Seat Belt Buckle Switch (Driver Side)

SEAT BELT BUCKLE SWITCH (DRIVER SIDE)

Component Function Check


1. CHECK SEAT BELT WARNING LAMP FUNCTION

1.Turn ignition switch ON.
2.Sits in the passenger seat.
3.Fasten the seat belt (passenger side).
4.Check seat belt warning lamp function.





Is the inspection results normal?
YES- GO TO 2.
NO- Check seat belt warning lamp circuit. Seat Belt Warning Lamp Circuit.

2. CHECK PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE) FUNCTION

With CONSULT
When checking "BUCKLE SW LH" on DATA MONITOR screen, check that ON/OFF display changes synchronized with the insertion operation to the seat belt buckle.





Is the inspection result normal?
YES- Seat belt buckle switch (driver side) circuit is normal.
NO- Check seat belt buckle switch (driver side). .


Diagnosis Procedure


1. CHECK PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE) OUTPUT SIGNAL

1.Turn ignition switch OFF.
2.Disconnect seat belt assembly (driver side) harness connector.
3.Turn ignition switch ON.
4.Check voltage between seat belt assembly (driver side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK SEAT BELT ASSEMBLY (DRIVER SIDE) CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect pre-crash seat belt control unit (driver side) harness connector.
3.Check continuity between pre-crash seat belt control unit (driver side) harness connector and seat belt assembly (driver side) harness connector.





4.Check continuity between pre-crash seat belt control unit (driver side) harness connector and ground.





Is the inspection result normal?
YES- Replace pre-crash seat belt control unit (driver side). Removal And Installation.
NO- Repair or replace harness or connector.

3. CHECK SEAT ASSEMBLY SWITCH GROUND CIRCUIT

Check continuity between seat belt assembly (driver side) and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness or connector.

4. CHECK SEAT BELT ASSEMBLY (DRIVER SIDE)

Check seat belt assembly (driver side). .
Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Replace seat belt assembly (driver side). Removal And Installation.