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Home >> Infiniti >> 2011 >> G37 Base, 2D Coupe >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ37VHR) - Introduction (2 Of 2) >> Refrigerant Pressure Sensor >> Component Function Check

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.
    TERMINAL VOLTAGE REFERENCE CHART

    ECM Voltage (V)
    Connector + -
    Terminal Terminal
    M107 105 (Refrigerant pressure sensor signal) 112 1.0 - 4.0

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".

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