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 >

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PWC

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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-

tion"

. 

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-

tion"

. 

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-

tion"

. 

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