With Navigation

AMP ON SIGNAL CIRCUIT

Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" With Navigation.

1. CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND BOSE SPEAKER AMP.

1.Turn ignition switch OFF.
2.Disconnect AV control unit connector M151 and Bose speaker amp. connector B121.
3.Check continuity between audio unit connector M151 and Bose speaker amp. connector M121.





4.Check continuity between AV control unit connector M151 and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace harness or connectors.

2. CHECK AV CONTROL UNIT VOLTAGE

1.Connect AV control unit connector M151.
2.Turn ignition switch ON.
3.Check voltage between AV control unit connector M151 and ground.





Is the inspection result normal?
YES- Replace Bose speaker amp. Refer to "Removal and Installation" With Navigation.
NO- Replace AV control unit. Refer to "Removal and Installation" With Navigation.