AV Communication Line Check (Between Display Control Unit and A/C and AV Switch)

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK A/C AND AV SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display control unit connector and A/C and AV switch connector.
3. Check continuity between display control unit and A/C and AV switch.
  
  Fig 1: Terminal Continuity Specification
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between display control unit and ground.
  
  Fig 2: Checking Continuity Between Display Control Unit And A/C And AV Switch
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Terminal Continuity Specification
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK : GO TO 2.
2. NG : Repair harness or connector.
SELF-DIAGNOSIS OF DCU
1. Replace same normal A/C and AV switch.
2. Connect display control unit connector and A/C and AV switch connector.
3. Turn ignition switch ON.
4. Start self-diagnosis of DCU, and check the self-diagnosis result.
OK or NG
1. OK : Replace A/C and AV switch.
2. NG : Replace display control unit.