Wipers and washers (Description): Description and operation (page 2 of 3)

The wiper blades are attached to the wiper arms with a clips that allow the blade to pivot. Each wiper blade comprises a number of levers and yokes to which the rubber wiper is attached. The levers and yokes ensure that the pressure applied by the arm spring is distributed evenly along the full length of the blade. The rubber wiper is held in the yokes by a pair of stainless steel strips which also contribute to the even distribution of spring pressure along the blade. The driver's side wiper blade is fitted with an aerofoil which presses the blade onto the screen at high speed. This prevents the blade from lifting off the screen and maintains the wiping performance.

Front wash/ wipe switch

The front wash/ wipe switch is located on a stalk on the RH side of the steering column and allows the driver to control the operation of the front wipers and the front washer pump.

Operating the washer switch provides battery voltage from fuse 19 in the passenger compartment fusebox to the washer pump motor.

Operating the flick wipe function provides battery voltage from fuse 19 in the passenger compartment fuse box to the high-speed brushes of the wiper motor.

Operating the intermittent function provides a battery voltage signal to the BCU. The BCU determines the wipe interval from the variable delay switch and signals the IDM to activate the front wiper relay, which provides battery voltage to the wiper motor.

Operating the low-speed function provides battery voltage from fuse 19 in the passenger compartment fuse box to the low-speed brushes of the wiper motor.

Operating the high-speed function provides battery voltage from fuse 19 in the passenger compartment fuse box to the high-speed brushes of the wiper motor