Infiniti QX56 (JA60). Manual - part 757

PWC-40

< COMPONENT DIAGNOSIS >

POWER WINDOW SERIAL LINK

Is the inspection result normal?

YES

>> Power window serial link is OK.

NO

>> GO TO 2

2.

 CHECK POWER WINDOW SERIAL LINK CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM and main power window and door lock/unlock

switch.

3. Check continuity between BCM connector and main power win-

dow and door lock/unlock switch connector.

4. Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> Replace main power window and door lock/unlock switch. Refer to 

PWC-117, "Removal and

Installation"

.

NO

>> Repair or replace harness.

FRONT POWER WINDOW SWITCH
FRONT POWER WINDOW SWITCH : Description

INFOID:0000000005147220

Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM

transmit and receive the signal by power window serial link.

The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and

power window and door lock/unlock switch RH

• Keyless power window down signal

The signal mentioned below is transmitted from main power window and door lock/unlock switch to power win-

dow and door lock/unlock switch RH

• Front door window RH operation signal

• Power window control by key cylinder switch signal

• Retained power operation signal 

• Power window lock switch signal

FRONT POWER WINDOW SWITCH : Component Function Check

INFOID:0000000005147221

1.

 CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH OUTPUT SIGNAL

Terminal

Signal

(Reference value)

(+)

(–)

BCM connector

Terminal 

M18

22

Ground

PIIA1297E

BCM connector

Terminal

Main power window and door 

lock/unlock switch connector

Terminal

Continuity

M18 (A)

22

D7 (B)

14

Yes

ALKIA1026ZZ

BCM connector

Terminal

Ground

Continuity 

M18 (A)

22

No

POWER WINDOW SERIAL LINK

PWC-41

< COMPONENT DIAGNOSIS >

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PWC

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Check (“CDL LOCK SW ”, “CDL UNLOCK SW”) in “DATA MONITOR” mode for “POWER DOOR LOCK SYS-

TEM” with CONSULT-III. Refer to 

BCS-17, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

.

Is the inspection result normal?

YES

>> Power window serial link is OK.

NO

>> Refer to 

PWC-41, "FRONT POWER WINDOW SWITCH : Diagnosis Procedure"

.

FRONT POWER WINDOW SWITCH : Diagnosis Procedure

INFOID:0000000005147222

Regarding Wiring Diagram information, refer to 

PWC-68, "Wiring Diagram"

.

1.

 CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH

1. Remove Intelligent Key or ignition key, and close the front door

LH and RH.

2. Check signal between BCM connector and ground with oscillo-

scope when door lock and unlock switch (LH and RH) is turned

to “LOCK” or “UNLOCK”.

3. Check that signals which are shown in the figure below can be

detected during 10 second just after door lock and unlock switch

(LH and RH) is turned to “LOCK” or “UNLOCK”.

Is the inspection result normal?

YES

>> Power window serial link is OK.

NO

>> GO TO 2

2.

 CHECK POWER WINDOW SERIAL LINK CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check continuity between BCM connector and power window

and door lock/unlock switch RH connector.

Monitor item

Condition

CDL LOCK SW 

LOCK

: ON

UNLOCK

: OFF

CDL UNLOCK SW 

LOCK

: OFF

UNLOCK

: ON

Terminal

Signal

(Reference value)

(+)

(–)

BCM connector

Terminal 

M18

2

Ground

LIIA0391E

PIIA1297E

BCM connector

Terminal

Power window and door 

lock/unlock switch RH con-

nector

Terminal

Continuity

M18 (A)

22

D105 (B)

16

Yes

ALKIA1027ZZ

PWC-42

< COMPONENT DIAGNOSIS >

POWER WINDOW SERIAL LINK

4. Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> Replace main power window and door lock/unlock switch. Refer to 

PWC-117, "Removal and

Installation"

.

NO

>> Repair or replace harness.

REAR POWER WINDOW SWITCH
REAR POWER WINDOW SWITCH : Power Window Serial Link Check Rear LH or RH

INFOID:0000000005147223

Regarding Wiring Diagram information, refer to 

PWC-53, "Wiring Diagram"

.

1.

 CHECK REAR POWER WINDOW CONTROL UNIT LH OR RH

1. Replace with operative rear power window control unit LH or RH.

2. Does window operate normally?
Is the inspection result normal?

YES

>> Replace rear power window control unit LH or RH.

NO

>> GO TO 2

2.

 CHECK POWER WINDOW SERIAL LINK CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect main power window and door lock/unlock switch and

rear power window control unit LH or RH.

3. Check continuity between main power window and door lock/

unlock switch connector D7 terminal 14 and rear power window

control unit LH or RH connector D209 (LH) or D309 (RH) termi-

nal 1.

Is the inspection result normal?

YES

>> Replace main power window and door lock/unlock

switch. Refer to 

PWC-117, "Removal and Installation"

.

NO

>> Repair or replace harness.

BCM connector

Terminal

Ground

Continuity 

M18 (A)

22

No

14 - 1

: Continuity should exist.

LIIA1390E

POWER WINDOW LOCK SWITCH

PWC-43

< COMPONENT DIAGNOSIS >

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POWER WINDOW LOCK SWITCH

Description

INFOID:0000000005147224

Ground circuit of main power window and door lock/unlock switch shuts off if power window lock switch of

main power window and door lock/unlock switch is operated. This inhibits all operation, except for the main

switch.

Component Function Check

INFOID:0000000005147225

1.

 CHECK POWER WINDOW LOCK SIGNAL

Exchanges for a normal main power window and door lock/unlock switch, and operation is checked.
Does power window lock operate?

YES

>> Replace main power window and door lock/unlock switch. Refer to 

PWC-117, "Removal and

Installation"

.

NO

>> Check condition of harness and connector.