Most of the time the actual gears and the shaft that turns the actual wiper gets clogged up with junk. Make sure all fuses are good. This link provides alot of useful information on repairing the actual motor it self. Hardest part is removing your trim. Hope i helped ya.
Bumping and hijacking: My 2001 rear wiper isn't working. I have power to the switch, and it illuminates and the wash function works, but the wiper never moves. I can't remember how long its been broke but the switch is new for a couple of somewhat unrelated reasons. Anyhow, does anyone know what the voltages should be and what the wires are for a 2001 model? Google gives me a 1991 and a grand cherokee. I need info for an XJ. I figured out the power and ground, and some research mentioned the fuses being 6 and 22, both are intact and ok. Im not clear on the functions of the striped wires. If I know the voltages are good and any digging around Ive done hasn't damaged the wiring, then I can move to tear the hatch apart and inspect the motor. Thanks guys
My rear wiler is dead too Superman, just quit one a day a few years ago. If I listen closely I can hear the motor clicking and trying to move, but it just doesn’t. So pretty sure mine is just a bad motor, just haven’t got round to fixing it.
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