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Home >> Nissan-Datsun >> 2009 >> Altima Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Component Testing (Except Hybrid - Qr25DE) (Except For CALIFORNIA) >> Refrigerant Pressure Sensor >> Component Function Check
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Component Function Check

  1. CHECK REFRIGERANT PRESSURE SENSOR OVERALL 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 and ground.
      VOLTAGE REFERENCE CHART

      ECM Ground Voltage
      Connector Terminal
      F13 39 (Refrigerant pressure sensor signal) Ground 1.0 - 4.0V
      Fig 1: Checking Voltage Between ECM Harness Connector And Ground
      G04926281Courtesy of NISSAN MOTOR CO., U.S.A.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".

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