AV Communication Line Check (Between Display Control Unit and NAVI Control Unit)

1. Check power supply and ground circuit for NAVI control unit. Refer to POWER SUPPLY AND GROUND CIRCUIT CHECK FOR NAVI CONTROL UNIT  .

OK or NG

1. OK: GO TO 2.
2. NG: Check the malfunctioning parts.

1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and display control unit connector.
3. Check continuity between NAVI control unit and display control unit.
   Fig 1: Displaying Terminal Connector Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Checking Continuity Between NAVI Control Unit And Display Control Unit.

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 3: Displaying Terminal Connector Specifications

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between NAVI control unit and ground.

OK or NG

1. OK: GO TO 3.
2. NG: Repair harness or connector.

1. Replace NAVI control unit.
2. Connect NAVI control unit connector and display control unit connector.
3. Turn ignition switch ON.
4. Start self-diagnosis of DCU and check the self-diagnosis result.

OK or NG

1. OK: Inspection End.
2. NG: Replace display control unit. Refer to , "REMOVAL AND INSTALLATION OF DISPLAY CONTROL UNIT  ".