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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Systems (Service Information) >> Controls >> SWITCH, A/C High Pressure Cut Off >> Diagnosis and Testing >> A/C High Pressure Switch

A/C High Pressure Switch

NOTE: For circuit descriptions and diagrams, refer to SYSTEM WIRING DIAGRAMS . The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.

Before performing diagnosis of the A/C high pressure switch, verify that the refrigerant system has the correct refrigerant charge. See Heating and Air Conditioning/Plumbing - Standard Procedure .

  1. Disconnect and isolate the negative battery cable.
  2. Disconnect the wire harness connector from the A/C high pressure switch.
  3. Using an ohmmeter, check for continuity between both terminals of the A/C high pressure switch. There should be continuity. If there is not continuity, replace the faulty A/C high pressure switch. If there is continuity, test the A/C high pressure switch sense circuit and repair as required. Refer to SYSTEM WIRING DIAGRAMS .
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