Nissan Murano: Warning Chime System :: Dtc/circuit Diagnosis / Seat Belt Buckle Switch Signal Circuit

Component Function Check

CHECK COMBINATION METER INPUT SIGNAL

CONSULT

1. Select “BUCKLE SW” in “Data Monitor” mode of “METER/M&A”.

2. Check that the function operates normally according to the following conditions:

Is the inspection result normal?

Inspection End.

Refer to Diagnosis Procedure.

CHECK COMBINATION METER INPUT SIGNAL

1. Ignition switch ON.

2. Check voltage between combination meter harness connector and ground.

   (+)		(–)	Condition	Voltage (Approx.)
   Combination meter
   Connector	Terminal
   M24	28	Ground	When driver seat belt is fastened	Battery voltage
   			When driver seat belt is unfastened	0 V

Is the inspection result normal?

Replace combination meter. Refer to Removal and Installation.

GO TO 2.

CHECK FRONT SEAT BELT BUCKLE SWITCH LH CIRCUIT

1. Ignition switch OFF.

2. Disconnect combination meter harness connector and front seat belt buckle switch LH harness connector.

3. Check continuity between combination meter harness connector and front seat belt buckle switch LH harness connector.

   Combination meter		Front seat belt buckle switch LH		Continuity
   Connector	Terminal	Connector	Terminal
   M24	28	B231	4	Yes

4. Check continuity between combination meter harness connector and ground.

   Combination meter		Ground	Continuity
   Connector	Terminal
   M24	28		No

Is the inspection result normal?

GO TO 3.

Repair or replace harness or connector.

CHECK FRONT SEAT BELT BUCKLE SWITCH LH GROUND CIRCUIT

Check continuity between front seat belt buckle switch LH harness connector and ground.

Is the inspection result normal?

Inspection End.

Repair or replace harness or connector.

CHECK FRONT SEAT BELT BUCKLE SWITCH LH

1. Ignition switch OFF.

2. Disconnect the front seat belt buckle switch LH connector.

3. Check continuity between the front seat belt buckle switch LH.

   Condition	Terminal	Continuity
   When front seat belt buckle LH is fastened	3– 4	No
   When front seat belt buckle LH is unfastened		Yes

Is the inspection result normal?

Inspection End.

Replace the front seat belt buckle switch LH. Refer to Removal and Installation.