The following tables outline the typical pinout configuration for a Bosch ECU:
Search “0 261 204 755 pinout”. A top result from a tuning forum shows: Bosch Ecu Pinout Datasheet
Example: Instead of searching "Bosch 0 261 204 162," search "2001 Audi S4 Motronic ME7.1 pinout." Bosch Ecu Pinout Datasheet