Me20 Pinout Verified - Bosch

For bench testing, diagnostic communication (K-Line), or basic programming, the following connections are typically required: +12V Power : Connect to Pin 1 of Section 5. Ground (GND) : Connect to Pins 4, 5, and 6 of Section 5. K-Line (Diagnosis) : Pin 8 or 28 of Section 4. Ignition (Switch-on Signal) : Pin 24 of Section 4. Fuel Pump Relay : Pin 12 of Section 4. Main Relay : Pin 11 of Section 4. Key Technical Considerations Software Variations

No pinout was marked “verified” unless it matched all three sources and passed active signal testing. bosch me20 pinout verified