2005 INFINITI QX4 relay

POWER WINDOW SYSTEM
GW-65
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Revision: October 20052005 QX56
Rear Power Vent Window Motor RH Circuit CheckEIS005YJ
1. CHECK REAR POWER VENT WINDOW SWITCH RH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor RH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor RH connector B150 terminal 1, 2 and ground.
OK or NG
OK >> Replace rear power vent window motor RH.
NG >> Repair or replace harness.
Rear Power Vent Window Relay (OPEN) CheckEIS005YK
1. CHECK REAR POWER VENT WINDOW RELAY (OPEN) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (OPEN).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (OPEN) connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK REAR POWER VENT WINDOW RELAY (OPEN)
Check continuity between rear power vent window relay (OPEN) terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace rear power vent window relay (OPEN).
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
B1501 (BR)
GroundOpening Battery voltage
Closing 0
2 (R)Opening 0
Closing Battery voltage
WIIA0290E
ConnectorTerminals (Wire color)
Voltage (V)
(Approx.)
(+) (-)
M871 (W/L)
Ground Battery voltage
5 (W/R)
LIIA1565E
Terminal Condition Continuity
3412V direct current supply
between terminals 1 and 2No
No current supply Yes
3512V direct current supply
between terminals 1 and 2Ye s
No current supply No
WIIA0291E

GW-66
POWER WINDOW SYSTEM
Revision: October 20052005 QX56
3. CHECK REAR POWER VENT WINDOW RELAY (OPEN) GROUND CIRCUIT
Check continuity between rear power vent window relay (OPEN)
connector M87 terminal 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK REAR POWER VENT WINDOW RELAY (OPEN) CIRCUIT
1. Disconnect rear power vent window switch.
2. Check continuity between rear power vent window relay (OPEN)
connector M87 terminal 2 and rear power vent window switch
connector R103 terminal 3.
OK or NG
OK >> Replace rear power vent window switch.
NG >> Repair or replace harness.
Rear Power Vent Window Relay (CLOSE) CheckEIS005YL
1. CHECK REAR POWER VENT WINDOW RELAY (CLOSE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (CLOSE).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (CLOSE) connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.4 (B) - Ground : Continuity should exist.
LIIA1567E
2 (G/R) - 3 (BR/W) : Continuity should exist.
LIIA1568E
ConnectorTerminals (Wire color)
Voltage (V)
(Approx.)
(+) (-)
M891 (W/L)
Ground Battery voltage
5 (W/R)
LIIA1565E

POWER WINDOW SYSTEM
GW-67
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Revision: October 20052005 QX56
2. CHECK REAR POWER VENT WINDOW RELAY (CLOSE)
Check continuity between rear power vent window relay (CLOSE) terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace rear power vent window relay (CLOSE).
3. CHECK REAR POWER VENT WINDOW RELAY (CLOSE) GROUND CIRCUIT
Check continuity between rear power vent window relay (CLOSE)
connector M89 terminal 4 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK REAR POWER VENT WINDOW RELAY (CLOSE) CIRCUIT
1. Disconnect rear power vent window switch.
2. Check voltage between rear power vent window relay (CLOSE) connector M89 terminal 2 and rear power
vent window switch R103 terminal 4.
OK or NG
OK >> Replace rear power vent window switch.
NG >> Repair or replace harness.
Terminal Condition Continuity
3412V direct current supply
between terminals 1 and 2No
No current supply Yes
3512V direct current supply
between terminals 1 and 2Ye s
No current supply No
WIIA0291E
4 (B) - Ground : Continuity should exist.
LIIA1567E
2 (R/G) - 4 (V/W) : Continuity should exist.
LIIA1569E

REAR WINDOW DEFOGGER
GW-77
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Revision: October 20052005 QX56
REAR WINDOW DEFOGGERPFP:25350
Component Parts and Harness Connector LocationEIS005YM
System DescriptionEIS005YN
The rear window defogger system is controlled by BCM (body control module) and IPDM E/R (intelligent
power distribution module engine room).
The rear window defogger operates only for approximately 15 minutes.
Power is supplied at all times

through 15A fuses (No. 43, 46, and 47 located in the IPDM E/R)

to rear window defogger relay and heated mirror relay (located in the IPDM E/R)

through 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM terminal 70.
With the ignition switch turned to ON or START position,
Power is supplied

through ignition switch

to rear window defogger relay (located in the IPDM E/R)

through 10A fuse (No. 59, located in the fuse and relay box)

to BCM terminal 38

through 10A fuse [No. 8, located in the fuse block (J/B)]

to front air control terminal 14.
Ground is supplied

to BCM terminal 67

to front air control terminal 1
LIIA1981E

GW-78
REAR WINDOW DEFOGGER
Revision: October 20052005 QX56

through body grounds M57, M61 and M79

to IPDM E/R terminals 38 and 59

through body grounds E9, E15 and E24.
When front air control (rear window defogger switch) is turned to ON,
Ground is supplied

to BCM terminal 9

through front air control terminal 11

through front air control terminal 1

through body grounds M57, M61 and M79.
Then rear window defogger switch is illuminated.
Then BCM recognizes that rear window defogger switch is turned to ON.
Then it sends rear window defogger switch signals to IPDM E/R and display control unit via CAN communica-
tion (CAN-H, CAN-L).
When display control unit receives rear window defogger switch signals, and displays on the screen.
When IPDM E/R receives rear window defogger switch signals,
Ground is supplied

to rear window defogger relay (located in the IPDM E/R)

through IPDM E/R terminal 38

through IPDM E/R terminal 59

through body grounds E9, E15 and E24
and then rear window defogger relay is energized.
With power and ground supplied, rear window defogger filaments heat and defog the rear window.
When rear window defogger relay is turned to ON
Power is supplied

through heated mirror relay (located in the IPDM E/R)

through IPDM E/R terminal 23

to door mirror defogger (LH and RH) terminal 10.
Door mirror defogger (LH and RH) is grounded through body grounds M57, M61 and M79.
With power and ground supplied, rear window defogger filaments heat and defog the rear window and door
mirror defogger filaments heat and defog the mirror.
CAN Communication System DescriptionEIS005YO
Refer to LAN-5, "CAN COMMUNICATION" .

REAR WINDOW DEFOGGER
GW-87
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Revision: October 20052005 QX56
BCM Power Supply and Ground Circuit CheckEIS005YW
1. CHECK FUSES AND FUSIBLE LINK

Check 10A fuse (No. 8, located in the fuse block (J/B)]

Check 10A fuse (No. 59, located in the fuse and relay box)

Check 50A fusible link (letter f located in the fuse and fusible link box)
NOTE:
Refer to GW-77, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM connector M18, M20 terminals 38, 70
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector M20 terminal 67 and ground.
OK or NG
OK >> BCM power supply and ground circuit is OK.
NG >> Repair or replace harness.70 (W/B) - Ground : Battery voltage
38 (W/L) - Ground : Battery voltage
LIIA0914E
67 (B) - Ground : Continuity should exist.
LIIA0915E

GW-90
REAR WINDOW DEFOGGER
Revision: October 20052005 QX56
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-94, "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 CheckEIS005Z0
1. CHECK FUSE
Check if any of the following fuses for fuse block (J/B) are blown.
NOTE:
Refer to GW-77, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
GW-77, "
Component Parts and Harness Connector Location" . - (B) - Ground : Continuity should exist.
LIIA0409E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
E124 60 (B) GroundRear window defogger
switch ON. Battery voltage
Rear window defogger
switch OFF.0
WIIA0525E
COMPONENT PARTS AMPERE FUSE NO.
IPDM E/R 15A 43

IDX-4
ALPHABETICAL INDEX
Drive chain (Transfer) ......................... TF-147, TF-174
Drive pinion diff. inspection ............................. RFD-13
Drive pinion height .......................................... RFD-18
Drive shaft (rear) ............................................... RAX-7
Driver air bag .................................................. SRS-46
DTC work support ............................................ EC-136
DTRL - Wiring diagram ....................................... LT-37
Duct and grilles .............................................. ATC-170
DVD Player ........................................................ AV-60
E
ECM input/output signal ..................... EC-117
, EC-141
ECM power supply ............................. EC-157, EC-393
ECM relay ........................................................ EC-157
ECM/PW - Wiring diagram ............................... EC-394
ECTS - Wiring diagram .................................... EC-197
Electric sunroof .................................................. RF-10
Electric throttle control actuator ......... EC-397, EC-399
Electrical load signal circuit .............................. EC-648
Electrical units location ...................................... PG-63
Electronic ignition (EI) system ........................... EC-26
Engine control circuit diagram ......................... EC-115
Engine control component parts location ......... EC-108
Engine control module (ECM) .......................... EC-383
Engine control system diagram ......................... EC-23
Engine coolant .................................................. CO-10
Engine coolant temperature sensor (ECTS) ... EC-195,
EC-208
Engine fail-safe system .................................... EC-103
Engine oil ............................................................. LU-7
Engine oil filter replacement ............................. MA-17
Engine oil precautions .......................................... GI-7
Engine oil replacement ..................................... MA-17
Engine removal ................................................. EM-69
Engine room cover ............................................ EM-11
Engine serial number .......................................... GI-48
ETC1 - Wiring diagram .................................... EC-400
ETC2 - Wiring diagram .................................... EC-407
ETC3 - Wiring diagram .................................... EC-411
EVAP canister .................................................... EC-35
EVAP canister purge volume control solenoid valve ....
EC-318
, EC-531
EVAP canister vent control valve ....... EC-325, EC-539
EVAP control system (small leak) diagnosis .. EC-309,
EC-349
, EC-357
EVAP control system pressure sensor .... EC-332, EC-
335, EC-341
EVAP control system purge flow monitoring diagnosis
EC-304
EVAP vapor lines inspection ............................. MA-20
Evaporative emission (EVAP) system ............... EC-32
Evaporator ..................................................... ATC-186
Exhaust manifold .............................................. EM-19
Exhaust system ................................................... EX-3
Exhaust system inspection .................................. EX-3
Expansion valve ............................................. ATC-188
F
F/FOG - Wiring diagram ..................................... LT-71
F/PUMP - Wiring diagram ............................... EC-638
Final drive pre-inspection .................. FFD-14, RFD-13
Final drive removal and installation ... FFD-11, RFD-10
Flow charts .......................................................... GI-27
Fluid temperature sensor (A/T) ........................ AT-126
Fluids ................................................................ MA-11
Fluorescent leak detector .............................. ATC-189
Fog lamp, front ................................................... LT-69
Foot lamp ......................................................... LT-130
Freeze frame data ............................... EC-54, EC-130
Front brake solenoid valve ................. AT-144, AT-146
Front bumper ...................................................... EI-13
Front case (Transfer) .......................... TF-147, TF-174
Front combination lamp removal and installation LT-32
Front door ............................. BL-128, BL-131, GW-68
Front Door Trim ................................................... EI-32
Front drive shaft (Transfer) ................. TF-147, TF-174
Front fog lamp .................................................... LT-69
Front passenger air bag .................................. SRS-51
Front seat ........................................................... SE-97
Front seat belt ...................................................... SB-3
Front seat belt pre-tensioner ............... SRS-3, SRS-58
Front washer ...................................................... WW-4
Front wiper ......................................................... WW-4
FTTS - Wiring diagram ...................... EC-255, EC-260
Fuel cut control (at no load high engine speed) EC-27
Fuel filter replacement ......................................... FL-5
Fuel gauge ............................................................ DI-5
Fuel injection system (Bank 1) .......... EC-236, EC-245
Fuel injection system (Bank 2) .......... EC-236, EC-245
Fuel injector and fuel tube ................................. EM-29
Fuel level sensor ................. EC-366, EC-368, EC-370
Fuel line inspection .............................................. FL-3
Fuel pressure check .......................................... EC-93
Fuel pressure release ....................................... EC-93
Fuel pump ....................................................... EC-637
Fuel pump and gauge .......................................... FL-5
Fuel system .......................................................... FL-3
Fuel tank .............................................................. FL-9
Fuel tank temperature sensor ........... EC-253, EC-259
Fuel tank vacuum relief valve ........................... EC-35
FUELB1 - Wiring diagram ................. EC-238, EC-247
FUELB2 - Wiring diagram ................. EC-239, EC-248
Fuse ...................................................... PG-66, PG-77
Fuse and fusible link box .................................. PG-77
Fuse block ......................................................... PG-76
Fusible link ............................................ PG-66, PG-77
G
Garage jack and safety stand ............................. GI-40
Gauges ................................................................. DI-5
Generator .......................................................... SC-17
Generic scan tool (GST) ................................. EC-139
Glass ...................................... GW-11, GW-68, GW-71
Glove box lamp ................................................ LT-153