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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter, Warning Lamp & Indicator >> DTC/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
    M34 19 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
      M34 19 M50 6 Existed
    4. Check continuity between combination meter harness connector and ground.
    Combination meter Ground Continuity
    Connector Terminal
    M34 19 Not existed

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Repair harness or connector.