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Leak Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.
  1. Begin searching for refrigerant leaks using a high quality UV light to detect the fluorescent refrigerant leak detection dye.
    • Inspect all connections, plumbing fittings, brazed joints, hoses, hose crimps, service ports, compressor housing, pressure relief valve and A/C condenser for dye.
    • Inspect the evaporator drain tube and condensate for presence of dye, which indicates a leak from the A/C evaporator.
    • If equipped with rear A/C, inspect the underbody refrigerant lines, fittings, rear evaporator drain tube and condensate for presence of dye, which indicates a leak from the rear evaporator.
    • If no leaks are found using a UV light, proceed to step #2  .
  2. If a leak is not found with the leak detection dye, operate the heating and A/C system with the engine at idle under the following conditions for at least 15 minutes, then proceed to step #3  .
    • Doors or windows open
    • Transmission in Park or Neutral with the parking brake set (depending on transmission application)
    • A/C and heater controls set to outside air, full cool, panel mode, high blower and A/C compressor engaged (If the A/C compressor does not engage, go to LOW OR EMPTY REFRIGERANT SYSTEM .
    • If equipped with rear A/C, set rear controls to full cool and high blower.
  3. Shut the vehicle off and wait at least 5 minutes.
    NOTE:

    Make sure the proper leak detection tip is used for the refrigerant being checked. R-1234yf does not use the same leak detection tip as R-134a. 

  4. Insert the leak detector into the evaporator drain tube and the instrument panel air outlets, to check for evaporator leaks. Check the evaporator tubes at the A/C expansion valve, for leaks not visible behind the expansion valve. Check around the front of the A/C compressor, for compressor shaft seal leaks. Check between the A/C condenser and radiator for condenser leaks not previously visible.
  5. If equipped with rear A/C, insert the leak detector into the rear evaporator drain tube and rear air outlets. Check the underbody A/C lines and fittings, evaporator tubes and rear A/C expansion valve.
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