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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Systems (Service Information) >> Plumbing >> Diagnosis And Testing >> Refrigerant System Leaks >> System Low

System Low

  1. Position the vehicle in a wind-free work area. This will aid in detecting small leaks.
  2. Operate the heating-A/C system with the engine at idle under the following conditions for at least five minutes.
    1. Doors or windows open
    2. Transaxle in Park or Neutral with the parking brake set (depending on application)
    3. A/C-heater controls set to outside air, full cool, panel mode, high blower and with A/C compressor engaged
    CAUTION: A leak detector only designed for R-12 refrigerant will not detect leaks in an R-134a refrigerant system.
  3. Shut the vehicle Off and wait 2-7 minutes. Then use an electronic leak detector that is designed to detect R-134a refrigerant and search for leaks. Fittings, lines or components that appear to be oily usually indicate a refrigerant leak. To inspect the A/C evaporator for leaks, insert the leak detector probe into the drain tube opening or an air outlet. A dye for R-134a is available to aid in leak detection. Use only DaimlerChrysler approved refrigerant dye.
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