These inputs monitor engine metrics to calculate real-time fuel and ignition adjustments. Crankshaft Position Sensor (CKP) Signal Pin 34: Camshaft Position Sensor (CMP) Signal Pin 40: Mass Air Flow (MAF) Sensor Signal Pin 42: Engine Coolant Temperature (ECT) Sensor Signal Pin 45: Throttle Position Sensor (TPS) Signal 1
Verified pin 11 for the main relay and pin 12 for the fuel pump relay. bosch me20 pinout verified
These lines allow OBD2 scanners and flash tuning tools to establish a data link with the ECU. Pin Number Signal Name Description Primary diagnostic and flashing line ISO 9141-2 Pin 56 Wake-up/Initialization line (if applicable) ISO 9141-2 3. Essential Peripheral Links (For Engine Swaps) These inputs monitor engine metrics to calculate real-time
Whether you are troubleshooting a crank-no-start condition, retrofitting an engine into a custom chassis, or setting up a bench-flashing rig, having a verified pinout is critical. Wiring errors can permanently destroy the ECU’s delicate internal circuit board. Pin Number Signal Name Description Primary diagnostic and
: Unlike newer Bosch ME units (like ME2.8), the ME2.0 often requires physical chip desoldering (typically the 24C02 EEPROM) for specific coding or reset operations rather than a simple boot pin connection. Immobilizer Bypass
For flashing or reading the ECU on a bench (e.g., KESSv2, KTAG, Flex), you need to connect to these specific pins: Pin Number Description A12/A30 (or B2/B30) Main Ground (Negative) +12V B11 Permanent Positive (Terminal 30) +12V B12 Switched Positive (Terminal 15) K-Line B15 Diagnostic Communication CAN L - Varies, check OBD harness CAN H - Varies, check OBD harness