Sounds like a bad switch. The motor is easy to test. Remove the trim panel, remove the two wire connection to the motor. Now use two wires, of different colors, connected to the battery to touch the pins in the connector ON the motor. When you apply power with the wires connected one direction the window should go either up or down. Reverse the wires and touch them again and the window should go the opposite direction.
To test the switches, connect a digital volt meter to the two pins inside the connector that you removed from the motor. Most meters will tell you if they are hooked up "backwards" on DC. So when you have it connected to the wires, Pushing the switch one direction should read battery voltage and pushing the switch the other way will show a minus sign in front of the battery voltage. Because the switches simply reverse the polarity to raise/lower the window.
Thursday, May 11th, 2017 AT 9:31 PM