Power Supply and Ground Circuit Inspection for AV Control Unit

Fig 1: Fuse Checking Table

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: Go to 2.
2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. See POWER DISTRIBUTION .

1. Disconnect AV control unit connector.
2. Check voltage between AV control unit and ground.
   Fig 2: Power Supply Circuit Terminals Specification Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 3: Checking Voltage Between AV Control Unit And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: Go to 3.
2. NG: Check harness for open or short between AV control unit and fuse.

1. Turn ignition switch OFF.
2. Check continuity between AV control unit harness connector M78 terminals 1 (B), 4 (B) and ground.
   1. Continuity should exist. 

OK or NG 

1. OK: Inspection end.
2. NG: Repair harness or connector.

Fig 4: Checking Ground Circuit AV Control Unit Harness Connector M78 Terminals 1, 4 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.