Component Tests and General Diagnostics

POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT : Diagnosis Procedure

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

1. CHECK FUSE

Check that the following fuses of the AV control unit are not blown.





Is the inspection result normal?
YES- GO TO 2
NO- Replace the fuse after repairing the affected circuit. Refer to "Circuit Inspection" Circuit Inspection.

2. AV CONTROL UNIT POWER SUPPLY CIRCUIT CHECK

1.Disconnect AV control unit connector M70.
2.Check voltage between the AV control unit connector M70 and ground.





Are the voltage results as specified?
YES- GO TO 3
NO- Check harness between AV control unit and fuse.

3. CHECK GROUND CIRCUIT

Check continuity between AV control unit harness connectors M70, M71 and ground.





Does continuity exist?
YES- Inspection End.
NO- Repair harness or connector.