Nissan Murano Z51. Manual - part 1495

WCS

DIAGNOSIS SYSTEM (BCM)

WCS-21

< SYSTEM DESCRIPTION >

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ACTIVE TEST

Display item

[Unit]

Description

PUSH SW
[On/Off]

Status of push button ignition switch judged by BCM.

UNLK SEN-DR
[On/Off]

Status of unlock sensor judged by BCM.

VEH SPEED 1
[Km/h]

Value of vehicle speed signal received from ABS actuator and electric unit (control unit) with CAN 
communication line.

KEY SW-SLOT
[On/Off]

Status of key slot judged by BCM.

TAIL LAMP SW
[On/Off]

Status of each switch judged by BCM using the combination switch readout function.

FR FOG SW
[On/Off]

Status of front fog lamp switch judged by BCM.

DOOR SW-DR
[On/Off]

Status of driver side door switch judged by BCM.

Display item

[Unit]

Description

IGN KEY WARN ALM

The key warning chime operation can be checked by operating the relevant function (On/Off).

SEAT BELT WARN TEST

The seat belt warning chime operation can be checked by operating the relevant function (On/Off).

ID REGIST WARNING

The ID regist warning chime operation can be checked by operating the relevant function (On/Off).

LIGHT WARN ALM

The light warning chime operation can be checked by operating the relevant function (On/Off).

WCS-22

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000005688795

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between combination meter harness connector terminals and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between combination meter and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Check continuity between combination meter harness connector terminals and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

BCM (BODY CONTROL MODULE)

BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000005688797

1.

CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Power source

Fuse No.

Battery

11

Ignition switch ON or START 

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Terminals

Ignition switch po-

sition

Voltage

(Approx.)

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

1

OFF

Battery voltage

2

ON

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

3

Existed

23

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-23

< DTC/CIRCUIT DIAGNOSIS >

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Is the fuse fusing?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is

blown.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connectors.

3.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Signal name

Fuse and fusible link No.

Battery power supply

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Terminals

Voltage

(Approx.)

(+)

(

−

)

BCM

Ground

Connector

Terminal

M118

1

Battery voltage

M119

11

BCM

Ground

Continuity

Connector

Terminal

M119

13

Existed

WCS-24

< DTC/CIRCUIT DIAGNOSIS >

METER BUZZER CIRCUIT

METER BUZZER CIRCUIT

Description

INFOID:0000000005524990

• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units.

Component Function Check

INFOID:0000000005524991

1.

CHECK OPERATION OF METER BUZZER

1.

Select “BUZZER” of “BCM” on CONSULT-III.

2.

Perform “LIGHT WARN ALM” of “Active Test”.

Does meter buzzer beep?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK COMBINATION METER INPUT SIGNAL

Select the “Data Monitor” for the “METER/M&A” and check the “BUZZER” monitor value.

Is the inspection result normal?

YES

>> Replace combination meter.

NO

>> Replace BCM. Refer to 

BCS-95, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000005524992

1.

CHECK POWER SUPPLY OF COMBINATION METER

Check power supply of combination meter. Refer to 

MWI-43, "COMBINATION METER : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair power supply circuit of combination meter. Refer to 

MWI-43, "COMBINATION METER :

Diagnosis Procedure"

.

BUZZER

Under the condition of buzzer input

: On

Except above

: Off