GF82.30-P-4006RI Wiper System Automatic Speed Reduction, Function

GF82.30-P-4006RI Wiper System Automatic Speed Reduction, Function
- except CODE (494) USA version

Function requirements, general
^ C. 15R On
^ Combination switch (S4) in position "2" or "3"
^ Speed reduction from v > 8 km/h to v < 5 km/h

Automatic wiper speed reduction, general
The automatic speed reduction is activated at a speed reduction of v > 8 km/h to v < 5 km/h, because at this speed the windshield is generally not as wet.

Automatic wiper speed reduction comprises the following subfunctions:
^ Function sequence for automatic wiper speed reduction, general
^ Function sequence for deactivating automatic wiper speed reduction

Function sequence for automatic wiper speed reduction, general
If the driver SAM control unit (N10/10) detects a speed reduction of v > 8 km/h to a speed v < 5 km/h, then the driver SAM control unit switches the wiper motor (M6/1) down by a stage.

Function sequence for deactivating automatic wiper speed reduction
Actuation of the wiper motor at the speed before automatic speed reduction is accomplished by one of the following events:
- Speed v > 8 km/h
- Changing wiper speed

The vehicle speed is transmitted by the instrument cluster (A1) via the interior CAN and read in by the driver SAM control unit.
The status of the combination switch is read in by the steering column tube module (N80) and transmitted to the driver SAM control unit via interior CAN. This then evaluates the signals and actuates the wiper motor accordingly.