The engine control unit (ECU) is a common sight in late-90s Mercedes-Benz vehicles, such as the W202, W208, and W210 models. Verified pinouts for these units are often used by tuners and mechanics for "bench" work—reading data or disabling immobilizers using tools like the Julie Emulator. Key pin assignments for the Bosch ME2.0 include:
The ME20 relies on precise voltage signals to calculate fuel trims. bosch me20 pinout verified