2005 INFINITI QX4 ignition

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

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

REAR WINDOW DEFOGGER
GW-83
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Revision: October 20052005 QX56
Terminal and Reference Value for BCMEIS005YR
Terminal and Reference Value for IPDM E/REIS005YS
Work FlowEIS005YT
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-77, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-85,
"Trouble Diagnoses Symptom Chart" .
4. Does rear window defogger and door mirror defogger operate normally? YES: GO TO 5, NO: GO TO 3.
5. Inspection end.
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
9Y/BRear window defogger
switch signalWhen rear window defogger switch is pressed. 0
When rear window defogger switch is OFF. 5
38 W/L Ignition switch ON or START Ignition switch (ON or START position) Battery voltage
39 L CAN-H — —
40 P CAN-L — —
67 B Ground — 0
70 W/B Battery power supply — Battery voltage
Terminal Wire color Item ConditionVoltage (V)
(Approx.)
38 B Ground (Power) — 0
39 L CAN-H — —
40 P CAN-L — —
59 B Ground (Signal) — 0
60 BRear window defogger output
signalWhen rear window defogger switch is ON. Battery voltage
When rear window defogger switch is OFF. 0

GW-84
REAR WINDOW DEFOGGER
Revision: October 20052005 QX56
CONSULT-II Function (BCM)EIS005YU
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “BCM”.
If “BCM” is not indicated, go to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORT Changes setting of each function.
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.
BBIA0369E
BCIA0029E
BCIA0030E

REAR WINDOW DEFOGGER
GW-85
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Revision: October 20052005 QX56
6. Touch “REAR DEFOGGER”.
7. Select diagnosis mode,“DATA MONITOR” and “ACTIVE TEST”.
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
Trouble Diagnoses Symptom ChartEIS005YV

Make sure other systems using the signal of the following systems operate normally.
LIIA0153E
BCIA0031E
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 checkGW-87
2. IPDM E/R auto active test checkPG-22
3. Rear window defogger switch circuit checkGW-88
4. Rear window defogger circuit checkGW-89
5. Replace IPDM E/ RPG-28
Rear window defogger does not operate but both of door
mirror defoggers operate.1. Rear window defogger circuit checkGW-892. Filament checkGW-89
3. Replace IPDM E/RPG-28
Both door mirror defoggers do not operate but rear win-
dow defogger operates.1. Door mirror defogger power supply circuit checkGW-90
2. Replace IPDM E/RPG-28
Door mirror defogger LH does not operate. 1. Driver side door mirror defogger circuit checkGW-92

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-88
REAR WINDOW DEFOGGER
Revision: October 20052005 QX56
Rear Window Defogger Switch Circuit CheckEIS005YX
1. CHECK REAR WINDOW DEFOGGER SWITCH OPERATION
With CONSULT-II
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode
with CONSULT-II.
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
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.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
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M18 9 (Y/B) GroundRear window defogger
switch is pressed.0
Rear window defogger
switch is OFF.5
WIIA0523E
9 (Y/B) - 11 (Y/B) : Continuity should exist.
9 (Y/B) - Ground : Continuity should not exist.
LIIA2035E