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Home >> Toyota >> 2011 >> Highlander Hybrid >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Manual) (Diagnostic Codes & Circuit Tests) (Hybrid) >> Air Conditioning Pressure Sensor >> On-Vehicle Inspection >> On-Vehicle Inspection

On-Vehicle Inspection

  1. INSPECT A/C PRESSURE SENSOR 
    1. Install the manifold gauge set.
    2. Disconnect the connector from the A/C pressure sensor.
    3. Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 3 and the negative (-) lead to terminal 1.
      Fig 1: Identifying A/C Pressure Sensor Connector
      GTY124003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1.
    5. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      2 - 1 Refrigerant pressure:
      0.39 to 3.187 MPa (57 to 463 psi)      		 1.0 to 4.8 V

      If the result is not as specified, replace the A/C pressure sensor.

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