199001275 - E3021 REARSCREEN WASH/WIPE DESCRIPTION

DESCRIPTION

When the rearscreen wiper ring nut located on the right steering column switch unit lever is moved to the ON position, the rearscreen wiper is activated in one of the following modes:- intermittent: with a pause of 2.7 secs. between one stroke and the next- subject to the windscreen wiper (if there is a simultaneous windscreen/rearscreen wiper request): synchronous operation at half the frequency of the windscreen wiper- continuous: if reverse gear is engaged.

With the windscreen wipers working, if reverse gear is engaged, the rearscreen wiper is automatically activated: this function is managed by the Body Computer, which receives information from the engine control unit via the CAN network    See E2022 REVERSING LIGHTS

Pushing the right steering column switch unit lever activates the rear washing. Keeping the lever pushed for more than 0.5 secs automatically activates the rearscreen wiper at the continuous speed.When the control is released there are a further 3 strokes to clean the rearscreen plus another one 6 seconds later (to remove any drips).If the rearscreen wiper was already activated before the washing command using the lever, the washing logic is only effective for activating intermittent operation.The rearscreen washer circuit is protected by a special fuse located on the Body Computer. The rearscreen wiper and rearscreen washer may be operated by a supply that is ignition-operated except during start-up(INT/A).