Note: Always look for the 10-digit Bosch part number (usually starting with 0 261 ... for gasoline or 0 281 ... for diesel) stamped on the aluminum casing to find the exact matching datasheet. 3. How to Read a Pinout Diagram
Look at the physical sticker on the metal ECU casing. Bosch numbers always start with a 0 261 XXX XXX (gasoline) or 0 281 XXX XXX (diesel). Bosch Ecu Pinout Datasheet
Bosch pinouts are structured logically, but reading them requires attention to orientation and numbering systems. Visual Orientation Datasheets display diagrams from one of two perspectives: Note: Always look for the 10-digit Bosch part
Terminals like Terminal 30 (+12V permanent), Terminal 15 (switched ignition), and Terminal 31 (chassis ground). Bosch pinouts are structured logically, but reading them
[ME7.x] ----------> [MED9.x / EDC16] ----------> [MED17 / EDC17] ----------> [MD1 / MG1] (Early 2000s) (Mid 2000s, K-Line/CAN) (TriCore, Bootmode) (Modern, Aurix, Lock)
When you open a Bosch ECU datasheet, first highlight three things:
The datasheet’s electrical characteristics table says: