Bosch Me20: Pinout Verified
Engine timing relies entirely on the integrity of the signals passing through Plug C. Shielded wiring is heavily utilized here to prevent electrical noise from distorting the sensor readings. Crankshaft Position Sensor (CKP) Signal (+) Pin 2: Crankshaft Position Sensor (CKP) Ground (-) Pin 3: Camshaft Position Sensor (CMP) Signal Pin 4: Engine Coolant Temperature (ECT) Sensor Signal Pin 5: Sensor Ground Reference (5V loop) Pin 10: Knock Sensor 1 Signal Pin 11: Knock Sensor 2 Signal Plug D: Actuators, Fuel Injectors, and Throttle Body
This often requires unsoldering the chip, reading its memory with a programmer (like XPROG), and writing modified data to specific memory addresses. Emulator Integration: Some technicians use the Julie™ Emulator
Before connecting any sensors or actuators, it's best to first test the power supply and ground pins (pins 42-48 for power and 43-46 for ground). Use a multimeter to check for the correct voltage and a solid ground connection. bosch me20 pinout verified
The Bosch ME20 is a popular engine control unit (ECU) used in various vehicles. For enthusiasts, tuners, and DIYers, understanding the ME20's pinout is essential for modifying, tuning, or even just troubleshooting the engine. After extensive research and verification, we're pleased to provide a comprehensive guide to the Bosch ME20 pinout.
Working on a Mercedes IMMO off project or a custom tune? We've verified the pinout for the classic ME2.0. Whether you're using a Julie Emulator or bench-flashing with Trasdata, getting the power pins right is the first step. KA2, KB3, KB4 = +12V K-Line = Pin 28 Engine timing relies entirely on the integrity of
The pinout provided here is verified by Bosch, but it is your responsibility to confirm that it matches your exact ECU and vehicle. Incorrect wiring can cause ECU failure, fire, or other damage.
This verified pinout has been used successfully for: Connect wires (Red/Orange) to pins KB3
Ensure your power source is delivering at least 12.4V under load. Low voltage stalls the boot process.
Connect wires (Red/Orange) to pins KB3 , KB4 , and KA2 .
