PRESSURE SWITCH > ON-VEHICLE INSPECTION

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1. CHECK A/C PRESSURE SENSOR


    E110988E01

  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
      B4-1 - Body ground
      		Below 1 Ω

    3. Measure the voltage of the wire harness side connector.

      Standard voltage:
      Tester Connection
      		Specified Condition
      B4-1 - B4-3
      		5 V



    E103353E04

  1. Check the 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
      L52-13 (PRE) - L52-38 (SG-2)
      		0.196 to 3.14 MPa (2.0 to 32 kgf/cm2)
      		0.73 to 4.85 V

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



2. CHECK LOW PRESSURE SENSOR


    E110988E03

  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
      A51-1 - Body ground
      		Below 1 Ω

    3. Measure the voltage of the wire harness side connector.

      Standard voltage:
      Tester Connection
      		Specified Condition
      A51-1 - A51-3
      		5 V



    E109822E01

  1. Check the 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
      L52-18 (SG-3) - L52-32 (PSW)
      		0 to 0.98 MPa (0 to 10 kgf/cm2)
      		0.4 to 4.6 V

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