2005 INFINITI QX4 air condition

POWER WINDOW SYSTEM
GW-67
C
D
E
F
G
H
J
K
L
MA
B
GW
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-83
C
D
E
F
G
H
J
K
L
MA
B
GW
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-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

REAR WINDOW DEFOGGER
GW-89
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: October 20052005 QX56
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-147, "FRONT
AIR CONTROL" .
NG >> Replace BCM. Refer to BCS-20, "
Removal and Installa-
tion of BCM" .
Rear Window Defogger Circuit CheckEIS0062Z
1. CHECK FUSE
Check if any of the following fuses for IPDM E/R 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" .
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 (Y/B) - Ground : Approx. 5
WIIA0523E
COMPONENT PARTS AMPERE FUSE NO.
IPDM E/R 15A 46
IPDM E/R 15A 47
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D406 + (B) GroundRear window defogger
switch ON. Battery voltage
Rear window defogger
switch OFF.0
LIIA0655E

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

REAR WINDOW DEFOGGER
GW-91
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: October 20052005 QX56
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
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.
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
E12023
(GR/W)GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA0977E
23 (GR/W) - 10 (GR/W) : Continuity should exist.
LIIA1453E
11 (B) - Ground : Continuity should exist.
LIIA1454E

GW-92
REAR WINDOW DEFOGGER
Revision: October 20052005 QX56
5. CHECK DOOR MIRROR DEFOGGER
Check continuity between each door mirror 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-97, "
Door Mirror Assembly" .
Door Mirror LH Defogger Circuit CheckEIS005Z1
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 CIRCUIT
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.10 - 11 : Continuity should exist.
LIIA2305E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D410
(GR/W)GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA1456E
11 (B) - Ground : Continuity should exist.
LIIA1458E

REAR WINDOW DEFOGGER
GW-93
C
D
E
F
G
H
J
K
L
MA
B
GW
Revision: October 20052005 QX56
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-97, "
Door Mirror
Assembly" .
Door Mirror RH Defogger Circuit CheckEIS005Z2
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 terminal 11 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.10 - 11 : Continuity should exist.
LIIA2305E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D107 10 (GR/W) GroundRear window defogger
switch ON Battery voltage
Rear window defogger
switch OFF0
LIIA1456E
11 (B) - Ground : Continuity should exist.
LIIA1458E