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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 219 (HVAC System (Service Information)) >> HVAC - Service Information >> Plumbing >> Diagnosis And Testing >> Refrigerant System Leaks >> System Low

System Low

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  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 5 minutes.
    1. Doors or windows open
    2. Transmission in Park
    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 Chrysler approved refrigerant dye.