Vehicles With Data Bus: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 Volkswagen EuroVan, 2002 Volkswagen EuroVan, 2001 Volkswagen EuroVan, 2000 Volkswagen EuroVan, and 1999 Volkswagen EuroVan. However, it is still accessible from the selected car via links, so may be relevant.
Comprehensive information on the "data bus" is given in self study program No. 186.
The automatic transmission control module sends signals into the data bus and uses signals from it. It exchanges signals (information) with other control modules.