Wiper and Washer Systems: Description and Operation

Wipers/Washers

Windshield Washer Jet Assembly







The windshield wiper motor, with integral microswitch for overload protection, is mounted in the plenum below the windshield and is handed for market requirements. The vehicle has a conventional twin wiper arm system with synthetic rubber blades and wiper arm mounted windshield wash jets. Jets are designed to resist freezing, eliminating the need for heated nozzles. Wiper modes are 2-speed, flick wipe and six settings of intermittent wipe.

Screen wash tubing is supplied assembled in the wiper arm and is fitted to a connector which is part of the plenum cover assembly. The wipers park on the windshield. The washer fluid reservoir is located in the cavity formed by the front bumper, LH front valance and the front wing liner. The reservoir has a fluid capacity of 7 liters of liquid and is fitted with a low level sensor. When screenwash is selected, the wipers complete three cycles followed by a 4 second delay and a further cycle to clear residual fluid from the screen until either the switch is released or the ignition is moved from position II.

Headlamp Power Wash Jet Assembly (Retracted and extended)







Some markets and options have a headlamp telescopic power wash mounted below each lamp glass. These washers will operate in conjunction with the screen-washers, when the headlights are on dip or main beam, or daylight running is enabled, the washer fluid does not indicate low level, and the ignition switch is in position II.

When wash/wipe is selected and held, the headlamp wash pump is activated and sprays for 800 ms, waits 6 seconds and then sprays again. This spray is repeated after each six second interval until the switch is released or 20 seconds has elapsed. When the switch is released, further power wash cycles will be inhibited for the next 5 wash/wipe operations to conserve wash fluid.

All power wash fittings are snap fit, cover to jet, jet to headlamp, jet to hose. The wash/wipe system is operated from switches on the steering column via the Body Processor Module (BPM), part of the SCP network.