStop/Tail lamp *
Side marker lamp (rear) *
Turn signal lamp 27
Back-up lamp*
Turn/fog lampFog 55 (H3)
Turn 21
License plate lamp5
High-mounted stop lamp*
Item Wattage (W)*
Glove box lamp3.4
Room/Map lamp8
Console box illumination lamp*
A/T device lamp2
Foot lamp3.4
Ste p lam p3.8
Cargo lamp7
Vanity lamp1.32
Personal lamp5
Puddle lamp8
Ignition keyhole illumination lamp0.74