Motor, Wiper: Description: Rear
The rear wiper motor (3) is concealed behind the lower liftgate inside trim panel on the liftgate inner panel below the liftgate glass near the center. The threaded and tapered end of the motor output shaft (1) that extends through the liftgate glass to drive the rear wiper arm and blade is the only visible component of the rear wiper motor. A rubber grommet is engaged within the output shaft clearance hole of the liftgate glass and seals the output shaft housing where it passes through the glass. An integral connector receptacle (4) connects the rear wiper motor to the vehicle electrical system through a dedicated take out and connector of the liftgate wire harness. The rear wiper motor consists of the following major components:
- Bracket (2) - The rear wiper motor bracket consists of a molded plastic mounting plate for the wiper motor that is secured with screws to the wiper motor transmission housing. The bracket is secured by three screws through a weighted damper and three rubber isolators (5) to three mounting points that are integral to a stamped metal bracket welded onto the liftgate inner panel.
- Damper - A heavy, cast metal damper is secured to the liftgate inner panel by the same three screws that secure the rear wiper motor bracket to the liftgate inner panel. The damper has nothing to do with rear wiper or wiper motor operation. It is only intended to reduce harmonic noises that can be produced by the closed liftgate assembly during normal vehicle operation.
- Motor - The single-speed permanent magnet rear wiper motor is secured to the rear wiper motor bracket. The wiper motor includes an integral transmission, the motor output shaft, a park switch and an integral connector receptacle. An automatic resetting circuit breaker and an internal clutch mechanism protect the motor from overloads.
The rear wiper motor cannot be adjusted or repaired. If any component of the motor is ineffective or damaged, the entire rear wiper motor unit must be replaced. The motor output shaft grommet, the mounting hardware the damper and the liftgate glass are available for individual service replacement.