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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator >> DTC/Circuit Diagnosis >> Trip Reset And Illumination Control Switch Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK COMBINATION METER INPUT SIGNAL
    1. Turn ignition switch ON.
    2. Measure voltage between the following terminals of the combination meter:
    (+) (-) Condition Voltage (Approx.)
    Combination meter Ground
    Connector Terminals
    M34 8 When trip reset switch is pressed 0 V
    Other than the above 5 V
    13 When illumination control switch (+) is pressed 0 V
    Other than the above 5 V
    14 When illumination control switch (-) is pressed 0 V
    Other than the above 5 V

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: GO TO 2.

  2. CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector and trip reset and illumination control switch connector.
    3. Check continuity between combination meter harness connector and trip reset and illumination control switch harness connector.
      Terminals Continuity
      Combination meter Trip reset and illumination control switch
      Connector Terminal Connector Terminal
      M34 8 M83 5 Existed
      13 3
      14 4
    4. Check continuity between combination meter harness connector and ground.
    Combination meter Ground Continuity
    Connector Terminal
    M34 8 Not existed
    13
    14

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair harness or connector.

  3. CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH GROUND CIRCUIT

    Check continuity between trip reset and illumination control switch connector and ground.

    Trip reset and illumination control switch Ground Continuity
    Connector Terminal
    M83 6 Existed

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Repair harness or connector.