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.