Infiniti QX56 (JA60). Manual - part 755

PWC-32

< COMPONENT DIAGNOSIS >

ENCODER

1. Turn ignition switch OFF.

2. Disconnect rear power window motor RH.

3. Turn ignition switch ON.

4. Check voltage between rear power window motor RH connector

D304 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 RH and rear power win-

dow control unit RH.

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

tor D304 (B) terminal 4 and rear power window control unit RH

connector D309 (A) terminal 5.

Is the inspection result normal?

YES

>> Replace rear power window switch RH. Refer to 

PWC-

119, "Removal and Installation"

.

NO

>> Repair or replace harness.

5.

 CHECK ENCODER GROUND

1. Disconnect rear power window motor RH.

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

tor D304 terminal 6 and ground.

Is the inspection result normal?

YES

>> GO TO 7

NO

>> GO TO 6

6.

 CHECK ENCODER GROUND CIRCUIT

1. Disconnect rear power window control unit RH.

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

tor D304 terminal 6 and rear power window control unit RH con-

nector D309 terminal 3.

Is the inspection result normal?

YES

>> Replace rear power window control unit RH.

NO

>> Repair or replace harness.

7.

 CHECK REAR POWER WINDOW MOTOR RH LIMIT SWITCH SIGNAL

4 - Ground

: Approx. 10V

LIIA0378E

4 - 5

: Continuity should exist.

LIIA2358E

6 - Ground

: Continuity should exist.

LIIA0380E

6 - 3

: Continuity should exist.

LIIA1383E

ENCODER

PWC-33

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

PWC

N

O

P

1. Turn ignition switch ON.

2. Check voltage between rear power window control unit RH 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 RH OUTPUT SIGNAL

1. Turn ignition switch ON.

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

ness connector D309 terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 9

NO

>> Replace rear power window control unit RH.

9.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect rear power window control unit RH.

3. Check continuity between rear power window control unit RH

connector D309 terminal 2 and rear power window motor RH

connector D304 terminal 5.

Is the inspection result normal?

YES

>> Replace rear power window motor RH. Refer to 

GW-18,

"Removal and Installation"

.

NO

>> Repair or replace harness.

Connector

Terminals

Condition 

Voltage (V)

(Approx.)

(+)

(-)

D209

3

Ground

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

0

Rear power window RH 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

PWC-34

< COMPONENT DIAGNOSIS >

DOOR SWITCH

DOOR SWITCH

Description

INFOID:0000000005147209

Detects door open/close condition and transmits the signal to BCM.

Component Function Check

INFOID:0000000005147210

1.

 CHECK FRONT DOOR SWITCH INPUT SIGNAL

Check (“DOOR SW-DR” and “DOOR SW-AS”) in “DATA MONITOR” mode with CONSULT-III. Refer to 

BCS-

27, "RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)"

.

Is the inspection result normal?

YES

>> Front door switch circuit is OK.

NO

>> Refer to 

PWC-34, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147211

Regarding Wiring Diagram information, refer to 

PWC-53, "Wiring Diagram"

.

1.

 CHECK FRONT DOOR SWITCH

Check voltage between BCM connector and ground.

Is the measurement value within the specification?

YES

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

NO

>> GO TO 2

2.

 CHECK HARNESS CONTINUITY

Monitor item

Condition

DOOR SW-DR

OPEN

: ON

CLOSE

: OFF

DOOR SW-AS

OPEN

: ON

CLOSE

: OFF

Terminals

Door condition

Voltage (V)

(Approx.)

(+)

(–)

BCM

 connector

Terminal 

M18

12

Ground

Front door 

RH

OPEN

0

CLOSE

Battery voltage

M19

47

Front door 

LH

OPEN

0

CLOSE

Battery voltage

LIIA0946E

DOOR SWITCH

PWC-35

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

PWC

N

O

P

1. Turn ignition switch OFF.

2. Disconnect BCM and front door switch.

3. Check continuity between BCM connector and front door switch

connector.

4. Check continuity between front door switch connector and

ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK BCM OUTPUT SIGNAL

1. Connect BCM connector.

2. Check voltage between BCM connector and ground.

Is the measurement value within the specification?

YES

>> GO TO 4

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

4.

 CHECK FRONT DOOR SWITCH

Check front door switch.

Refer to 

PWC-35, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace front door switch. 

Component Inspection

INFOID:0000000005147212

1.

 CHECK FRONT DOOR SWITCH

Check front door switches.

Is the inspection result normal?

YES

>> Front door switch is OK.

NO

>> Replace front door switch.

BCM connector

Terminal

Front door switch

 connector

Terminal

Continuity

M18

12

RH: B108

2

Yes

M19

47

LH: B8

Front door switch 

connector

Terminal

Ground

Continuity

B8 (LH)

2

No

B108 (RH)

LIIA0947E

Terminal

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal 

M18

12

Ground

Battery voltage

M19

47

LIIA0946E

Terminal

Door switch

Continuity

Door switches

2

Ground part of 

door switch

Pressed

No

Released

Yes

LIIA2377E