Windshield washer, function - GF82.35-P-3002S

MODEL 215, 220 

Windshield washer function 

The windshield is wiped while water is sprayed  .

Function sequence 

• Press combination switch (S4)  beyond catch point
• The signal from the combination switch (S4) is read in by the jacket tube module (N80)  and the corresponding message is transferred to the CAN  bus (passenger compartment),
• The left front SAM control module (N10/6) and right front SAM control module (N10/7)  receive this message.
• The left front SAM control module (N10/6) starts the wiper motor (M6/1)  , the right front SAM control module (N10/7) actuates the windshield washer fluid pump (M5/1)  :
  • The windshield washer fluid pump (M5/1) runs as long as the combination switch (S4) is actuated.
• When the combination switch (S4) is released, the wiper motor (M6/1) continues to run to wipe off the remaining water. The number of wiping cycles depends on the time the combination switch (S4) was activated:
  • If actuated less than 1 second the wiper wipes one more time,
  • If actuated longer, 3 wiping cycles are completed.
• After completion of the wiping operation the wiper motor (M6/1) is decelerated  .

The wiper motor (M6/1) runs in stage 1 for washing.

Wiping is accomplished at speed 2 only when the wipers were simultaneously set to speed 2.

Control of washer pump 

The windshield washer fluid pump (M5/1) is actuated directly by the right front SAM control module (N10/7). During the washing operation the windshield washer fluid pump (M5/1)  is connected to ground by an electronic switch (transistor) in the control module.

In the event of an overload the pump is switched off by the right front SAM control module (N10/7).