AV CONTROL UNIT : Diagnosis Procedure
- CHECK FUSE
Check for blown fuses.
FUSES REFERENCE CHARTPower source Fuse No. Battery 34 Ignition switch ACC or ON 19 Ignition switch ON or START 3 Is the inspection result normal?
YES: GO TO 2.
NO: Be sure to eliminate the cause of malfunction before installing new fuse.
- CHECK POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connectors and ground.
VOLTAGE REFERENCE CHARTSignal name Connector No. Terminal No. Ignition switch position Voltage (Approx.) Battery power supply M84 19 OFF Battery voltage M85 22 24 ACC power supply M84 7 ACC Battery voltage M85 25 Ignition signal M85 35 ON Battery voltage Is the inspection result normal?
YES: GO TO 3.
NO: Check harness between AV control unit and fuse.
- CHECK GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect AV control unit connectors.
- Check continuity between AV control unit harness connectors and ground.CONTINUITY REFERENCE CHART
Signal name Connector No. Terminal No. Ignition switch position Continuity Ground M85 21 OFF Existed 23 43 Is the inspection result normal?
YES: INSPECTION END
NO: Repair harness or connector.