ignition INFINITI QX56 2007 Factory Service Manual

POWER WINDOW SYSTEM
GW-41
< SERVICE INFORMATION >
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1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between front power window motor LH connec-
tor 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. Refer to EI-31, "
Removal and Installation" .
NG >> Repair or replace harness.
5.CHECK ENCODER SIGNAL
1. Connect front power window motor LH.
2. Turn ignition switch ON.
3. Check the signal between main power window and door lock/
unlock switch connector and ground with oscilloscope.
OK or NG
OK >> Replace main power window and door lock/unlock switch. Refer to EI-31, "Removal and Installa-
tion".
NG >> GO TO 6.
6.CHECK ENCODER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front power window motor LH and main power win-
dow and door lock/unlock switch.
3. Check continuity between front power window motor LH connec-
tor D9 (B) terminal 3 and main power window and door lock/
unlock switch connector D7 (A) terminal 13.
OK or NG
OK >> Replace front power window motor LH. Refer to GW-59.
NG >> Repair or replace harness.
Encoder Circuit Inspection Front RHINFOID:0000000003533045
1.CHECK POWER WINDOW MOTOR RH POWER SUPPLY6 - 2 : Continuity should exist.
LIIA0924E
Connec-
torTe r m i n a l s
Condition Signal
(+) (-)
D7 13 Ground Opening
LIIA0364E
OCC3383D
3 - 13 : Continuity should exist.
LIIA2210E

GW-42
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
1. Turn ignition switch OFF.
2. Disconnect front power window motor RH.
3. Turn ignition switch ON.
4. Check voltage between front power window motor RH connector
D104 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 power window and door lock/unlock switch RH.
3. Check continuity between front power window motor RH con-
nector D104 terminal 4 and power window and door lock/unlock
switch RH connector D105 terminal 4.
OK or NG
OK >> Replace power window and door lock/unlock switch RH.
Refer to EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
3.CHECK ENCODER GROUND
1. Turn ignition switch OFF.
2. Check continuity between front power window motor RH con-
nector D104 terminal 6 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK ENCODER GROUND CIRCUIT
1. Disconnect power window and door lock/unlock switch RH.
2. Check continuity between front power window motor RH con-
nector 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.
Refer to EI-31, "
Removal and Installation".
NG >> Repair or replace harness.
5.CHECK ENCODER SIGNAL4 - Ground : Approx. 10V
WIIA0513E
4 - 4 : Continuity should exist.
LIIA1266E
6 - Ground : Continuity should exist.
LIIA0923E
6 - 3 : Continuity should exist.
LIIA1264E

POWER WINDOW SYSTEM
GW-43
< SERVICE INFORMATION >
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1. Connect front power window motor RH.
2. Turn ignition switch ON.
3. Check the signal between power window and door lock/unlock
switch RH connector and ground with oscilloscope.
OK or NG
OK >> Replace power window and door lock/unlock switch RH. Refer to EI-31, "Removal and Installa-
tion".
NG >> GO TO 6.
6.CHECK ENCODER 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 front power window motor RH con-
nector D104 terminal 3 and power window and door lock/unlock
switch RH connector D105 terminal 12.
OK or NG
OK >> Replace front power window motor RH. Refer to GW-59.
NG >> Repair or replace harness.
Door Switch CheckINFOID:0000000003533046
1.CHECK FRONT DOOR SWITCH INPUT SIGNAL
With CONSULT-II
Check front door switches (“DOOR SW-DR” and “DOOR SW-AS” )
in “DATA MONITOR” mode with CONSULT-II. Refer to GW-31,
"CONSULT-II Function (BCM)".
Without CONSULT-II
Connec-
torTe r m i n a l s
Condition Signal
(+) (-)
D105 12 Ground Opening
LIIA1267E
OCC3383D
3 - 12 : Continuity should exist.
LIIA1268E
Monitor item Condition
DOOR SW-DROPEN: ON
CLOSE: OFF
DOOR SW-ASOPEN: ON
CLOSE: OFF
PIIA2464E

GW-44
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
Check voltage between BCM connector and ground.
OK or NG
OK >> Front door switch is OK.
NG >> GO TO 2.
2.CHECK FRONT DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front door switch LH or RH and BCM.
3. Check continuity between front door switch connector B8 (LH)
or B108 (RH) terminal 2 and BCM connector M19 terminal 47
(LH) or connector M18 terminal 12 (LH).
4. Check continuity between front door switch connector B8 (LH)
or B108 (RH) terminal 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR SWITCH
Check continuity between each front door switch terminal 2 and
body ground part of front door switch.
OK or NG
OK >> Replace BCM. Refer to BCS-24, "BCM".
NG >> Replace malfunctioning front door switch.
Front Door Lock Assembly LH (Key Cylinder Switch) CheckINFOID:0000000003533047
1.CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) INPUT SIGNAL
With CONSULT-II
Item ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
Front RH M18 12
GroundOPEN 0
CLOSE Battery voltage
Front LH M19 47OPEN 0
CLOSE Battery voltage
LIIA0946E
Front LH
2 - 47 : Continuity should exist.
Front RH
2 - 12 : Continuity should exist.
2 - Ground : Continuity should not exist.
LIIA0947E
Terminal Door switch Continuity
2Body ground part
of front door
switchPushed No
Released Yes
LIIA2377E

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