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A/C Heater Controls

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the test set vacuum probe to the HVAC vacuum supply (black) line at the tee in the engine compartment. Position the test set gauge so that it can be viewed from the passenger compartment.
  2. Place the A/C-heater mode control in each mode position, one position at a time, and pause after each selection. The test set gauge should return to the 27 kPa (8 in. Hg.) setting shortly after each selection is made. If not OK, a component or vacuum line in the vacuum circuit of the selected mode has a leak. See the procedure in Locating Vacuum Leaks.
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