Hi guys,

Helping a coworker with a '97 Cherokee, 4-door, power windows. Her rear passenger window was stuck down, wouldn't roll back up. I pulled the door panel, checked the switch and have 12v up and down. Assumed bad motor.

I pulled working lift motor from front door and switched to back door. When plugged into harness motor only turns when pressing switch down, and won't turn when you press up. Question is why won't it go up? I have 12v on both sides of the switch, just reversed polarity. What else could it be? Ground? I'm at a loss. Any help would be...helpful.

Thanks.

 

You have to buy the complete regulator package and the fronts and rear are different.

 

There's nothing wrong with the regulator in this case, and the lift motor is the same for the front and rear passenger door.

The motor, disconnected from the regulator, will not turn when pressing the switch up, but will turn when pressing the switch down. The switch shows +12v and -12v when pressing up or down at the connector right before the motor. Motor is fine, works up and down in the front door.