AV CONTROL UNIT: Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CHECK FUSES
Check that the following AV control unit fuses are not blown.
Unit Terminals Signal name Fuse No. AV control unit 19 Battery power 31 7 Ignition switch ACC or ON 4 68 Ignition switch ON or START 12 Are the fuses OK?
YES: GO TO 2
NO: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
- POWER SUPPLY CIRCUIT CHECK
- Disconnect AV control unit connectors M161 and M165.
- Check voltage between the AV control unit connectors M161 and M165 and ground.
(+) (-) OFF ACC ON Connector Terminal M161 7 Ground 0V Battery voltage Battery voltage 19 Ground Battery voltage Battery voltage Battery voltage M165 68 Ground 0V 0V Battery voltage Are the voltage results as specified?
YES: GO TO 3
NO:
- Check connector housings for disconnected or loose terminals.
- Repair harness or connector.
- GROUND CIRCUIT CHECK
- Ignition OFF.
- Disconnect AV control unit connector M163.
- Check continuity between AV control unit harness connectors M161, M163 and M165 and ground.
Connector (+) (-) Continuity Terminal M161 20 Ground Yes M165 54 M163 93 95 99 100 102 Are the continuity results as specified?
YES: Inspection End.
NO: Repair AV control unit ground.