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Home >> Infiniti >> 2021 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator (Diagnostics) >> Component Parts /Circuit Diagnosis >> A/C Auto Amp. Connection Recognition Signal Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL 
    1. Turn ignition switch ON.
    2. Check voltage between combination meter harness connector and ground.

      Terminals

      Voltage

      (Approx.)

      (+)

      (-)

      Combination meter

      Ground

      Connector

      Terminal

      M344

      50

      5 V

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    GO TO 2.

  2. CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect combination meter connector and A/C auto amp. connector.
    3. Check continuity between combination meter harness connector and A/C auto amp. harness connector.

      Combination meter

      A/C auto amp.

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      M344

      50

      M342

      6

      Existed

    4. Check continuity between combination meter harness connector and ground.

      Combination meter

      Ground

      Continuity

      Connector

      Terminal

      M344

      50

      Not existed

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Repair harness or connector.