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Home >> Infiniti >> 2010 >> M35 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Audio, Visual & Navigation System) >> With Mobile Entertainment System >> Component Diagnosis >> Power Supply And Ground Circuit >> Front Display Unit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUSE 

    Check for blown fuses.

    FUSES SPECIFICATIONS

    Power source Fuse No.
    Battery 37
    Ignition switch ACC or ON 6

    Is the inspection result normal? 

    Yes: GO TO  2.

    No: Be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK POWER SUPPLY CIRCUIT 

    Check voltage between front display unit harness connector and ground.

    CONNECTOR TERMINAL VALUE TABLE

    Signal name Connector No. Terminal No. Ignition switch position Value (Approx.)
    Battery power supply M203 2 OFF Battery voltage
    ACC power supply M203 3 ACC Battery voltage

    Is the inspection result normal? 

    Yes: GO TO  3.

    No: Check harness between front display unit and fuse.

  3. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect front display unit connector.
    3. Check continuity between front display unit harness connector and ground.
      CONNECTOR TERMINAL CONTINUITY TABLE

      Signal name Connector No. Terminal No. Ignition switch position Continuity
      Ground M203 1 OFF Existed
      13

    Is the inspection result normal? 

    Yes: INSPECTION END

    No: Repair harness or connector.

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