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Originally Posted by glenn1179
I got it to go down and up some and then it just died with a about an inch to go until closed.
I took the door panel off and wired a car battery directly to the motor, but it didn't move or make noise.
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There is a problem with the diagnosis.
The window moved and then it stopped with one inch to go. This tells me the motor is properly functioning........unless it gave up the ghost right at that moment........an unlikely scenario.
Then, you hook up 12V to the motor and it does not function at all..........
I think the 12V test has some flaw in the procedure. Did you connect 12V to one motor lead and ground to the second lead? Did you then reverse the leads to see if the window would move in the opposite direction? Did you feel the motor and see if it was operating during this test? The motor may run but the regulator may be shot. If I had to bet, this is the more likely scenario.
In any case, the regulator and motor come out of the door as a unit. Then you can see what you have and bench test the motor properly........and determine if the motor......or the regulator.....is the final culprit.