The Bosch ME 2.0 (Motor Electronics) is a legacy Engine Control Unit (ECU) primarily found in mid-to-late 1990s Mercedes-Benz vehicles, such as the W210 E-Class and W202 C-Class
Pin verification checklist (practical)
Identify connector orientation and pin numbering on your ECU (photo or label).
With battery removed, ohm-pin from ECU ground pins to chassis to confirm ground map.
Reconnect battery; measure constant +12V and switched +12V pins.
Key ON: measure 5V reference at sensors.
Crank: probe CKP/CMP for pulse; verify injector and coil driver signals with non-invasive tools (scope).
Confirm O2/heater, IAC, and fuel pump outputs activate when commanded (use fused test lamp or current-limited bench supply).
Immobilizer delete bench flashing (via CAN pins)
Wiring loom repair on Citroën Xsara and Fiat Stilo
For your workshop wall – Verified ME20.4/6:The Bosch ME 2
The Bosch ME20 ECU is a widely used engine control unit found in numerous vehicles, including passenger cars, trucks, and industrial equipment. Its versatility, reliability, and flexibility have made it a favorite among vehicle manufacturers. However, for those looking to modify or tune their engine, accessing the ME20's internal workings requires a deep understanding of its pinout. Identify connector orientation and pin numbering on your
High and Low lines used for inter-module communication in original vehicle setups. Common Applications
