Diagnosis Procedure

SEAT BELT BUCKLE SWITCH


Description

Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle switch detects condition of seat belt.




SEAT BELT BUCKLE SWITCH


Diagnosis Procedure

1.CHECK SEAT BELT BUCKLE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect seat belt buckle switch harness connector.
3. Check voltage between seat belt buckle switch harness connector harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.CHECK SEAT BELT BUCKLE SWITCH CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check continuity between driver seat control unit harness connector and seat belt buckle switch harness connector.





3. Check continuity between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES - Replace driver seat control unit. Refer to Driver Seat Control Unit.
NO - Repair or replace harness.
3.CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK SEAT BELT BUCKLE SWITCH
Refer to Component Inspection.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace seat belt buckle switch (Built in seat belt buckle). Refer to Exploded View.
5.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END