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.
   TERMINALS CONTINUITY REFERENCE
   
   

   Terminals				Continuity
   NAVI control unit (+)		Display control unit (-)
   Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
   M97	44 (L)	M95	32 (L)	Yes
   	45(P)		34 (P)

4. Check continuity between NAVI control unit and ground.

Fig 1: Checking Continuity Between NAVI Control Unit & Ground

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

OK or NG

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

1. Connect NAVI control unit connector and display control unit connector.
2. Turn ignition switch ON.
3. Check signal between NAVI control unit harness connector M97 terminal 44 (L) and 45 (P) with CONSULT-II or oscilloscope.
   1. 44 (L), 45 (P) - Ground  : Refer to "TERMINALS REFERENCE VALUE FOR NAVI CONTROL UNIT  ".

OK or NG

1. OK: Replace display control unit. Refer to REMOVAL AND INSTALLATION OF NAVI CONTROL UNIT  .
2. NG: Replace NAVI control unit. Refer to REMOVAL AND INSTALLATION OF NAVI CONTROL UNIT  .

Fig 2: Checking Signal Between NAVI Control Unit Harness Connector Terminal & With CONSULT-II Or Oscilloscope

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