Durango 4WD V8-5.9L VIN Z (1998)
Vacuum Circuit Test
2. Connect the test set vacuum hose probe to each port in the vacuum harness connector, one port at a time, and pause after each connection. The test
set gauge should return to the 27 kPa (8 in. Hg.) setting shortly after each connection is made. If OK, replace the faulty heater-A/C control. If not
OK, go to Step 4.
