Jeep Cherokee

 Service Manual

Wiper and washer systems » Description and operation
Wiper motor

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. A reinforcement and stud plate with a rubber-isolated mounting bracket extends from the cowl plenum side of the dash panel to the motor mounting bracket to provide additional support.

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 linkage and pivot module unit must be replaced. The reinforcement bracket and stud plate are available for service.

REAR

The rear wiper motor is secured to a bracket that is fastened to the liftgate inner panel, below the liftgate glass and behind the liftgate trim panel. The motor output shaft passes through the liftgate outer panel where a rubber gasket and plastic bezel unit, and a nut seal and secure the unit to the liftgate outer panel. The rear wiper arm is secured directly to the motor output shaft with a nut.

The rear wiper motor unit provides three operating modes:

•  Constant wipe that operates when the rear wiper switch is turned to the On position.
•  Constant wipe that operates when the rear washer switch is depressed.
•  A park mode that operates the wiper motor until the blade reaches its park position when either the rear wiper switch or the ignition switch is placed in the Off position.

The rear wiper motor cannot be repaired. If faulty or damaged, the entire rear wiper motor assembly must be replaced.

Wiper arm and blade

Wiper linkage and pivot

Wiper motor

Wiper switch and washer switch

Washer reservoir

Washer pump

Washer fluid level sensor

Washer nozzle and plumbing