Nissan Versa (N17): Seat belt buckle switch signal circuit

Type A

TYPE A : Description

Transmits a seat belt buckle switch LH signal to the combination meter.

TYPE A : Component Function Check

1. CHECK COMBINATION METER INPUT SIGNAL

Select "DATA MONITOR" for "METER/M&A" and check the "SEAT BELT W/L" monitor value.

SEAT BELT W/L

When seat belt is fastened : OFF

When seat belt is unfastened : ON

Is the inspection result normal?

YES >> Inspection End.

NO >> Refer to WCS "TYPE A : Diagnosis Procedure".

TYPE A : Diagnosis Procedure

Regarding Wiring Diagram information, refer to WCS "Wiring Diagram".

1. CHECK COMBINATION METER INPUT SIGNAL

1. Turn ignition switch ON.

2. Check voltage between combination meter harness connector M24 terminal 34 and ground.

34 - Ground

When driver seat belt is fastened : Approx. 12V

When driver seat belt is unfastened : Approx. 0V

Is the inspection result normal?

YES >> Replace combination meter. Refer to MWI "Removal and Installation".

NO >> GO TO 2

2. CHECK SEAT BELT BUCKLE SWITCH LH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect combination meter and seat belt buckle switch LH.

3. Check continuity between combination meter harness connector M24 terminal 34 and seat belt buckle switch LH harness connector B13 terminal 1.

34 - 1 : Continuity should exist.

4. Check continuity between combination meter harness connector M24 terminal 34 and ground.

34 - Ground : Continuity should not exist.

Is the inspection result normal?

YES >> GO TO 3

NO >> Repair or replace harness.

3. CHECK SEAT BELT BUCKLE SWITCH LH GROUND CIRCUIT

Check continuity between seat belt buckle switch LH harness connector B13 terminal 2 and ground.

2 - Ground : Continuity should exist.

Is the inspection result normal?

YES >> Inspection End.

NO >> Repair or replace harness.

TYPE A : Component Inspection

1. CHECK SEAT BELT BUCKLE SWITCH LH

1. Turn ignition switch OFF.

2. Disconnect the seat belt buckle switch LH.

3. Check continuity between the seat belt buckle switch LH terminals 1 and 2.

1- 2

When seat belt is fastened : Continuity should not exist.

When seat belt is unfastened : Continuity should exist.

Is the inspection result normal?

YES >> Inspection End.

NO >> Replace the seat belt buckle switch LH.

Type B

TYPE B : Description

Transmits a seat belt buckle switch LH signal to the combination meter.

TYPE B : Component Function Check

1. CHECK COMBINATION METER INPUT SIGNAL

Select "DATA MONITOR" for "METER/M&A" and check the "SEAT BELT W/L" monitor value.

SEAT BELT W/L

When seat belt is fastened : OFF

When seat belt is unfastened : ON

Is the inspection result normal?

YES >> Inspection End.

NO >> Refer to WCS "TYPE B : Diagnosis Procedure".

TYPE B : Diagnosis Procedure

Regarding Wiring Diagram information, refer to WCS "Wiring Diagram".

1. CHECK COMBINATION METER INPUT SIGNAL

1. Turn ignition switch ON.

2. Check voltage between combination meter harness connector M82 terminal 9 and ground.

9 - Ground

When driver seat belt is fastened : Approx. 12V

When driver seat belt is unfastened : Approx. 0V

Is the inspection result normal?

YES >> Replace combination meter. Refer to MWI "Removal and Installation".

NO >> GO TO 2

2. CHECK SEAT BELT BUCKLE SWITCH LH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect combination meter and seat belt buckle switch LH.

3. Check continuity between combination meter harness connector M82 terminal 9 and seat belt buckle switch LH harness connector B13 terminal 1.

9 - 1 : Continuity should exist.

4. Check continuity between combination meter harness connector M82 terminal 9 and ground.

9 - Ground : Continuity should not exist.

Is the inspection result normal?

YES >> GO TO 3

NO >> Repair or replace harness.

3. CHECK SEAT BELT BUCKLE SWITCH LH GROUND CIRCUIT

Check continuity between seat belt buckle switch LH harness connector B13 terminal 2 and ground.

2 - Ground : Continuity should exist.

Is the inspection result normal?

YES >> Inspection End.

NO >> Repair or replace harness.

TYPE B : Component Inspection

1. CHECK SEAT BELT BUCKLE SWITCH LH

1. Turn ignition switch OFF.

2. Disconnect the seat belt buckle switch LH.

3. Check continuity between the seat belt buckle switch LH terminals 1 and 2.

1- 2

When seat belt is fastened : Continuity should not exist.

When seat belt is unfastened : Continuity should exist.

Is the inspection result normal?

YES >> Inspection End.

NO >> Replace the seat belt buckle switch LH.