Infiniti QX56 (Z62). Manual — part 1033
PWC-44
< DTC/CIRCUIT DIAGNOSIS >
ENCODER
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK ENCORDER POWER SUPPLY
1.
Connect power window main switch connector.
2.
Turn ignition switch ON.
3.
Check voltage between front power window motor (driver side) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK ENCORDER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect power window main switch connector.
3.
Check continuity between power window main switch harness connector and front power window motor
(driver side) harness connector.
4.
Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
YES
>> Replace power window main switch. Refer to
PWC-74, "Removal and Installation"
NO
>> Repair or replace harness.
5.
CHECK GROUND CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Check continuity between front power window motor (driver side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace front power window motor (driver side). Refer to
GW-21, "Removal and Installation"
.
NO
>> GO TO 6.
6.
CHECK GROUND CIRCUIT 2
1.
Disconnect power window main switch connector.
Power window main switch
Ground
Continuity
Connector
Terminal
D5
9
Not existed
13
(+)
(–)
Voltage (V)
(Approx.)
Front power window motor (driver side)
Connector
Terminal
D7
2
Ground
12
Power window main switch
Front power window motor (driver side)
Continuity
Connector
Terminal
Connector
Terminal
D5
15
D7
2
Existed
Power window main switch
Ground
Continuity
Connector
Terminal
D5
15
Not existed
Front power window motor (driver side)
Ground
Continuity
Connector
Terminal
D7
4
Existed
ENCODER
PWC-45
< DTC/CIRCUIT DIAGNOSIS >
C
D
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F
G
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M
A
B
PWC
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P
2.
Check continuity between power window main switch harness connector and front power window motor
(driver side) harness connector.
3.
Check continuity between power window main switch harness connector and ground.
Is the inspection result normal?
YES
>> Replace power window main switch. Refer to
PWC-74, "Removal and Installation"
NO
>> Repair or replace harness.
PASSENGER SIDE
PASSENGER SIDE : Component Function Check
INFOID:0000000006217303
1.
CHECK ENCODER
Check that passenger side door glass performs AUTO open/close operation normally by power window main
switch or front power window switch (passenger side).
Is the inspection result normal?
YES
>> Encoder is OK.
NO
>> Refer to
PWC-45, "PASSENGER SIDE : Diagnosis Procedure"
.
PASSENGER SIDE : Diagnosis Procedure
INFOID:0000000006217304
1.
CHECK ENCODER SIGNAL
1.
Turn ignition switch ON.
2.
Check signal between front power window switch (passenger side) harness connector and ground with
oscilloscope.
Is the inspection result normal?
YES
>> Replace front power window switch (passenger side). Refer to
PWC-74, "Removal and Installa-
.
NO
>> GO TO 2.
2.
CHECK ENCORDER SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
Power window main switch
Front power window motor (driver side)
Continuity
Connector
Terminal
Connector
Terminal
D5
2
D7
4
Existed
Power window main switch
Ground
Continuity
Connector
Terminal
D5
2
Not existed
Signal name
(+)
(–)
Signal
(Reference value)
Front power window switch (passenger side)
Connector
Terminal
Encoder signal 1
D25
12
Ground
Refer to following signal
Encoder signal 2
15
JMKIA5210GB
PWC-46
< DTC/CIRCUIT DIAGNOSIS >
ENCODER
2.
Disconnect front power window switch (passenger side) connector and front power window motor (pas-
senger side) connector.
3.
Check continuity between front power window switch (passenger side) harness connector and front power
window motor (passenger side) harness connector.
4.
Check continuity between front power window switch (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK ENCORDER POWER SUPPLY
1.
Connect front power window switch (passenger side) connector.
2.
Turn ignition switch ON.
3.
Check voltage between front power window motor (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK ENCORDER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front power window switch (passenger side) connector.
3.
Check continuity between front power window switch (passenger side) harness connector and front power
window motor (passenger side) harness connector.
4.
Check continuity between front power window switch (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace front power window switch (passenger side). Refer to
PWC-74, "Removal and Installa-
.
NO
>> Repair or replace harness.
5.
CHECK GROUND CIRCUIT 1
1.
Turn ignition switch OFF.
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
12
D27
5
Existed
15
6
Front power window switch (passenger side)
Ground
Continuity
Connector
Terminal
D25
12
Not existed
15
(+)
(–)
Voltage (V)
(Approx.)
Front power window motor (passenger side)
Connector
Terminal
D27
2
Ground
12
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
4
D27
2
Existed
Front power window switch (passenger side)
Ground
Continuity
Connector
Terminal
D25
4
Not existed
ENCODER
PWC-47
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
PWC
N
O
P
2.
Check continuity between front power window motor (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace front power window motor (passenger side). Refer to
GW-21, "Removal and Installation"
.
NO
>> GO TO 6.
6.
CHECK GROUND CIRCUIT 2
1.
Disconnect front power window switch (passenger side) connector.
2.
Check continuity between front power window switch (passenger side) harness connector and front power
window motor (passenger side) harness connector.
3.
Check continuity between front power window switch (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace front power window switch (passenger side). Refer to
PWC-74, "Removal and Installa-
.
NO
>> Repair or replace harness.
REAR LH
REAR LH : Component Function Check
INFOID:0000000006217305
1.
CHECK ENCODER OPERATION
Check that rear door LH glass performs AUTO open/close operation normally by power window main switch or
rear power window switch LH.
Is the inspection result normal?
YES
>> Encoder operation is OK.
NO
>> Refer to
PWC-47, "REAR LH : Diagnosis Procedure"
.
REAR LH : Diagnosis Procedure
INFOID:0000000006217306
1.
CHECK ENCODER SIGNAL
1.
Turn ignition switch ON.
2.
Check signal between rear power window switch LH harness connector and ground with oscilloscope.
Front power window motor (passenger side)
Ground
Continuity
Connector
Terminal
D27
4
Existed
Front power window switch (passenger side)
Front power window motor (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
D25
3
D27
4
Existed
Front power window switch (passenger side)
Ground
Continuity
Connector
Terminal
D25
3
Not existed
Signal name
(+)
(–)
Signal
(Reference value)
Rear power window switch LH
Connector
Terminal
Encoder signal 1
D63
12
Ground
Refer to following signal
Encoder signal 2
15
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