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Home >> Nissan-Datsun >> 2021 >> Altima S >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Pr25DD) (DTC/Circuit Diagnosis) (4 Of 4) >> DTC/Circuit Diagnosis >> Refrigerant Pressure Sensor >> Component Function Check >> PR25DD engine
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PR25DD engine

  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 under the following conditions.

      ECM

      Voltage (V)

      Connector

      +

      -

      Terminal

      F91

      48

      45

      1.0 - 4.0

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Refer to Diagnosis Procedure .

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