GF82.30-P-3008RI Wiper Start Suppression Function

GF82.30-P-3008RI Wiper Start Suppression Function

General function requirements
^ C. 15R On

Wiper start suppression, general
The wiper start suppression function prevents the wiper motor (M6/1) from being actuated even when a wiper request is present.

The wiper start suppression function comprises the following subfunctions:
^ Function sequence for wiper start suppression activation
^ Function sequence for wiper start suppression deactivation

Additional function requirements for wiper start suppression activation

^ Vehicle speed v < 5 km/h and
^ Driver/front passenger door open and
^ Combination switch (S4) in position "1"
^ Wiper motor in park position

Function sequence for wiper start suppression activation
Opening the left door is detected via the left door contact switch (S17/3) and opening the right door is detected via the right door contact switch (S17/4) and then read in by the rear SAM control unit (N10/8).

This information is then sent to the driver SAM control unit (N10/10) via the interior CAN. The driver SAM control unit evaluates these signals and interrupts actuation of the wiper motor. The wiper remains in the park position.

The driver SAM control unit receives the vehicle speed signal from the instrument cluster (A1).
The position of the combination switch is detected by the steering column tube module (N80) and read in by the driver SAM control unit via the interior CAN.

Opening the driver/front passenger door does not interrupt wiper operation that is currently in progress. The wipers move to the park position.

Additional function requirements for wiper start suppression deactivation
^ Wiper start suppression activated

Function sequence for wiper start suppression deactivation
Actuation of the wiper motor takes place once the wiper startup suppression has been activated by one of the following events:
- Vehicle speed v > 8 km/h
- Combination switch in position "2" or "3"
- The electronic selector lever module control unit (N15/5) transmits an engaged gear range

The engaged gear range is transmitted by the electronic selector lever module control unit via the engine compartment CAN. The electronic ignition switch control unit (N73) routes this signal from the engine compartment CAN to the interior CAN, where it is then read in by the driver SAM control unit.