2007 INFINITI QX56 ignition

GW-74
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
Work Flow
INFOID:0000000003533073
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-68, "
System Description".
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-74,
"Trouble Diagnosis Symptom Chart".
4. Does rear window defogger and door mirror defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5. Inspection end.
CONSULT-II Function (BCM)INFOID:0000000003533074
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure".
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
Trouble Diagnosis Symptom ChartINFOID:0000000003533075
Make sure other systems using the signal of the following systems operate normally.
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Monitor item “Operation” Content
REAR DEF SW “ON/OFF”Displays “Press (ON)/others (OFF)” status determined with the rear window defogger
switch.
IGN ON SW “ON/OFF” Displays “IGN (ON)/OFF” status determined with the ignition switch signal.
Test item Content
REAR WINDOW DEFOGGER Gives a drive signal to the rear window defogger to activate it.
Symptom Diagnoses / Service procedure Refer to page
Rear window defogger and door mirror defoggers do not
operate.1. BCM power supply and ground circuit checkBCS-15
2. IPDM E/R auto active test checkPG-20
3. Rear window defogger switch circuit checkGW-75
4. Rear window defogger circuit checkGW-76
5. Replace IPDM E/ RPG-28

REAR WINDOW DEFOGGER
GW-75
< SERVICE INFORMATION >
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BCM Power Supply and Ground Circuit InspectionINFOID:0000000003533076
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Rear Window Defogger Switch Circuit InspectionINFOID:0000000003533077
1.CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II. Refer to GW-74, "
CONSULT-II Function (BCM)".
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
OK or NG
OK >> Rear window defogger switch check is OK.
NG >> GO TO 2.
2.CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT HARNESS CONTINUITY
Rear window defogger does not operate but both of door
mirror defoggers operate.1. Rear window defogger circuit checkGW-762. Filament checkGW-80
3. Replace IPDM E/RPG-28
Both door mirror defoggers do not operate but rear window
defogger operates.1. Door mirror defogger power supply circuit checkGW-77
2. Replace IPDM E/RPG-28
Door mirror defogger LH does not operate. 1. Door mirror LH (door mirror defogger) circuit checkGW-78
Door mirror defogger RH does not operate. 1. Door mirror RH (door mirror defogger) circuit checkGW-79
Rear window defogger switch does not light, and rear win-
dow defogger is not shown on the display, but the rear win-
dow defogger operates. 1. Rear window defogger signal checkGW-80
Symptom Diagnoses / Service procedure Refer to page
When rear window defogger switch is turned to ON
REAR DEF SW : ON
When ignition switch is turned to ON
IGN ON SW : ON
PIIA2373E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M18 9 GroundRear window defogger
switch is pressed.0
Rear window defogger
switch is OFF.5
WIIA0523E

GW-76
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
1. Turn ignition switch OFF.
2. Disconnect BCM and front air control.
3. Check continuity between BCM connector M18 terminal 9 and
front air control connector M49 terminal 11.
4. Check continuity between BCM connector M18 terminal 9 and
ground
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M18 terminal 9 and
ground.
OK or NG
OK >> Replace front air control. Refer to ATC-123, "Removal
and Installation" .
NG >> Replace BCM. Refer to BCS-24, "
BCM" .
Rear Window Defogger Circuit InspectionINFOID:0000000003533078
1.CHECK FUSES
Check if any of the following fuses in IPDM E/R are blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK REAR WINDOW DEFOGGER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear window defogger.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger connector D406
terminal + and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.9 - 11 : Continuity should exist.
9 - Ground : Continuity should not exist.
LIIA2035E
9 - Ground : Approx. 5
WIIA0523E
COMPONENT PARTS AMPERE FUSE NO.
IPDM E/R 15A 46
IPDM E/R 15A 47
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D406 + GroundRear window defogger
switch ON. Battery voltage
Rear window defogger
switch OFF.0
LIIA0655E

REAR WINDOW DEFOGGER
GW-77
< SERVICE INFORMATION >
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3.CHECK REAR WINDOW DEFOGGER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear window defogger connector
D604 terminal - and ground.
OK or NG
OK >> Check filament. Refer to GW-80, "Filament Check".
• If filament is OK.
Check the condition of the harness and the connector.
• If filament is NG.
Repair filament.
NG >> Repair or replace harness.
4.CHECK REAR WINDOW DEFOGGER RELAY OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector E124 terminal 60
and ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and Installation of IPDM E/R".
NG >> Repair or replace harness.
Door Mirror Defogger Power Supply Circuit InspectionINFOID:0000000003533079
1.CHECK FUSE
Check if any of the following fuses in fuse block (J/B) are blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT 2
Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace IPDM E/R. Refer to PG-28, "
Removal and Installation of IPDM E/R".
3.CHECK DOOR MIRROR DEFOGGER CIRCUIT- - Ground : Continuity should exist.
LIIA0409E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
E124 60 GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA2190E
COMPONENT PARTS AMPERE FUSE NO.
IPDM E/R 15A 43
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
E120 23 GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA0977E

GW-78
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror LH or RH.
3. Check continuity between IPDM E/R connector E120 terminal
23 and door mirror connector D4 (LH) or D107 (RH) terminal 10.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
Check continuity between each door mirror connector D4 (LH) or
D107 (RH) terminal 11 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
5.CHECK DOOR MIRROR DEFOGGER
Check continuity between door mirror LH or RH terminals 10 and 11.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace malfunctioning door mirror LH or RH. Refer to
GW-84, "
Door Mirror Assembly".
Door Mirror LH (Door Mirror Defogger) Circuit InspectionINFOID:0000000003533080
1.CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror LH.
3. Turn ignition switch ON.
4. Check voltage between door mirror LH connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT23 - 10 : Continuity should exist.
WIIA0529E
11 - Ground : Continuity should exist.
LIIA1454E
10 - 11 : Continuity should exist.
LIIA2725E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D4 10 GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA1456E

REAR WINDOW DEFOGGER
GW-79
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Check continuity between door mirror LH connector D4 terminal
11 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR MIRROR DEFOGGER
Check continuity between door mirror LH terminals 10 and 11.
OK or NG
OK >> Repair or replace harness.
NG >> Replace door mirror LH. Refer to GW-84, "
Door Mirror
Assembly".
Door Mirror RH (Door Mirror Defogger) Circuit InspectionINFOID:0000000003533081
1.CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror RH.
3. Turn ignition switch ON.
4. Check voltage between door mirror RH connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between door mirror RH connector D107 termi-
nal 11 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR MIRROR DEFOGGER 11 - Ground : Continuity should exist.
LIIA1458E
10 - 11 : Continuity should exist.
LIIA2725E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D107 10 GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA1456E
11 - Ground : Continuity should exist.
LIIA1458E

IDX-4
ALPHABETICAL INDEX
Duct and grilles .............................................. ATC-170
DVD - Wiring Diagram ....................................... AV-75
DVD Entertainment System ............................... AV-72
DVD Player ........................................................ AV-73
E
ECM input/output signal ..................... EC-109
, EC-133
ECM power supply ............................. EC-150, EC-475
ECM relay ........................................................ EC-150
ECM/PW - Wiring diagram ............................... EC-476
ECTS - Wiring diagram .................................... EC-220
Electric sunroof .................................................. RF-10
Electric throttle control actuator ......... EC-595, EC-606
Electrical load signal circuit .............................. EC-657
Electrical units location ...................................... PG-65
Electronic ignition (EI) system ........................... EC-27
Engine control circuit diagram ......................... EC-107
Engine control component parts location ........... EC-98
Engine control module (ECM) .......................... EC-479
Engine control system diagram ......................... EC-24
Engine coolant .................................................. CO-10
Engine coolant temperature sensor (ECTS) ... EC-218,
EC-231
Engine fail-safe system ...................................... EC-93
Engine oil ............................................................. LU-8
Engine oil filter replacement ............................. MA-17
Engine oil precautions .......................................... GI-7
Engine oil replacement ..................................... MA-17
Engine removal ................................................. EM-74
Engine room cover ............................................ EM-12
Engine serial number .......................................... GI-50
ETC1 - Wiring diagram .................................... EC-596
ETC2 - Wiring diagram .................................... EC-591
ETC3 - Wiring diagram .................................... EC-602
EVAP canister .................................................... EC-36
EVAP canister purge volume control solenoid valve ....
EC-395
, EC-403
EVAP canister vent control valve ....... EC-410, EC-417
EVAP control system (small leak) diagnosis .. EC-387,
EC-441
, EC-449
EVAP control system pressure sensor .... EC-424, EC-
427, EC-433
EVAP control system purge flow monitoring diagnosis
EC-382
EVAP vapor lines inspection ............................. MA-20
Evaporative emission (EVAP) system ............... EC-33
Evaporator ..................................................... ATC-186
Exhaust manifold .............................................. EM-21
Exhaust system ................................................... EX-3
Exhaust system inspection .................................. EX-3
Expansion valve ............................................. ATC-188
F
F/FOG - Wiring diagram ..................................... LT-56
F/PUMP - Wiring diagram ................................ EC-666
Final drive pre-inspection ................................. FFD-15
Final drive removal and installation .. FFD-12, RFD-13
Flow charts .......................................................... GI-27
Fluid temperature sensor (A/T) ........................ AT-123
Fluids ................................................................ MA-11
Fluorescent leak detector .............................. ATC-189
Fog lamp, front ................................................... LT-54
Fog lamp, front, removal and installation ........... LT-62
Foot lamp ......................................................... LT-111
Freeze frame data ............................... EC-55, EC-121
Front brake solenoid valve ................. AT-139, AT-141
Front bumper ...................................................... EI-13
Front case (Transfer) .......................... TF-149, TF-176
Front combination lamp removal and installation LT-25
Front door ............................. BL-117, BL-121, GW-62
Front Door Trim ................................................... EI-32
Front drive shaft (Transfer) ................. TF-149, TF-176
Front fog lamp .................................................... LT-54
Front fog lamp removal and installation ............. LT-62
Front passenger air bag .................................. SRS-43
Front seat ........................................................... SE-89
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner ............... SRS-3, SRS-50
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTS - Wiring diagram ....................................... AT-124
FTTS - Wiring diagram ...................... EC-334, EC-339
Fuel cut control (at no load high engine speed) EC-28
Fuel filter replacement ......................................... FL-5
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) .......... EC-311, EC-322
Fuel injection system (Bank 2) .......... EC-311, EC-322
Fuel injector .................................................... EC-659
Fuel injector and fuel tube ................................. EM-31
Fuel level sensor ................. EC-458, EC-460, EC-462
Fuel line inspection .............................................. FL-4
Fuel precautions ................................................... GI-5
Fuel pressure check .......................................... EC-82
Fuel pressure release ....................................... EC-82
Fuel pump ....................................................... EC-665
Fuel pump and gauge .......................................... FL-5
Fuel system .......................................................... FL-4
Fuel tank ............................................................ FL-10
Fuel tank temperature sensor ........... EC-332, EC-338
Fuel tank vacuum relief valve ........................... EC-36
FUELB1 - Wiring diagram ................. EC-313, EC-324
FUELB2 - Wiring diagram ................. EC-315, EC-326
Fuse ...................................................... PG-17, PG-77
Fuse and fusible link box .................................. PG-77
Fuse block ......................................................... PG-76
Fusible link ............................................ PG-17, PG-77
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Garage jack and safety stand ............................. GI-42
Gauges ................................................................. DI-5
Generator .......................................................... SC-17
Generic scan tool (GST) ................................. EC-131
Glass ...................................... GW-11, GW-62, GW-65
Glove box lamp ................................................ LT-131
GPS antenna ..................................................... AV-82

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ALPHABETICAL INDEX
Grease .............................................................. MA-11
Ground distribution ............................................ PG-31
H
H/AIM - Wiring diagram ...................................... LT-51
H/LAMP - Wiring diagram .................................... LT-9
Handling precautions for plastics ..................... BL-179
Harness connector ............................................ PG-68
Harness layout .................................................. PG-41
Hazard warning lamp ......................................... LT-63
Headlamp ............................................................. LT-5
Headlamp aiming control ................................... LT-51
Headlamp leveler - See Headlamp aiming control . LT-
51
Headlamp removal and installation .................... LT-25
Heated oxygen sensor 2 (bank 1) .... EC-276, EC-287,
EC-300
Heated oxygen sensor 2 (bank 2) .... EC-276, EC-287,
EC-300
Heated oxygen sensor 2 heater (bank 1) ........ EC-181
Heated oxygen sensor 2 heater (bank 2) ........ EC-181
Heated seat ....................................................... SE-82
Heater and cooling unit (Heater core) . ATC-157, ATC-
160
Heater unit (heater core) ............... ATC-157, ATC-160
Height (Dimensions) ........................................... GI-51
HFC134a (R134a) system identification ........... ATC-6
HFC134a (R134a) system precaution ............... ATC-5
HFC134a (R134a) system service procedure ATC-175
HFC134a (R134a) system service tools ......... ATC-14
HFC134a system service equipment precaution ATC-
11
High and low reverse clutch solenoid valve .... AT-147,
AT-149
Homelink universal transceiver ........................ BL-146
Horn ................................................................ WW-48
HORN - Wiring diagram .................................. WW-48
How to erase DTC for OBD system .................. EC-63
HSEAT - Wiring diagram ................................... SE-84
I
IATS - Wiring diagram ..................................... EC-215
ICC - Wiring diagram ....................................... ACS-20
ICC/BS - Wiring diagram ................................. EC-565
ICC/SW - Wiring diagram ................................ EC-550
ICCBOF - Wiring diagram ............................... EC-672
Identification plate .............................................. GI-49
Idle air volume learning ..................................... EC-80
Idle speed .............................................. EC-73, EC-78
Idle speed control (ISC) .................... EC-466, EC-468
Ignition coil .......................................... EM-28, EC-679
Ignition control system .................................... EC-679
Ignition key hole illumination ............................ LT-110
Ignition timing ........................................ EC-73, EC-78
IGNSYS - Wiring diagram ............................... EC-680
ILL - Wiring diagram ......................................... LT-136
Illumination ....................................................... LT-130
In vehicle sensor ........................... ATC-141, ATC-150
In-cabin Microfilter ............................................. MA-21
INJECT - Wiring diagram ................................. EC-660
Injector ............................................................. EC-659
Input clutch solenoid valve ................. AT-135, AT-137
Instrument panel .................................................. IP-10
Intake air temperature sensor ............ EC-214, EC-234
Intake door control linkage adjustment . ATC-85, ATC-
88
Intake door motor ........................... ATC-83, ATC-164
Intake manifold .................................................. EM-17
Intake sensor ................................ ATC-146, ATC-152
Intake valve timing control (Bank 1) ................ EC-161
Intake valve timing control (Bank 2) ................ EC-161
Intake valve timing control position sensor (Bank 1) ....
EC-492
Intake valve timing control position sensor (Bank 2) ....
EC-492
Intake valve timing control solenoid valve (Bank 1) EC-
189
Intake valve timing control solenoid valve (Bank 2) EC-
189
Integrated homelink transmitter - See Homelink univer-
sal tranceiver .................................................... BL-146
Intelligent cruise control (ICC) system ............... ACS-6
Interior ................................................................. EI-35
Interior lamp ...................................................... LT-110
Interior lamp on-off control ................................ LT-111
Internal gear (Transfer) ....................... TF-149, TF-176
IPDM (Intelligent power distribution module engine
room) ................................................................. PG-18
IVCB1 - Wiring diagram ................................... EC-190
IVCB2 - Wiring diagram ................................... EC-192
IVCSB1 - Wiring diagram ................................ EC-493
IVCSB2 - Wiring diagram ................................ EC-495
IVIS (Infiniti vehicle immobilizer system) .......... BL-127
IVIS (Infiniti vehicle immobilizer system) precautions ...
GI-3
IVTB1 - Wiring diagram ................................... EC-164
IVTB2 - Wiring diagram ................................... EC-166
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Jacking points ..................................................... GI-42
Junction box (J/B) .............................................. PG-76
K
Key illumination ................................................ LT-111
KEYLES - Wiring diagram .................................. BL-45
Knock sensor (KS) ........................................... EC-357
KS - Wiring diagram ........................................ EC-358
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Laser beam aiming adjustment ....................... ACS-12
Length (Dimensions) .......................................... GI-51
License lamp ...................................................... LT-89
Lifting points ....................................................... GI-43