FixVault

System Testing

  1. On the touchscreen, set the temperature to LO  on both the driver and passenger controls.
  2. Run the A/C system for 10 minutes to allow the dye to circulate.
  3. Using an ultraviolet (UV) or blue light, examine all A/C lines for leaks.
    NOTE: Leaks glow a bright yellow-green.
    NOTE: If the vehicle is equipped with a rear HVAC assembly, examine the A/C lines that run along the RH rocker panel to the rear HVAC assembly.
  4. Once the leak is located, recover refrigerant from the vehicle A/C REFRIGERANT RECOVERY AND RECHARGE (REMOVE AND REPLACE) .
  5. Replace the defective component(s).
    NOTE: Also replace the desiccant bag, as the A/C system has experienced a leak. See RECEIVER DRYER AND DESICCANT (REMOVE AND REPLACE) .
  6. Recharge the vehicle with refrigerant A/C REFRIGERANT RECOVERY AND RECHARGE (REMOVE AND REPLACE) .
    CAUTION: If a component was replaced, additional oil must be added to the system. See the end of the "Recover Refrigerant and Verify Charge" section for more information.
  7. Use a general-purpose cleaner to clean off all dye residue. This prevents leftover residue from being mistake for a leak in future repairs. Confirm that all residue is removed by inspecting all A/C lines with a UV or blue light.
  8. Run the A/C system with the temperature set to LO  . Inspect all A/C lines with a UV or blue light to verify repairs.
  9. Fill out the Tracerline dye label and place it next to the A/C refrigerant label on the right underhood apron to inform future technicians that dye has been added to the A/C system.
  10. Reinstall all components that were removed for access.