Check the HVAC control module (also known as the blower motor switch assembly), located just blow the radio. You'll have to remove the control module by removeing the trim around the radio assembly, and them remove the screws/bolts securing it to the dash.
Power comes in to the switch on the Brown wire at termina "B" (12volts). Terminal "A" (DK GRN) is gorund (through the control module). With the ignition switch on, and the HVAC control module switch in the "OFF" position there shouldn't be any power on the ORG wire at terminal "C" (this is the blowers HI setting). If there is power there, the switch is bad and the module has to be replaced.
For rear windows, check for arms which close windows binding during the closing process. Check for anything which they might be getting stuck on, preventing them from closing. Also, check to see if you can push the windows close after the motors have stopped running.
Next, use a test light to check for power at the motors when you push the switch (even with windows closed). Each time you push the switch power should go to the window motors for as long as you hold the switch. Hold it for about 8 seconds to see if the test light goes out before the time is up. If so the switch might be bad.
Saturday, August 21st, 2010 AT 2:15 PM