Infiniti QX56 (JA60). Manual - part 749

PWC-8

< FUNCTION DIAGNOSIS >

POWER WINDOW SYSTEM

Component Parts Location

INFOID:0000000005147167

Component Description

INFOID:0000000005147168

POWER WINDOW ANTI-PINCH SYSTEM

LIIA2715E

1.

A. Steering column
B. BCM M18, M19, M20 (view with 
instrument panel removed)

2.

A. Main power window and door 
lock/unlock switch D7, D8
Power window  and door lock/unlock 
switch RH D105
B. Front door switch LH B8, RH B108
C. Front power window motor LH D9, 
RH D104
D. Front door lock assembly LH (key 
cylinder switch) D14

3.

A. Rear power window switch LH 
D203, RH D303
Rear power window control unit LH 
D209, RH D309
B. Rear power window motor LH 
D204, RH D304

4.

A. Rear power vent window relay 
(CLOSE) M89
B. Rear power vent window relay 
(OPEN) M87

5.

Rear power vent window switch M95 6.

A. Rear power vent window motor 
LH B52, RH B150
B. Condenser-3 B119
Condenser-4 B120

Component

Function

BCM

• Supplies power supply to power window switch.
• Controls retained power.

Main power window and door lock/un-
lock switch

• Directly controls all power window motor of all doors.
• Controls anti-pinch operation of front power window LH.

Power window and door lock/unlock 
switch RH

• Controls front power window motor RH.
• Controls anti-pinch operation of front power window RH.

Rear power window switch 

• Controls rear power window control units LH and RH.

Rear power window control unit 

• Controls rear power window motors LH and RH.
• Controls anti-pinch operation of rear power window LH/RH.

POWER WINDOW SYSTEM

PWC-9

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Front power window motor LH

• Integrates the ENCODER POWER and WINDOW MOTOR.
• Starts operating with signals from main power window and door lock/unlock switch.
• Transmits power window motor rotation as a pulse signal to main power window and 

door lock/unlock switch.

Front power window motor RH

Starts operating with signals from main power window and door lock/unlock switch & 
power window and door lock/unlock switch RH.

Rear power window motor

Starts operating with signals from main power window and door lock/unlock switch & 
rear power window switch.

Front door lock assembly LH (key cylin-
der switch)

Transmits operation condition of key cylinder switch to power window main switch.

Front door switch LH or RH

Detects door open/close condition and transmits to BCM.

Component

Function

PWC-10

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000005369205

APPLICATION ITEM

CONSULT-III performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions for each system.

NOTE:

It can perform the diagnosis modes except the following for all sub system selection items.

RETAINED PWR

Diagnosis mode

Function Description

WORK SUPPORT

Changes the setting for each system function.

SELF-DIAG RESULTS

Displays the diagnosis results judged by BCM. Refer to 

BCS-54, "DTC Index"

.

CAN DIAG SUPPORT MNTR

Monitors the reception status of CAN communication viewed from BCM.

DATA MONITOR

The BCM input/output signals are displayed.

ACTIVE TEST

The signals used to activate each device are forcibly supplied from BCM.

ECU IDENTIFICATION

The BCM part number is displayed.

CONFIGURATION

• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.

System

Sub system selection item

Diagnosis mode

WORK SUPPORT

DATA MONITOR

ACTIVE TEST

BCM

BCM

×

Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

Air conditioner

AIR CONDITONER

×

Intelligent Key system

INTELLIGENT KEY

×

Combination switch

COMB SW

×

Immobilizer

IMMU

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Back door open

TRUNK

×

×

RAP (retained accessory power)

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS (tire pressure monitoring sys-
tem)

AIR PRESSURE MONITOR 

×

×

×

Vehicle security system

THEFT ALM

×

×

×

Panic alarm system

PANIC ALARM

×

DIAGNOSIS SYSTEM (BCM)

PWC-11

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RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)

INFOID:0000000005369878

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

Monitor Item

[Unit]

Description

IGN ON SW [ON/OFF]

Indicates condition of ignition switch.

DOOR SW-DR [ON/OFF]

Indicates condition of front door switch LH.

DOOR SW-AS [ON/OFF]

Indicates condition of front door switch RH.

Test Item

Description

RETAINED PWR

This test is able to supply RAP signal (power) from BCM (body control module) to power window 
system and power sunroof system (if equipped). Those systems can be operated when turning on 
“RETAINED PWR” on CONSULT-III screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-III can be operated with ignition switch in OFF position. “RETAINED 
PWR” should be turned “ON” or “OFF” on CONSULT-III screen when ignition switch is ON. Then 
turn ignition switch OFF to check retained power operation. CONSULT-III might be stuck if “RE-
TAINED PWR” is turned “ON” or “OFF” on CONSULT-III screen when ignition switch is OFF.

Work item

Description

RETAINED PWR SET

RAP signal’s power supply period can be changed by mode setting. Selects RAP signal’s power 
supply period between three steps
• MODE1 (45 sec.)/MODE2 (OFF)/MODE 3 (2 min.).