Test Km: Step 22

22) Check WAC Cycling  With vehicle in Output State Check, disconnect A/C fan controller and set DVOM on 20-volt scale. Connect DVOM positive test lead to ignition run circuit and negative test lead to WAC circuit at A/C fan controller harness connector. Check DVOM while depressing and releasing throttle several times, to cycle system. If voltage cycles from high to low, replace A/C fan controller. Reconnect components and retest system. If voltage does not cycle, remove jumper and reconnect components. Go to next step.