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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Electrical >> Gauges >> Meter, Warning Lamp And Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Combination Meter >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSES 
    1. Check that the following fuses are not blown:
      Unit Power source Fuse No. Capacity
      Combination meter Battery 39 10 A
      Ignition switch ON or START 50 5 A

    Is the fuse blown?

    YES>>

    Replace the blown fuse after repairing the affected circuit.

    NO>>

    GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT 
      1. Disconnect combination meter harness connector.
      2. Check voltage between combination meter harness connector and ground.
        (+) (-) Ignition switch position
        Combination meter
        Connector Terminal OFF ON START
        M76 21 Ground Battery voltage Battery voltage Battery voltage
        2 0V Battery voltage Battery voltage

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace harness or connector.

  3. CHECK GROUND CIRCUIT 
      1. Ignition switch OFF.
      2. Check continuity between combination meter harness connector and ground.
        Combination meter - Continuity
        Connector Terminal
        M76 1 Ground Yes
        M77 41

    Is the inspection result normal?

    YES>>

    Inspection End.

    NO>>

    Repair or replace harness or connector.