Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Wiper Motor: Description and Operation
SYSTEM OPERATION
Front
The two-speed permanent magnet wiper motor has an integral transmission and park switch. The motor also contains an internal automatic
resetting circuit breaker to protect the motor from overloads. The motor is secured to the wiper linkage and pivot module bracket with three screws
and is protected by a rubber boot. The wiper motor output shaft passes through a hole in the module bracket, where a nut secures the wiper motor
crank arm to the motor output shaft.
Wiper speed is controlled by current flow to the proper set of brushes. The wiper motor completes its wipe cycle when the windshield wiper switch
stalk is moved to the Off position, and parks the blades in the lowest portion of the wipe pattern.
The windshield wiper motor cannot be repaired. If faulty or damaged, the entire wiper motor and boot assembly must be replaced. The wiper
linkage and pivots module, which includes the wiper motor, is also available for service.
Rear
The rear wiper motor is secured on the inside of the lift-glass with a slotted bracket that fits onto a grommet under the right lift-glass hinge
mounting nut. The motor output shaft passes through the lift-glass, where a rubber gasket and a plastic bezel and nut unit seal and secure the output
shaft to the outside of the lift-glass. The rear wiper arm is secured directly to the motor output shaft.
The rear wiper motor unit contains an internal park switch. The motor also contains an automatic resetting thermal switch for overload protection.
The rear wiper motor cannot be repaired. If faulty or damaged, the entire rear wiper motor assembly must be replaced.
