Nissan Sentra. Manual - part 922

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-25

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER
COMBINATION METER : Diagnosis Procedure

INFOID:0000000010289405

Regarding Wiring Diagram information, refer to 

MWI-28, "Wiring Diagram"

.

1.

CHECK FUSES

Check that the following fuses are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse after repairing the affected circuit.

NO

>> GO TO 2.

2.

POWER SUPPLY CIRCUIT CHECK

Check voltage between combination meter harness connector M24 terminals 15, 27, 28 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between combination meter harness connector M24 terminals 21, 22, 23 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connector.

BCM (BODY CONTROL SYSTEM) (WITH INTELLIGENT KEY SYSTEM)
BCM (BODY CONTROL SYSTEM) (WITH INTELLIGENT KEY SYSTEM) : Diagnosis 
Procedure

INFOID:0000000010309901

Unit

Power source

Fuse No.

Combination meter

Battery 8

Ignition switch ON or ACC 

18

Ignition switch ON or START 

3

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

START

Connector

Terminal

M24

27

Ground

Battery voltage

Battery voltage

Battery voltage

Battery voltage

15

0V

Battery voltage

Battery voltage

0V

28

0V

0V

Battery voltage

Battery voltage

Combination meter

Ground

Continuity

Connector

Terminal

M24

21

Yes

22

23

WCS-26

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

Regarding Wiring Diagram information, refer to 

BCS-51, "Wiring Diagram"

.

1.

CHECK FUSES AND FUSIBLE LINK

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

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Disconnect BCM connector M85.

2. Check voltage between BCM connector M85 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM connector M85 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

BCM (BODY CONTROL SYSTEM) (WITHOUT INTELLIGENT KEY SYSTEM)
BCM (BODY CONTROL SYSTEM) (WITHOUT INTELLIGENT KEY SYSTEM) : Diag-
nosis Procedure

INFOID:0000000010289407

Regarding Wiring Diagram information, refer to 

BCS-111, "Wiring Diagram"

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1.

CHECK FUSES AND FUSIBLE LINK

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

Is the fuse blown?

Terminal No.

Signal name

Fuses and fusible link No.

88

Battery power supply

12 (10A)

90

G (40A)

BCM

Ground

Voltage

Connector

Terminal

M85

88

—

Battery voltage

90

BCM

Ground

Continuity

Connector

Terminal

M85

93

—

Yes

Terminal No.

Signal name

Fuses and fusible link No.

63

Battery power supply

12 (10A)

70

G (40A)

11

Ignition switch ACC or ON

18 (10A)

WCS

POWER SUPPLY AND GROUND CIRCUIT

WCS-27

< DTC/CIRCUIT DIAGNOSIS >

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YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connectors.

3. Check voltage between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

BCM

Ground

Ignition switch position

Connector

Terminal

OFF

ACC

ON

M20

63

Battery voltage

Battery voltage

Battery voltage

70

M21

11

—

0 V

Battery voltage

Battery voltage

BCM

Ground

Continuity

Connector

Terminal

M20

65

—

Yes

WCS-28

< DTC/CIRCUIT DIAGNOSIS >

METER BUZZER CIRCUIT

METER BUZZER CIRCUIT

Description

INFOID:0000000009759244

• 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:0000000009759245

1.

CHECK OPERATION OF METER BUZZER

1. Select BUZZER of BCM on CONSULT.

2. Perform LIGHT WARN ALM of Active Test.
Does meter buzzer activate?

YES

>> Inspection End.

NO

>> Refer to 

WCS-28, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009759246

1.

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. Refer to 

MWI-77, "Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

 (with Intelligent Key) or 

BCS-126,

"Removal and Installation"

 (without Intelligent Key).

Monitor Item

Condition

Status

BUZZER

Under the condition of the Buzzer input

ON

Except above

OFF