Infiniti QX56 (JA60). Manual - part 226

DOOR LOCK AND UNLOCK SWITCH

DLK-75

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the inspection result normal?

YES

>> Door lock and unlock switch circuit is OK.

NO

>> GO TO 2

2.

CHECK BCM OUTPUT SIGNAL

1. Turn ignition switch OFF.

2. Using the vehicle operational Intelligent Key, press and hold the UNLOCK button for more than 3 sec-

onds.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

3.

CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS

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

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

unlock switch connector D8 terminal 17 and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

1. Disconnect BCM.

2. Check continuity between BCM connector M18 terminal 22 and main power window and door lock/unlock

switch connector D7 terminal 14.

Connector

Terminal

Voltage (V)

( + )

( – )

M18

22

Ground

PIIA6379E

PIIA1297E

The front windows should be lowered.

17 - Ground

: Continuity should exist.

LIIA0392E

DLK-76

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

DOOR LOCK AND UNLOCK SWITCH

3. Check continuity between BCM connector M18 terminal 22 and ground.

Is the inspection result normal?

YES

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

NO

>> Repair or replace harness.

PASSENGER SIDE
PASSENGER SIDE : Description

INFOID:0000000005146932

Transmits door lock/unlock operation to BCM.

PASSENGER SIDE : Component Function Check

INFOID:0000000005146933

1.

CHECK FUNCTION

With CONSULT-III

Check CDL LOCK SW, CDL UNLOCK SW in Data Monitor mode with CONSULT-III.

Is the inspection result normal?

YES

>> Door lock and unlock switch is OK.

NO

>> Refer to 

DLK-76, "PASSENGER SIDE : Diagnosis Procedure"

.

PASSENGER SIDE : Diagnosis Procedure

INFOID:0000000005146934

Regarding Wiring Diagram information, refer to 

DLK-157, "Wiring Diagram — POWER DOOR LOCK SYS-

TEM —"

.

22 - 14

: Continuity should exist.

LIIA0394E

22 - Ground

: Continuity should not exist.

LIIA2359E

Monitor item

Condition

CDL LOCK SW 

LOCK

: ON

UNLOCK

: OFF

CDL UNLOCK SW 

LOCK

: OFF

UNLOCK

: ON

DOOR LOCK AND UNLOCK SWITCH

DLK-77

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

1.

CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL

With CONSULT-III

Check power window and door lock/unlock switch RH ("CDL LOCK SW", "CDL UNLOCK SW") in DATA MON-

ITOR mode in CONSULT–III.

• When power window and door lock/unlock switch RH is turned to LOCK:

• When power window and door lock/unlock switch RH is turned to UNLOCK:

Without CONSULT-III

1. Remove key from ignition key cylinder.

2. Using an oscilloscope, check the signal between BCM connector M18 terminal 22 and ground when

power window and door lock/unlock switch RH is turned to LOCK or UNLOCK.

3. Make sure the signals which are shown in the figure below can be detected during 10 seconds just after

the power window and door lock/unlock switch RH is turned to LOCK or UNLOCK.

Is the inspection normal?

YES

>> Power window and door lock/unlock switch RH circuit is OK.

NO

>> GO TO 2

2.

CHECK BCM OUTPUT SIGNAL

1. Turn ignition switch OFF.

2. Using the vehicle operational Intelligent Key, press and hold the UNLOCK button for more than 3 sec-

onds.

Is the inspection normal?

YES

>> GO TO 3

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

.

3.

CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS

1. Disconnect power window and door lock/unlock switch RH.

CDL LOCK SW

:ON

CDL UNLOCK SW

:ON

Connector

Terminal

Voltage (V)

( + )

( – )

M18

22

Ground

PIIA6379E

PIIA1297E

The front windows should be lowered.

DLK-78

< COMPONENT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

DOOR LOCK AND UNLOCK SWITCH

2. Check continuity between power window and door lock/unlock

switch RH connector D105 terminal 11 and ground

Is the inspection normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK POWER WINDOW SERIAL LINK CIRCUIT

1. Disconnect BCM.

2. Check continuity between BCM connector M18 terminal 22 and power window and door lock/unlock

switch RH connector D105 terminal 16.

3. Check continuity between BCM connector M18 terminal 22 and ground.

Is the inspection normal?

YES

>> Replace power window and door lock/unlock switch RH.

NO

>> Repair or replace harness.

11 - Ground

: Continuity should exist.

LIIA1140E

22 - 16

: Continuity should exist.

LIIA0395E

22 - ground

: Continuity should not exist.

LIIA2359E