Base Audio

POWER SUPPLY AND GROUND CIRCUIT

TEL ADAPTER UNIT : Diagnosis Procedure


1. CHECK FUSE

Check for blown fuses.





Is the inspection result normal?
YES- GO TO 2.
NO- 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 the inspection result normal?
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 the inspection result normal?
YES- INSPECTION END
NO- Repair harness or connector.