Cherokee 2WD L6-4.0L VIN S (1998)
Power Window Motor: Testing and Inspection
Before you proceed with this diagnosis, confirm proper switch operation. See the Windows and Glass/Windows/Power Window Control Module/Door
Module and/or Windows and Glass/Windows/Power Window Switch diagnosis.
1. Disconnect and isolate the battery negative cable. Remove the door trim panel as described in Door Module (front door) or Power Window Switch
(rear door).
2. Unplug the power window motor wire harness connector. Apply 12 Volts across the motor terminals to check its operation in one direction.
Reverse the connections across the motor terminals to check the operation in the other direction. Remember if the window is in the full up or full
down position, the motor will not operate in that direction by design. If OK, repair the circuits from the motor to the door module or the switch as
required. If not OK, replace the faulty motor.
3. If the motor operates in both directions, check the operation of the window glass and lift mechanism through its complete up and down travel.
There should be no binding or sticking of the window glass or lift mechanism through the entire travel range. If not OK, refer to Windows and
Glass/Windows/Power Window Motor to check the window glass, tracks, and regulator for sticking, binding, or improper adjustment.