2002 Nissan-Datsun Sentra SE-R, AutomaticFACTORY OEM SERVICE PROCEDURE

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

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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.
      CONTINUITY CHECK CHART

      Terminals Continuity
      Display control unit A/C and AV switch
      Connector Terminal (Wire color) Connector Terminal (Wire color)
      M43 28 (L/G) M48 6 (L/G) Yes
      30 (L/R) 8 (L/R)
    4. Check continuity between display control unit and ground.
      CONTINUITY CHECK CHART

      Terminals Continuity
      Display control unit Ground
      Connector Terminal (Wire color)
      M43 28 (L/G) No
      30 (L/R)
      Fig 1: Checking Continuity Between Display Control Unit And Ground
      G03492584Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: GO TO 2.
    2. NG: Repair harness or connector.
  2. CHECK SELF-DIAGNOSIS OF DCU 
    1. Replace 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: INSPECTION END.
    2. NG: Replace display control unit.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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