AV Communication Line Check

CHECK AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector and AV switch connector.
3. Check continuity between display unit and AV switch.
  
  Fig 1: Connector Terminals Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking Continuity Between Display Unit & AV Switch
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between display unit and ground.
  
  Fig 3: Connector Terminals Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 2.
- NG: Repair harness.
CHECK AV COMMUNICATION SIGNAL
1. Connect display unit connector and AV switch connector.
2. Turn ignition switch ON.
3. Check the signal between display unit harness connector M93 terminals 11 (L), 13 (R) and ground with CONSULT-II or oscilloscope.
  11 (L), 13 (R) - Ground: Refer to TERMINALS AND REFERENCE VALUE FOR DISPLAY UNIT .
OK or NG
- OK: Replace AV switch. Refer to REMOVAL AND INSTALLATION FOR AV SWITCH .
- NG: Replace display unit. Refer to REMOVAL AND INSTALLATION OF DISPLAY UNIT .
  
  Fig 4: Checking Signal Between Display Unit Harness Connector Terminals & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.