service INFINITI QX56 2007 Factory Service Manual

POWER WINDOW SYSTEM
GW-45
< SERVICE INFORMATION >
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• Check front door lock assembly LH (key cylinder switch) (“KEY
CYL LK SW”) in “DATA MONITOR” mode for “POWER DOOR
LOCK SYSTEM” with CONSULT-II. Refer to BL-24, "
CONSULT-II
Function (BCM)".
• Check front door lock assembly LH (key cylinder switch) (“KEY
CYL UN-SW”) in “DATA MONITOR” mode for “POWER DOOR
LOCK SYSTEM” with CONSULT-II. Refer to BL-24, "
CONSULT-II
Function (BCM)" .
Without CONSULT-II
Check voltage between main power window and door lock/unlock
switch connector and ground.
OK or NG
OK >> Front door lock assembly LH (key cylinder switch) is OK.
NG >> GO TO 2.
2.CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and
front door lock assembly (key cylinder switch).
3. Check continuity between main power window and door lock/
unlock switch connector D7 terminals 4, 6 and front door lock
assembly LH (key cylinder switch) connector D14 terminals 1, 6.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) GROUND “KEY CYL LK-SW” should be “ON” when key inserted in
door key cylinder is turned to lock.
LIIA0047E
“KEY CYL UN-SW” should be “ON” when key inserted in
door key cylinder was turned to unlock.
LIIA0050E
ConnectorTe r m i n a l s
Key position Voltage (V)
(Approx.)
(+) (-)
D76
GroundNeutral / Unlock 5
Lock 0
4Neutral / Lock 5
Unlock 0
LIIA1448E
6 - 6 : Continuity should exist.
4 - 1 : Continuity should exist.
LIIA1571E

GW-46
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
Check continuity between front door lock assembly LH (key cylinder
switch) connector D14 terminal 5 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)
Check continuity between front door lock assembly LH (key cylinder
switch) terminals 1, 6 and 5.
OK or NG
OK >> Replace main power window and door lock/unlock
switch.Refer to EI-31, "
Removal and Installation".
NG >> Replace front door lock assembly LH (key cylinder switch). Refer to BL-110, "
Removal and Instal-
lation".
Power Window Serial Link Check Front LH and RHINFOID:0000000003533048
1.CHECK BUS OUTPUT SIGNAL
With CONSULT-II
Check door lock and unlock switch (“LOCK SW DR/AS”, “UNLK SW
DR/AS”) in DATA MONITOR mode for “MULTI REMOTE ENT” with
CONSULT-II. Refer to BL-24, "
CONSULT-II Function (BCM)".
• When door lock and unlock switch is turned to LOCK
• When door lock and unlock switch is turned to UNLOCK
Without CONSULT-II
1. Remove key from ignition switch, and close the front door LH
and RH.
2. Check the signal between BCM connector and ground with
oscilloscope when door lock and unlock switch (front LH and
front RH) is turned to “LOCK” or “UNLOCK”.
3. Make sure signals which are shown in the figure below can be
detected during 10 seconds just after door lock and unlock
switch (front LH and front RH) is turned to “LOCK” or
“UNLOCK”.5 - Ground : Continuity should exist.
LIIA1572E
Terminals Key position Continuity
6
5Neutral / Unlock No
Lock Yes
1Neutral / Lock No
Unlock Yes
LIIA1573E
LOCK SW DR/AS : ON
UNLK SW DR/AS : ON
LIIA0172E
LIIA0391E

POWER WINDOW SYSTEM
GW-47
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK BCM BUS OUTPUT SIGNAL
Check power window serial link (“POWER WINDOW DOWN”) in
“ACTIVE TEST” mode with CONSULT-II. Refer to GW-31, "
CON-
SULT-II Function (BCM)".
When “ACTIVE TEST” is executed, is the window of driver side and
passenger side lowered.
OK or NG
OK >> Further inspection is necessary. Refer to GW-32, "Trou-
ble Diagnosis Symptom Chart".
NG >> Replace BCM. Refer to BCS-24, "
BCM".
3.CHECK POWER WINDOW SWITCH GROUND
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and
power window and door lock/unlock switch RH.
3. Check continuity between main power window and door lock/
unlock switch connector D8 terminal 17 and ground.
4. Check continuity between power window and door lock/unlock
switch RH connector D105 terminal 11 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4.CHECK POWER WINDOW SERIAL LINK CIRCUIT
ConnectorTe r m i n a l s
Signal
(+) (-)
M18 22 Ground
PIIA2344E
PIIA3080E
17 - Ground : Continuity should exist.
LIIA0392E
11 - Ground : Continuity should exist.
LIIA1270E

GW-48
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminal 22 and
main power window and door lock/unlock switch connector D7
terminal 14.
3. Check continuity between BCM connector M18 terminal 22 and
power window and door lock/unlock switch RH connector D105
terminal 16.
OK or NG
OK >> Replace main power window and door lock/unlock
switch or power window and door lock/unlock switch
RH. Refer to EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
Rear Power Window Control Unit LH or RH Power Supply and Ground Circuit Inspec-
tion
INFOID:0000000003533049
1.CHECK POWER WINDOW POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Rear power window control unit LH.
3. Turn ignition switch ON.
4. Check voltage between rear power window control unit LH or
RH connector D209 (LH), D309 (RH) terminal 13 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK POWER WINDOW GROUND CIRCUIT
1. Disconnect rear power window control unit LH or RH.
2. Check continuity between rear power window control unit LH or
RH connector D209 (LH), D309 (RH) terminal 15 and ground.
OK or NG
OK >> Rear power window control unit LH or RH power supply
and ground circuit is OK. Refer to GW-32, "
Trouble
Diagnosis Symptom Chart".
NG >> Repair or replace harness.
3.CHECK REAR POWER WINDOW CONTROL UNIT LH OR RH POWER SUPPLY CIRCUIT 22 - 14 : Continuity should exist.
LIIA0394E
22 - 16 : Continuity should exist.
LIIA1271E
13 - Ground : Battery voltage
LIIA1346E
15 - Ground : Continuity should exist.
LIIA2043E

POWER WINDOW SYSTEM
GW-49
< SERVICE INFORMATION >
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1. Disconnect BCM.
2. Check continuity between BCM connector M20 terminal 69 and
rear power window control unit LH or RH connector D209 (LH),
D309 (RH) terminal 13.
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. Refer to BCS-24, "
BCM".
Rear Power Window Switch LH or RH Power Supply and Ground Circuit Inspection
INFOID:0000000003533050
1.CHECK POWER WINDOW POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH or RH.
3. Turn ignition switch ON.
4. Check voltage between rear power window switch LH or RH
connector D203 (LH), D303 (RH) terminals 2, 3 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK POWER WINDOW GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH or RH.
3. Check continuity between rear power window switch LH or RH
connector D203 (LH), D303 (RH) terminals 1, 7 and ground.
OK or NG
OK >> Rear power window switch LH or RH power supply and
ground circuit is OK. Refer to GW-32, "
Trouble Diagno-
sis Symptom Chart".
NG >> Repair or replace harness.69 - 13 : Continuity should exist.
LIIA1352E
69 - Ground : Battery voltage
WIIA0508E
2 - Ground : Battery voltage
3 - Ground : Battery voltage
LIIA1348E
1 - Ground : Continuity should exist.
7 - Ground : Continuity should exist.
LIIA2044E

GW-50
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
Rear Power Window Motor LH Circuit Inspection
INFOID:0000000003533051
1.CHECK REAR POWER WINDOW SWITCH LH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window switch LH connector
D203 terminals 4, 5 and ground.
OK or NG
OK >> Replace rear power window switch LH. Refer to EI-31, "Removal and Installation".
NG >> GO TO 2.
2.CHECK REAR POWER WINDOW SWITCH LH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch LH and rear power win-
dow control unit LH.
3. Check continuity between rear power window switch LH connec-
tor D203 terminals 4, 5 and rear power window control unit LH
connector D209 terminals 9, 10.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK REAR POWER WINDOW MOTOR LH CIRCUIT
1. Disconnect rear power window motor LH.
2. Check continuity between rear power window control unit LH
connector D209 terminals 11, 12 and rear power window motor
LH connector D204 terminals 1, 2.
OK or NG
OK >> Replace rear power window motor LH. Refer to GW-62,
"Removal and Installation".
NG >> Repair or replace harness.
Rear Power Window Motor RH Circuit InspectionINFOID:0000000003533052
1.CHECK REAR POWER WINDOW SWITCH RH OUTPUT SIGNAL
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D2034
GroundClosing 0
Opening Battery voltage
5Closing Battery voltage
Opening 0
LIIA2365E
4 - 9 : Continuity should exist.
5 - 10 : Continuity should exist.
LIIA1379E
11 - 2 : Continuity should exist.
12 - 1 : Continuity should exist.
LIIA1380E

POWER WINDOW SYSTEM
GW-51
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1. Turn ignition switch ON.
2. Check voltage between rear power window switch RH connector
D303 terminals 4, 5 and ground.
OK or NG
OK >> Replace rear power window switch RH. Refer to EI-31, "Removal and Installation".
NG >> GO TO 2.
2.CHECK REAR POWER WINDOW SWITCH RH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window switch RH and rear power win-
dow control unit RH.
3. Check continuity between rear power window switch RH con-
nector D303 terminals 4, 5 and rear power window control unit
RH connector D309 terminals 9, 10.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK REAR POWER WINDOW MOTOR RH CIRCUIT
1. Disconnect rear power window motor RH.
2. Check continuity between rear power window control unit RH
connector D309 terminals 11, 12 and rear power window motor
RH connector D304 terminals 1, 2.
OK or NG
OK >> Replace rear power window motor RH. Refer to GW-62,
"Removal and Installation".
NG >> Repair or replace harness.
Limit Switch Circuit Inspection Rear LH and RHINFOID:0000000003533053
1.CHECK REAR POWER WINDOW MOTOR LH AND RH LIMIT SWITCH SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window control unit LH or
RH connector and ground.
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
D3034
GroundClosing 0
Opening Battery voltage
5Closing Battery voltage
Opening 0
LIIA2365E
4 - 9 : Continuity should exist.
5 - 10 : Continuity should exist.
LIIA1379E
11 - 2 : Continuity should exist.
12 - 1 : Continuity should exist.
LIIA1380E
ConnectorTe r m i n a l s
Condition Voltage (V)
(Approx.)
(+) (-)
LIIA2366E

GW-52
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
OK or NG
OK >> Limit switch circuit is OK.
NG >> GO TO 2.
2.CHECK LIMIT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power window motor LH or RH.
3. Check continuity between rear power window motor LH or RH
connector D204 (LH), D304 (RH) terminal 6 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK HARNESS CONTINUITY
1. Disconnect rear power window control unit LH or RH.
2. Check continuity between rear power window motor LH or RH
connector D204 (LH), D304 (RH) terminal 6 and rear power win-
dow control unit LH or RH connector D209 (LH), D309 (RH) ter-
minal 3.
OK or NG
OK >> Replace rear power window switch LH or RH. Refer to
EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
4.CHECK REAR POWER WINDOW SWITCH LH OR RH OUTPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between rear power window control unit LH or
RH harness connector D209 (LH) or D309 (RH) terminal 2 (SB)
and ground.
OK or NG
OK >> GO TO 5.
NG >> Replace rear power window control unit LH or RH.
5.CHECK HARNESS CONTINUITY
D209 (LH)
D309 (RH)3GroundRear power window LH or RH
is between fully-open and just
before fully-closed position
(ON)0
Rear power window LH or RH
is between just before fully-
closed position and fully-
closed position (OFF)5
6 - Ground : Continuity should exist.
LIIA0380E
6 - 3 : Continuity should exist.
LIIA1383E
2 - Ground : Approx. 5V
LIIA2367E

POWER WINDOW SYSTEM
GW-53
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Disconnect rear power window control unit LH or RH.
3. Check continuity between rear power window control unit LH or
RH connector D209 (LH), D309 (RH) terminal 2 and rear power
window motor LH or RH connector D204 (LH), D304 (RH) termi-
nal 5.
OK or NG
OK >> Replace rear power window motor LH or RH. Refer to
GW-62, "
Removal and Installation".
NG >> Repair or replace harness.
Encoder Circuit Inspection Rear LH or RHINFOID:0000000003533054
1.CHECK REAR POWER WINDOW MOTOR LH OR RH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect rear power window motor LH or RH.
3. Turn ignition switch ON.
4. Check voltage between rear power window motor LH or RH con-
nector D204 (LH) or D304 (RH) terminal 4 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window motor LH or RH and rear power
window control unit LH or RH.
3. Check continuity between rear power window motor LH or RH
connector D204 (LH) or D304 (RH) (B) terminal 4 and rear
power window control unit LH or RH connector D209 (LH) or
D309 (RH) (A) terminal 5.
OK or NG
OK >> Replace rear power window switch LH or RH. Refer to
EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
3.CHECK ENCODER GROUND
1. Disconnect rear power window motor LH or RH.
2. Check continuity between rear power window motor LH or RH
connector D204 (LH) or D304 (RH) terminal 6 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK ENCODER GROUND CIRCUIT2 - 5 : Continuity should exist.
LIIA1385E
4 - Ground : Approx. 10V
LIIA0378E
4 - 5 : Continuity should exist.
LIIA2358E
6 - Ground : Continuity should exist.
LIIA0380E

GW-54
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
1. Disconnect rear power window control unit LH or RH.
2. Check continuity between rear power window motor LH or RH
connector D204 (LH) or D304 (RH) terminal 6 and rear power
window control unit LH or RH connector D209 (LH), D309 (RH)
terminal 3.
OK or NG
OK >> Replace rear power window control unit LH or RH.
NG >> Repair or replace harness.
5.CHECK ENCODER SIGNAL
1. Connect rear power window motor LH or RH and rear power
window control unit LH or RH.
2. Turn ignition switch ON.
3. Check the signal between rear power window control unit LH or
RH connector D209 (LH) or D309 (RH) terminal 4 and ground
with oscilloscope.
OK or NG
OK >> GO TO 6.
NG >> Replace rear power window control unit LH or RH.
6.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear power window control unit LH or RH and rear
power window motor LH or RH.
3. Check continuity between rear power window control unit LH or
RH connector D209 (LH) or D309 (RH) terminal 4 and rear
power window motor LH or RH connector D204 (LH), D304 (RH)
terminal 3.
OK or NG
OK >> Replace rear power window motor LH or RH. Refer to
GW-62, "
Removal and Installation".
NG >> Repair or replace harness.
Power Window Serial Link Check Rear LH or RHINFOID:0000000003533055
1.CHECK REAR POWER WINDOW CONTROL UNIT LH OR RH
1. Replace with operative rear power window control unit LH or RH.
2. Does window operate normally?
OK or NG
OK >> Replace rear power window control unit LH or RH.
NG >> GO TO 2.6 - 3 : Continuity should exist.
LIIA1383E
Connec-
torTe r m i n a l s
Condition Signal
(+) (-)
D209
(LH)4
Ground Opening
D309
(RH)4
LIIA2368E
OCC3383D
4 - 3 : Continuity should exist.
LIIA1389E