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Home >> Infiniti >> 2018 >> QX30 Essential, FWD >> Repair and Diagnosis >> Electrical >> Gauges >> Meter, Warning Lamp Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE 

    Check for blown fuses.

    Power source

    Fuse No.

    Battery

    88

    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 combination meter harness connector and ground.

    Probe

    Ignition switch position

    Voltage

    (Approx.)

    +

    -

    Combination meter

    Connector

    Terminal

    M32

    4

    Ground

    OFF

    Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Check harness between combination meter and fuse.

  3. CHECK GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector.
    3. Check continuity between combination meter harness connector and ground.

      Combination meter

      Ground

      Continuity

      Connector

      Terminal

      M32

      1

      Existed

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Repair harness or connector.