Power Supply and Ground Circuit

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure


1. CHECK GROUND CIRCUIT

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





Is the measurement value normal?
YES- GO TO 2.
NO- Repair or replace harness or connector.

2. CHECK POWER SUPPLY CIRCUIT-I

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





Is the measurement value normal?
YES- INSPECTION END
NO- GO TO 3.

3. CHECK POWER SUPPLY CIRCUIT-II

1.Disconnect fuse block (J/B) harness connector.
2.Check continuity between pre-crash seat belt control unit (driver side and passenger side) harness connector and fuse block (J/B) harness connector.





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





Is the measurement value normal?
YES- Check 10 A fuse (No. 6).
NO- Repair or replace harness or connector.