INFINITI QX56 2004 Factory Service Manual
Manufacturer: INFINITI, Model Year: 2004, Model line: QX56, Model: INFINITI QX56 2004Pages: 3371, PDF Size: 78.5 MB
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GW-36
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
Trouble Diagnoses Symptom ChartEIS0 02 UW
Check that other systems using the signal of the following systems operate normally.
Symptom Repair order Refer to page
None of the power windows can be operated using any switch1. BCM power supply and ground circuit checkGW-38
2. Main power window and door lock/unlock
power supply and ground circuit checkGW-39
3. Power window serial link check front LH and
RHGW-40
Front power window LH alone does not operate1. Main power window and door lock/unlock
power supply and ground circuit checkGW-392. Front power window motor LH circuit checkGW-41
3. Replace main power window and door lock/
unlock switchEI-31
Front power window RH alone does not operate1. Power window and door lock/unlock switch
RH power supply and ground circuit checkGW-402. Power window serial link check front LH and
RHGW-54
3. Front power window motor RH circuit checkGW-42
4. Replace BCMBCS-19
Rear power window LH alone does not operate1. Rear power window control unit LH or RH
power supply and ground circuit checkGW-56
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-58
3. Rear power window motor LH circuit checkGW-58
4. Power window serial link check rear LH and
RHGW-64
5. Replace BCMBCS-19
Rear power window RH alone does not operate1. Rear power window control unit LH or RH
power supply and ground circuit checkGW-56
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-58
3. Rear power window motor RH circuit checkGW-59
4. Power window serial link check rear LH and
RHGW-64
5. Replace BCMBCS-19
Rear power vent windows do not operate 1. Rear power vent window switch circuit checkGW-65
Rear power vent window LH alone does not operate1. Rear power vent window motor LH circuit
checkGW-65
Rear power vent window RH alone does not operate1. Rear power vent window motor RH circuit
checkGW-66
Rear power vent windows do not open1. Rear power vent window relay (OPEN)
checkGW-65
Rear power vent windows do not close1. Rear power vent window relay (CLOSE)
checkGW-65
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Anti-pinch system does not operate normally (Front LH)1. Door window sliding part malfunction
A foreign material adheres to window glass
or glass run rubber.
Glass run rubber wear or deformation.
Sash is tilted too much, or not enough.—
2. Limit switch adjustingGW-71
3. Limit switch circuit check front LHGW-43
4. Encoder circuit check front LHGW-46
Anti-pinch system does not operate normally (Front RH)1. Door window sliding part malfunction
A foreign material adheres to window glass
or glass run rubber.
Glass run rubber wear or deformation.
Sash is tilted too much, or not enough.—
2. Limit switch adjustingGW-71
3. Limit switch circuit check front RHGW-44
4. Encoder circuit check front RHGW-48
Anti-pinch system does not operate normally (Rear LH)1. Door window sliding part malfunction
A foreign material adheres to window glass
or glass run rubber.
Glass run rubber wear or deformation.
Sash is tilted too much, or not enough.—
2. Limit switch adjustingGW-72
3. Limit switch circuit check rear LH or RHGW-60
4. Encoder circuit check rear LH or RHGW-62
Anti-pinch system does not operate normally (Rear RH)1. Door window sliding part malfunction
A foreign material adheres to window glass
or glass run rubber.
Glass run rubber wear or deformation.
Sash is tilted too much, or not enough.—
2. Limit switch adjustingGW-72
3. Limit switch circuit check rear LH or RHGW-60
4. Encoder circuit check rear LH or RHGW-62
Power window retained power operation does not operate properly1. Check the retained power operation mode
setting.GW-342. Door switch checkGW-50
3. Replace BCM.BCS-19
Power windows do not operate by key cylinder switch LH1. Door key cylinder switch LH checkGW-522. Replace main power window and door lock/
unlock switchEI-31
Power window lock switch does not function 1. Power window lock switch circuit checkGW-54
Symptom Repair order Refer to page
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GW-38
POWER WINDOW SYSTEM
Revision: August 20072004 QX56
BCM Power Supply and Ground Circuit CheckEIS002UX
1. CHECK FUSE AND FUSIBLE LINK
Check 50A fusible link (letter f located in the fuse and fusible link box).
Check 10A fuse (No. 59, located in the fuse and relay box).
NOTE:
Refer to GW-15, "
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-
3, "PRECAUTIONS" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM connector M18, M20 terminals 11, 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 >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.11 (O) - Ground : Battery voltage
38 (W/L) - Ground : Battery voltage
70 (W/B) - Ground : Battery voltage
WIIA0504E
67 (B) - Ground : Continuity should exist.
LIIA0915E
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Main Power Window and Door Lock/Unlock Switch Power Supply and Ground
Circuit Check
EIS002UY
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 terminal 10, D8
terminal 19 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/unlock switch connector D8 terminal 17 and
ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
3. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector M20 terminals 68, 69 and main power window and door lock/
unlock switch connector D7 terminal 10 and D8 terminal 19.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.10 (W/L) - Ground : Battery voltage
19 (W/R) - Ground : Battery voltage
LIIA2297E
17 (B) - Ground : Continuity should exist.
LIIA0392E
68 (W/L) - 10 (W/L) : Continuity should exist.
69 (W/R) - 19 (W/R) : Continuity should exist.
WIIA0506E
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POWER WINDOW SYSTEM
Revision: August 20072004 QX56
4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminals 68, 69 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace BCM.
Power Window and Door Lock/Unlock Switch RH Power Supply and Ground
Circuit Check
EIS002UZ
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between power window and door lock/unlock switch RH connector D105 terminal 10 and
ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector D105 terminal 11 and
ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.68 (W/L) - Ground : Battery voltage
69 (W/R) - Ground : Battery voltage
LIIA0917E
10 (W/R) - Ground : Battery voltage
LIIA1257E
11 (B) - Ground : Continuity should exist.
LIIA1258E
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3. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check continuity between BCM connector (A) M20 terminal 69 and power window and door lock/unlock
switch RH connector (B) D105 terminal 10.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 terminal 69 and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace BCM.
Front Power Window Motor LH Circuit CheckEIS002V0
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 terminals 8, 11 and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace main power window and door lock/unlock
switch. 69 (W/R) - 10 (W/R) : Continuity should exist.
LIIA2298E
69 (W/R) - Ground : Battery voltage
WIIA0508E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D78 (G/R)
GroundUP Battery voltage
DOWN 0
11 (G/W)UP 0
DOWN Battery voltage
LIIA0317E
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POWER WINDOW SYSTEM
Revision: August 20072004 QX56
2. CHECK POWER WINDOW MOTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
3. Check continuity between main power window and door lock/unlock switch connector D7 terminals 8, 11
and front power window motor LH connector D9 terminal 1, 2.
OK or NG
OK >> Replace front power window motor LH.
NG >> Repair or replace harness.
Front Power Window Motor RH Circuit CheckEIS002V1
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL
1. Connect power window and door lock/unlock switch RH.
2. Turn ignition switch ON.
3. Check voltage between power window and door lock/unlock switch RH connector D105 terminals 8, 9 and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace power window and door lock/unlock switch RH.
2. CHECK FRONT POWER WINDOW MOTOR RH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front power window motor RH and power window and door lock/unlock switch RH.
3. Check continuity between power window and door lock/unlock switch RH connector D105 terminals 8, 9
and front power window motor RH connector D104 terminals 1, 2.
OK or NG
OK >> Replace front power window motor RH.
NG >> Repair or replace harness.8 (G/R) - 2 (G/R) : Continuity should exist.
11 (G/W) - 1 (G/W) : Continuity should exist.
LIIA1260E
ConnectorTerminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
D1059 (G)
GroundUP 0
DOWN Battery voltage
8 (L)UP Battery voltage
DOWN 0
LIIA1261E
8 (L) - 2 (L) : Continuity should exist.
9 (G) - 1 (G) : Continuity should exist.
LIIA1262E
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Limit Switch Circuit Check Front LHEIS002V2
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH LIMIT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 termimal 9 and
ground.
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.
2. CHECK FRONT POWER WINDOW MOTOR LH LIMIT SIGNAL
1. Disconnect front power window motor LH.
2. Check voltage between front power window motor LH connector D9 terminal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. CHECK LIMIT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front power window motor LH connector D9 terminal 6 and ground.
OK or NG
OK >> Replace front power window motor LH.
NG >> GO TO 4.
ConnectorTerminal (Wire color)
Condition Voltage (V)
(Approx.)
(+) (-)
D7 9 (O) GroundDriver side door window is
between fully-open and just
before fully-closed position
(ON)0
Driver side door window is
between just before fully-
closed position and fully-
closed position (OFF)5
LIIA0339E
5 (O) - Ground : Approx. 5V
LIIA0922E
6 (W/B) - Ground : Continuity should exist.
LIIA0923E
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POWER WINDOW SYSTEM
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4. CHECK HARNESS CONTINUITY
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between front power window motor LH connector D9 terminal 6 and main power window
and door lock/unlock switch connector D7 terminal 2.
OK or NG
OK >> Replace main power window and door lock/unlock
switch.
NG >> Repair or replace harness.
5. CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between front power window motor LH connector D9 terminal 5 and main power window
and door lock/unlock switch connector D7 terminal 9.
OK or NG
OK >> Replace main power window and door lock/unlock
switch.
NG >> Repair or replace harness.
Limit Switch Circuit Check Front RHEIS002V3
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH LIMIT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between power window motor RH connector D105 terminal 15 and ground.
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.6 (W/B) - 2 (W/B) : Continuity should exist.
LIIA0924E
5 (O) - 9 (O) : Continuity should exist.
LIIA0925E
ConnectorTerminals (Wire color)
Condition Voltage (V)
(Approx.)
(+) (-)
D105 15 (G/W) GroundPassenger side door window
is between fully-open and
just before fully-closed posi-
tion (ON)0
Passenger side door window
is between just before fully-
closed position and fully-
closed position (OFF)5
LIIA1263E
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2. CHECK FRONT POWER WINDOW MOTOR RH LIMIT SIGNAL
1. Disconnect front power window motor RH.
2. Check voltage between front power window motor RH connector D104 terminal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3. CHECK LIMIT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between front power window motor RH connector D104 terminal 6 and ground.
OK or NG
OK >> Replace front power window motor RH.
NG >> GO TO 4.
4. CHECK HARNESS CONTINUITY
1. Disconnect power window and door lock/unlock switch RH.
2. Check continuity between front power window motor RH connector D104 terminal 6 and power window
and door lock/unlock switch RH connector D105 terminal 3.
OK or NG
OK >> Replace power window and door lock/unlock switch RH.
NG >> Repair or replace harness.5 (G/W) - Ground : Approx. 5V
LIIA0922E
6 (W/B) - Ground : Continuity should exist.
LIIA0923E
6 (W/B) - 3 (W/B) : Continuity should exist.
LIIA1264E