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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System -- G37 Coupe >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> AFS Control Unit >> AFS CONTROL UNIT : Diagnosis Procedure

AFS CONTROL UNIT : Diagnosis Procedure

  1. FUSE INSPECTION

    Check that the following fuses are not fusing.

    FUSE REFERENCE CHART

    Signal name Connection position Fuse No. Capacity
    Ignition power supply FUSE BLOCK (J/B) 3 10 A

    Is the fuse fusing? 

    YES: Repair the applicable circuit. And then replace the fuse.

    NO: GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT
    1. Turn the ignition switch OFF.
    2. Disconnect AFS control unit harness connector.
    3. Turn the ignition switch ON.
    4. Check voltage between AFS control unit harness connector and the ground.
      VOLTAGE REFERENCE CHART

      Terminals Voltage (Approx.)
      (+) (-)
      AFS control unit Ground
      Connector Terminal
      M16 1 Battery voltage

      Is the measurement value normal? 

      YES: GO TO 3.

      NO: Repair the harness or connector.

  3. CHECK GROUND CIRCUIT
    1. Turn the ignition switch OFF.
    2. Check continuity between AFS control unit harness connectors and the ground.
      CONTINUITY REFERENCE CHART

      AFS control unit Ground Continuity
      Connector Terminal
      M16 25 Existed

      Does continuity exist? 

      YES: Repair the harness or connector.

      NO: Power supply and ground circuit are normal.

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