While pin configurations vary significantly between generations, most Motronic units organize connections into three primary categories:
Pinouts are typically categorized by the Motronic version number, which indicates the system's complexity: Motronic 1.1 / 1.3 (Common in BMW E30) bosch motronic ecu pinout
Have a specific Motronic version you are working on? Leave the part number in the comments, and we will help decode its pinout. bosch motronic ecu pinout
Open the ECU. Look for the white Bosch sticker. It will read something like: 0 261 200 173 (BMW M1.3) or 0 261 203 165 (VW M1.7). Write this down. bosch motronic ecu pinout