Windscreen Wiper Function
The driver operates the windscreen wiper switch (SWS) to initiate a wiper system function. The wiper switch is plugged directly into the Steering Column Switch Center Module (SZL).
The SZL module analyzes the signals from the wiper switch and calculates which wiper system function has been selected by the driver. That information is placed on the byteflight in the form of a message.
The Safety Information Module (SIM) receives the driver's instruction from the SZL and passes it on to the ZGM via the byteflight . The ZGM receives the message from the SIM and passes it on in its role as "gateway control unit" to the Wiper Module (WIM) via the K-CAN S. The wiper module performs the action requested by the driver (e.g. wipe or wash).