Component Tests and General Diagnostics

SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT

Description

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


Component Function Check


1. CHECK COMBINATION METER INPUT SIGNAL

Select DATA MONITOR for METER/M&A and check the BUCKLE SW monitor value.

BUCKLE SW
When seat belt LH (driver seat) is fastened: OFF
When seat belt LH (driver seat) is unfastened: ON

YES- Inspection End.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Audible Warning Device.

1. CHECK COMBINATION METER INPUT SIGNAL

1.Turn ignition switch ON.
2.Check voltage between combination meter harness connector M24 terminal 9 and ground.





Is the inspection result normal?
YES- Replace combination meter. Refer to "Removal and Installation" Service and Repair.
NO- GO TO 2.

2. CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect combination meter harness connector M24 and seat belt buckle switch LH (driver seat) harness connector B202.
3.Check continuity between combination meter harness connector M24 terminal 9 and seat belt buckle switch LH (driver seat) harness connector B202 terminal 1.





4.Check continuity between combination meter harness connector M24 terminal 9 and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness or connectors.

3. CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check harness continuity between seat belt buckle switch LH (driver seat) harness connector B202 terminal 2
and ground.





Is the inspection result normal?
YES- Inspection End.
NO- Repair or replace harness or connectors.


Component Inspection


1. CHECK SEAT BELT BUCKLE SWITCH

1.Turn ignition switch OFF.
2.Disconnect the seat belt buckle switch LH (driver seat).
3.Check continuity between the seat belt buckle switch LH (driver seat) terminals 1 and 2.





Is the inspection result normal?
YES- Inspection End.
NO- Replace the seat belt buckle switch LH (driver seat). Refer to "Removal and Installation" Service and Repair.