Base Audio

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT : Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" Audio System.

1. CHECK FUSES

Check that the following fuses of the audio unit are not blown.





Are the fuses OK?
YES- GO TO 2
NO- Replace the fuse after repairing the affected circuit.

2. POWER SUPPLY CIRCUIT CHECK

1.Disconnect audio unit connector M43.
2.Check voltage between the audio unit connector M43 and ground.





Are the voltage results as specified?
YES- GO TO 3
NO- - Check connector housings for disconnected or loose terminals.
- Repair or replace harness or connector.

3. GROUND CIRCUIT CHECK

Inspect audio unit case ground.
Is the inspection result normal?
YES- Inspection End.
NO- Repair audio unit case ground.