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Home >> Infiniti >> 2023 >> QX60 Autograph, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (6 Of 6) >> DTC/Circuit Diagnosis >> Refrigerant Pressure Sensor >> Component Function Check
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Function Check

  1. CHECK REFRIGERANT PRESSURE SENSOR FUNCTION 
      1. Start engine and warm it up to normal operating temperature.
      2. Turn A/C switch and blower fan switch ON.
      3. Check the voltage between ECM harness connector terminals as per the following.
        ECM Condition Voltage
        + -
        Connector Terminal Connector Terminal
        F79 108 (Refrigerant pressure sensor signal) F79 125 [Engine is running]
        • Warm-up condition
        • Idle speed
        • Both A/C switch and blower fan motor switch: ON (Compressor operates)
        1.0 - 4.0 V

    Is the inspection result normal?

    YES>>

    INSPECTION END

    NO>>

    Proceed to Diagnosis Procedure .