Rear Wiper Motor

Rear wiper motor





The DC motor contains two permanent magnets and a park switch. An earth braid attached between the motor casing and the brush pack is utilised to minimise radio interference during wiper functions.

The rear wiper switch provides an earth signal to the BCU, which determines the delay interval, if appropriate. The BCU then signals the IDM to activate the rear wiper motor relay, which provides power to the rear wiper motor.

To allow the rear wiper to park when the rear wiper is switched off, power flows through the park switch until a cam in the wiper motor assembly breaks the contact of the park switch. Triggering the park switch grounds the positive side of the wiper motor causing it to stop abruptly.