Try banging on the door panel while operating the switch to see if it works.
If it does not work, you would need to remove the door panel to get at the motor.
If the motor is good, manually applying battery voltage to the motor should get it up or down depending on the polarity. You would then need to check the switch and fuses.
If motor is bad, you would need to replace it.
Sunday, July 14th, 2013 AT 6:01 PM