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

GF82.30-P-3008CA Wiper Start Suppression Function
MODEL 207.3/ 4

Function requirements, general
^ Circuit 15R ON
^ Vehicle speed v < 3 km/h
^ Combination switch (S4) in position "1" or "2"
^ Rain/light sensor (B38/2) detects wetting of the windshield
The circuit status of circuit 15R is transmitted by the electronic ignition lock control unit (N73) via interior CAN (CAN B) to the front SAM control unit with fuse and relay module (N10/1).

Wiper start suppression, general
The wiper start suppression is intended to prevent the driver or front passenger from being sprayed with water from the windshield when getting in or out as the result of an initiated wipe operation.
The wipers remain in the park position despite an actuated manual or automatic wipe request.

Wiper start suppression function sequence
If a door is opened while a wipe cycle is underway, the front SAM control unit interrupts the wiper motor (M6/1) actuation over the wiper/inside rearview mirror LIN (LIN 2).
The instrument cluster (A1) transmits the vehicle speed information to the front SAM control unit via the interior CAN. The steering column tube module (N80) directly reads in the switch position of the combination switch (S4) and transmits it to the front SAM control unit via the chassis CAN (CAN E).
Opening the left front door is recognized by the status of the left front door rotary tumbler switch (A85s1) which is read in by the left front door control unit (N69/1).
Opening the right front door is recognized by the status of the right front door rotary tumbler switch (A85/1s1) which is read in by the right front door control unit (N69/2).
The rain/light sensor data is read by the front SAM control unit via the wiper/inside rearview mirror LIN.
The front SAM control unit reads in all relevant information, evaluates it and interrupts actuation of the wiper motor. An already started wiping procedure is not interrupted immediately. The wipers continue to move to the park position.
The wiper start suppression is deactivated under the following circumstances:
- Vehicle speed V greater than or equal to 3 km/h
- Combination switch in position "3" or "4"
- Touch wiping or wash function activated
- Driver and passenger door closed
- Transmission selector lever in position "D" or "R" (with transmission 722)
- Clutch operation (with transmission 711, 716)
- Change from circuit 15C to circuit 15R
If no valid selector lever positions are available with circuit 15R, "N" will be sent constantly.
The selector lever position is only available as of circuit 15 On.
Wiper start-up suppression is not canceled by the selector lever position with circuit 15R.
The steering column tube module control unit directly reads in the position of the combination switch and transmits it to the front SAM control unit via the chassis CAN.
The electronic selector lever module control unit (N15/5) (with transmission 722) sends the status of the transmission selector lever position over the drive train CAN (CAN C).
The signal for the selector lever position is sent by the electronic selector lever module control unit over the drive train CAN to the CDI control unit (N3/9) (for diesel engine) or the ME-SFI [ME] control unit (N3/10) (for gasoline engine). The CDI control unit or the ME-SFI [ME] control unit sends the signal to the front SAM control unit via the chassis CAN.
The signal for operating the clutch is detected by the clutch pedal switch (S40/3) (for transmission 711, 716). The status is read in by the CDI control unit or the ME-SFI [ME] control unit and sent to the front SAM control unit via the chassis CAN.