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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 4) >> DTC/Circuit Diagnosis >> Refrigerant Pressure Sensor >> Component Function Check >> Diagnostic Test
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Diagnostic Test

  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 Voltage (V)
      Connector + -
      Terminal Terminal
      M164 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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