Audio System

POWER SUPPLY AND GROUND CIRCUIT


TEL ADAPTER UNIT : Diagnosis Procedure

1.CHECK FUSES
Check that the following fuses of the TEL adapter unit are not blown.





Is inspection result OK?
YES - GO TO 2.
NO - If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between TEL adapter unit harness connector and ground.





Is inspection result OK?
YES - GO TO 3.
NO - Check harness between TEL adapter unit and fuse.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TEL adapter unit connector.
3. Check continuity between TEL adapter unit harness connector and ground.





Is inspection result OK?
YES - INSPECTION END
NO - Repair harness or connector.