Infiniti QX56 (JA60). Manual - part 754

PWC-28

< COMPONENT DIAGNOSIS >

ENCODER

Is the inspection result normal?

YES

>> Replace front power window motor RH. Refer to 

GW-15, "Removal and Installation"

.

NO

>> Repair or replace harness.

REAR LH
REAR LH : Description

INFOID:0000000005147203

Detects condition of the front power window motor LH operation and transmits to main power window and door

lock/unlock switch as pulse signal. 

REAR LH : Component Function Check

INFOID:0000000005147204

1.

 CHECK ENCODER OPERATION

Does front door glass LH perform AUTO open/close operation normally when operating main power window

and door lock/unlock switch?
Is the inspection result normal?

YES

>> Encoder operation is OK.

NO

>> Refer to 

PWC-31, "REAR RH : Diagnosis Procedure"

.

REAR LH : Diagnosis Procedure

INFOID:0000000005147205

Regarding Wiring Diagram information, refer to 

PWC-53, "Wiring Diagram"

.

1.

 CHECK ENCODER SIGNAL

1. Turn ignition switch ON.

2. Check the signal between rear power window control unit LH

connector D209 terminal 4 and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Replace rear power window control unit LH.

2.

 CHECK HARNESS CONTINUITY

Power window and door 

lock/unlock switch RH con-

nector

Terminal

Ground

Continuity

D105 (A)

12

No

15

Connec-

tor

Terminals

Condition

Signal

(+)

(-)

D209

4

Ground

Opening

LIIA2368E

OCC3383D

ENCODER

PWC-29

< COMPONENT DIAGNOSIS >

C

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B

PWC

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1. Turn ignition switch OFF.

2. Disconnect rear power window control unit LH and rear power

window motor LH.

3. Check continuity between rear power window control unit LH or

RH connector D209 terminal 4 and rear power window motor LH

connector D204 terminal 3.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK REAR POWER WINDOW MOTOR LH 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 connector

D204 terminal 4 and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> GO TO 4

4.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect rear power window motor LH and rear power win-

dow control unit LH.

3. Check continuity between rear power window motor LH connec-

tor D204 (B) terminal 4 and rear power window control unit LH

connector D209 (A) terminal 5.

Is the inspection result normal?

YES

>> Replace rear power window switch LH. Refer to 

PWC-

119, "Removal and Installation"

.

NO

>> Repair or replace harness.

5.

 CHECK ENCODER GROUND

1. Disconnect rear power window motor LH.

2. Check continuity between rear power window motor LH connec-

tor D204 terminal 6 and ground.

Is the inspection result normal?

YES

>> GO TO 7

NO

>> GO TO 6

6.

 CHECK ENCODER GROUND CIRCUIT

4 - 3

: Continuity should exist.

LIIA1389E

4 - Ground

: Approx. 10V

LIIA0378E

4 - 5

: Continuity should exist.

LIIA2358E

6 - Ground

: Continuity should exist.

LIIA0380E

PWC-30

< COMPONENT DIAGNOSIS >

ENCODER

1. Disconnect rear power window control unit LH.

2. Check continuity between rear power window motor LH connec-

tor D204 terminal 6 and rear power window control unit LH con-

nector D209 terminal 3.

Is the inspection result normal?

YES

>> Replace rear power window control unit LH.

NO

>> Repair or replace harness.

7.

 CHECK REAR POWER WINDOW MOTOR LH LIMIT SWITCH SIGNAL

1. Turn ignition switch ON.

2. Check voltage between rear power window control unit LH con-

nector and ground.

Is the inspection result normal?

YES

>> Limit switch circuit is OK.

NO

>> GO TO 8

8.

 CHECK REAR POWER WINDOW SWITCH LH OUTPUT SIGNAL

1. Turn ignition switch ON.

2. Check voltage between rear power window control unit LH har-

ness connector D209 terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 9

NO

>> Replace rear power window control unit LH.

9.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect rear power window control unit LH.

3. Check continuity between rear power window control unit LH

connector D209 terminal 2 and rear power window motor LH

connector D204 terminal 5.

Is the inspection result normal?

YES

>> Replace rear power window motor LH. Refer to 

GW-18,

"Removal and Installation"

.

NO

>> Repair or replace harness.

REAR RH

6 - 3

: Continuity should exist.

LIIA1383E

Connector

Terminals

Condition 

Voltage (V)

(Approx.)

(+)

(-)

D209

3

Ground

Rear power window LH is be-
tween fully-open and just be-
fore fully-closed position (ON)

0

Rear power window LH is be-
tween just before fully-closed 
position and fully-closed posi-
tion (OFF)

5

LIIA2366E

2 - Ground

: Approx. 5V

LIIA2367E

2 - 5

: Continuity should exist.

LIIA1385E

ENCODER

PWC-31

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

PWC

N

O

P

REAR RH : Description

INFOID:0000000005147206

Detects condition of the front power window motor LH operation and transmits to main power window and door

lock/unlock switch as pulse signal. 

REAR RH : Component Function Check

INFOID:0000000005147207

1.

 CHECK ENCODER OPERATION

Does front door glass RH perform AUTO open/close operation normally when operating main power window

and door lock/unlock switch?
Is the inspection result normal?

YES

>> Encoder operation is OK.

NO

>> Refer to 

PWC-31, "REAR RH : Diagnosis Procedure"

.

REAR RH : Diagnosis Procedure

INFOID:0000000005147208

Regarding Wiring Diagram information, refer to 

PWC-53, "Wiring Diagram"

.

1.

 CHECK ENCODER SIGNAL

1. Turn ignition switch ON.

2. Check the signal between rear power window control unit RH

connector D309 terminal 4 and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Replace rear power window control unit RH.

2.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect rear power window control unit RH and rear power

window motor RH.

3. Check continuity between rear power window control unit RH

connector D309 terminal 4 and rear power window motor RH

connector D304 terminal 3.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK REAR POWER WINDOW MOTOR RH POWER SUPPLY

Connec-

tor

Terminals

Condition

Signal

(+)

(-)

D309

4

Ground

Opening

LIIA2368E

OCC3383D

4 - 3

: Continuity should exist.

LIIA1389E