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

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


Function requirements, general
^ C. 15R On
^ Combination switch (S4) in position "3" or "4"
^ Vehicle speed reduction from v > 6 km/h to v < 3 km/h

Automatic wiper speed reduction, general
At low speeds a lower quantity of moisture is assumed on the windshield, therefore the front SAM control unit with fuse and rela module (N10/1) activates the automatic speed reduction of the wiper system

The automatic wiper speed reduction function consists of 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 front SAM control unit recognizes a vehicle deceleration of v > 6 km/h to v < 3 km/h, the wiping speed of the wiper motor (M6/1) is switched back one stage via the wiper/inside rearview mirror LIN (LIN 2).

The electronic ignition lock control unit (N73) transmits circuit status c. 15 to the front SAM control unit via the interior CAN (CAN B).
The instrument cluster (A1) transmits the vehicle speed information to the front SAM control unit via the interior CAN.
The steering column tube module control unit (N80) directly reads in the position of the combination switch and transmits it to the front SAM control unit via the chassis CAN (CAN E).

Function sequence for deactivating automatic wiper speed reduction
The wiper motor is actuated at the wiper speed set before activating the automatic speed reduction function of the wiper system if one of the following events occur:
- Vehicle speed v > 6 km/h
- Changing wiper speed
- Activating touch wiping function
- Activating wash function