2007 INFINITI QX56 service

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

POWER WINDOW SYSTEM
GW-55
< SERVICE INFORMATION >
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2.CHECK POWER WINDOW SERIAL LINK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and
rear power window control unit LH or RH.
3. Check continuity between main power window and door lock/
unlock switch connector D7 terminal 14 and rear power window
control unit LH or RH connector D209 (LH) or D309 (RH) termi-
nal 1.
OK or NG
OK >> Replace main power window and door lock/unlock
switch. Refer to EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
Rear Power Vent Window Switch Circuit InspectionINFOID:0000000003533056
1.CHECK REAR POWER VENT WINDOW SWITCH OPERATION
1. Turn ignition switch OFF.
2. Disconnect rear power vent window switch.
3. Check continuity between rear power vent window switch termi-
nals 1, 3 and 4.
OK or NG
OK >> GO TO 2.
NG >> Replace rear power vent window switch.
2.CHECK REAR POWER VENT WINDOW SWITCH CIRCUIT HARNESS CONTINUITY
Check continuity between rear power vent window switch connector
R103 terminal 1 and ground.
OK or NG
OK >> Rear power vent window switch circuit harness OK.
NG >> Repair or replace harness.
Rear Power Vent Window Motor LH Circuit InspectionINFOID:0000000003533057
1.CHECK REAR POWER VENT WINDOW LH SIGNAL14 - 1 : Continuity should exist.
LIIA1390E
Te r m i n a l
Condition Continuity
(+) (-)
31Rear power vent window switch
is pressed OPEN.Ye s
41Rear power vent window switch
is pressed CLOSE.Ye s
LIIA0956E
1 - Ground : Continuity should exist.
LIIA2045E

GW-56
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor LH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor LH con-
nector B52 terminals 1, 2 and ground.
OK or NG
OK >> Replace rear power vent window motor LH. Refer to GW-65, "Removal and Installation".
NG >> Repair or replace harness.
Rear Power Vent Window Motor RH Circuit InspectionINFOID:0000000003533058
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 con-
nector B150 terminals 1, 2 and ground.
OK or NG
OK >> Replace rear power vent window motor RH. Refer to GW-65, "Removal and Installation".
NG >> Repair or replace harness.
Rear Power Vent Window Relay (OPEN) CheckINFOID:0000000003533059
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)
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
B521
GroundOpening Battery voltage
Closing 0
2Opening 0
Closing Battery voltage
LIIA0621E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
B1501
GroundOpening Battery voltage
Closing 0
2Opening 0
Closing Battery voltage
LIIA0621E
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M871
Ground Battery voltage
5
LIIA1565E

POWER WINDOW SYSTEM
GW-57
< SERVICE INFORMATION >
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Check continuity between rear power vent window relay (OPEN) ter-
minals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace rear power vent window relay (OPEN).
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) CheckINFOID:0000000003533060
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.
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 - Ground : Continuity should exist.
LIIA1567E
2 - 3 : Continuity should exist.
LIIA1568E
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M891
Ground Battery voltage
5
LIIA1565E

GW-58
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
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 - Ground : Continuity should exist.
LIIA1567E
2 - 4 : Continuity should exist.
LIIA1569E

FRONT DOOR GLASS AND REGULATOR
GW-59
< SERVICE INFORMATION >
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FRONT DOOR GLASS AND REGULATOR
Removal and InstallationINFOID:0000000003533061
FRONT DOOR GLASS
Removal
1. Remove the front door speaker. Refer to AV-46, "Removal and Installation".
2. Remove the hole cover over rear glass bolt.
3. Temporarily reconnect the power window switch.
4. Operate the power window switch to raise/lower the door window until the glass bolts can be seen.
5. Partially remove the inside seal.
6. Remove the glass bolts.
7. While holding the front door glass, raise it at the rear end and
pull the glass out of the sash toward the outside of the door.
Installation
Installation is in the reverse order of removal.
1. Door glass run 2. Door glass 3. front door glass regulator assembly
WIIA0941E
LIIA1687E
Glass bolts : 6.1 N·m (0.62 kg-m, 54 in-lb)

GW-60
< SERVICE INFORMATION >
FRONT DOOR GLASS AND REGULATOR
Fitting Inspection
• Check that the glass is securely fit into the glass run groove.
• Lower the glass slightly [approximately 10 to 20 mm (0.39 to 0.79 in)] and check that the clearance to the
sash is parallel. If the clearance between the glass and sash is not parallel, loosen the regulator bolts, guide
rail bolts, and glass and guide rail bolts to correct the glass position.
FRONT DOOR GLASS REGULATOR
Removal
1. Remove the front door speaker. Refer to AV-46, "Removal and Installation".
2. Remove the hole cover over rear glass bolt.
3. Temporarily reconnect the power window switch.
4. Operate the power window main switch to raise/lower the door window until the glass bolts can be seen.
5. Partially remove the inside seal.
6. Remove the glass bolts.
7. Raise the front door glass and hold it in place with suitable tool.
8. Disconnect the harness connector from the regulator assembly.
9. Remove the bolts and the regulator assembly.
Disassembly And Assembly
Remove the regulator motor from the regulator assembly.
Inspection After Removal
Check the regulator assembly for the following items. If a malfunc-
tion is detected, replace or grease it.
• Wire wear
• Regulator deformation
• Grease condition for each sliding part
The arrows in the figure show the application points of the body
grease.
Installation
1. Install the regulator assembly.
2. Connect the harness connector to the regulator assembly.
3. Align the glass and install the glass bolts.
4. Reset the limit switch.
5. Install front door speaker. Refer to AV-46, "
Removal and Installation".
SETTING AFTER INSTALLATION
Setting of Limit Switch
If any of the following work has been done, set the limit switch (integrated in the motor).
• Removal and installation of the regulator.
• Removal and installation of the motor from the regulator.
• Removal and installation of the glass.
• Removal and installation of the glass run.
Resetting
After installing each component, perform the following procedure to reset the limit switch.
LIIA0670E
Glass bolts : 6.1 N·m (0.62 kg-m, 54 in-lb)