Patriot 4WD L4-2.4L VIN W (2007)
Windshield Washer Pump: Description and Operation
Description
DESCRIPTION
The washer pump/motor unit is located on the top of a sump area of the washer reservoir, on the forward side of the reservoir ahead of the right front
strut tower in the engine compartment. A small permanently lubricated and sealed reversible electric motor (3) is coupled to the rotor-type washer pump
(4). The use of an integral valve body (7) allows the washer pump/motor unit to provide washer fluid to either the front or the rear washer systems,
depending upon the direction of the motor/pump impeller rotation.
An inlet nipple (6) on the pump housing passes through a rubber grommet seal/filter screen installed in a dedicated mounting hole of the washer reservoir
sump. The filter screen prevents most debris from entering the pump housing. When the pump is installed in the reservoir the one barbed outlet nipple (5
and 8) on the pump valve body housing connects the unit to the front washer hose, and the other barbed outlet nipple connects the unit to the rear washer
hose.
The washer pump/motor unit is retained on the reservoir by the interference fit between the pump inlet nipple and the grommet seal, which is a light
press fit that allows for mounting of the washer pump without the use of fasteners. An integral connector receptacle (1) on the top of the motor housing
connects the unit to the vehicle electrical system through a dedicated take out and connector of the engine compartment wire harness.
The washer pump/motor unit cannot be repaired. If ineffective or damaged, the entire washer pump/motor unit must be replaced.
