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Home >> Infiniti >> 2016 >> QX50 RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> Power Supply And Ground Circuit >> Unified Meter And A/C Amp. >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

    Check for blown fuses.

    Power source Fuse No.
    Battery 6
    Ignition switch ACC or ON 19
    Ignition switch ON or START 3

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK POWER SUPPLY CIRCUIT

    Check voltage between unified meter and A/C amp. harness connector and ground.

    Terminals Ignition switch position Value (Approx.)
    (+) (-)
    Unified meter and A/C amp. Terminal Signal name
    M67 54 Battery power supply Ground OFF Battery voltage
    41 ACC power supply ACC
    53 Ignition signal ON

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Check harness between unified meter and A/C amp. and fuse.

  3. CHECK GROUND CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect unified meter and A/C amp. connector.
    3. Check continuity between unified meter and A/C amp. harness connector and ground.
      Unified meter and A/C amp. Ground Continuity
      Connector Terminal
      M67 55 Existed
      71

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Repair harness or connector.

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