: 2135x1409 px
: July 4, 2018
Attach the leads of the multi-meter to where the electrical wires come into the motor. Again, set it to DC volts and it should read 12 volts. Look for any interrupted voltage caused by a loose connector or corrosion. If there are any loose or corroded connections in the circuit they will disrupt the signal and cause your window to malfunction. Fix the connector or corroded areas. Push any connectors or wiring harnesses together tightly, and clean any corrosion away with a wire brush or similar tool. Test the window again. If your problem was in the circuitry and is now fixed, then your window should freely roll up and down without any restrictions or delays.
If your vehicle does not use an automatic tensioning device, then check belt tension as follows: With the engine turned off, grasp the belt at a convenient point about 8 to 10 inches from the alternator pulley. Move the belt slowly up and down. The belt should not move more than about 12 inch. If the belt seems to be excessively loose, then of course it will require tightening andor replacement.