AIR CONDITIONING PRESSURE SENSOR ON-VEHICLE INSPECTION


  1. CHECK A/C PRESSURE SENSOR

    A01FEWJE13
    Text in Illustration
    *a

    Front view of wire harness connector

    (to A/C pressure Sensor )

    1. Check the wire harness.


      1. Disconnect the connector from the pressure sensor.

      2. Measure the resistance of the wire harness side connector.

        Standard Resistance
        Tester Connection Specified Condition
        1 - Body ground Below 1 Ω
    2. A01FDNXE01
      Text in Illustration
      *a

      Component with harness connected

      (Air Conditioner Amplifier Assembly)
      *b Voltage
      *c Refrigerant Pressure

      Check the air conditioning pressure sensor.


      1. Set the manifold gauge.

      2. Connect the connector to the pressure sensor.

      3. Warm up the engine.

      4. A/C switch is turned ON.

      5. Measure the resistance according to the value(s) in the table below.

        Standard Voltage
        Tester Connection Condition Specified Condition
        9 (PRE) - 13 (SG-2)

        Refrigerant pressure:

        Normal pressure (less than 3.14 MPa [32.0 kg/cm2, 455 psi] and more than 0.196 MPa [2.0 kg/cm2, 28 psi])

        		 0.734 to 4.848 V
        9 (PRE) - 13 (SG-2)

        Refrigerant pressure:

        Abnormal (less than 0.196 MPa [2.0 kg/cm2, 28 psi])

        		 Below 0.734 V
        9 (PRE) - 13 (SG-2)

        Refrigerant pressure:

        Abnormal (more than 3.14 MPa 32.0 kg/cm2, 455 psi])

        		 4.848 V or higher

        Note

        Check from the rear of the connector while it is connected to the air conditioning amplifier.

        Tech Tips


        • Because the air conditioning pressure sensor connector is waterproof and can not be checked, check the air conditioning amplifier assembly. Also, if the measurement is less than 1 V, open-circuit of the harness may occur.

        • The specified condition is the value included in the pressure deviation.

        If the result is not as specified, replace the sensor.