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

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 

OK: GO TO 2.

NG: Check the malfunctioning parts.

1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector B152 and display control unit connector M95.
3. Check continuity between NAVI control unit and display control unit.
   CONNECTOR TERMINALS CONTINUITY REFERENCE
   
   

   Terminals				Continuity
   B		A
   Connector	Terminal	Connector	Terminal
   NAVI control unit: B152	69	Display control unit: M95	32	Yes
   	70		34

4. Check continuity between NAVI control unit and ground.

OK or NG 

OK: GO TO 3.

NG: Repair harness or connector.

Fig 1: Checking Continuity Between NAVI Control Unit And Ground

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

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 

OK: Inspection End.

NG: Replace display control unit. Refer to , "DISPLAY CONTROL UNIT "