If you are troubleshooting sensor issues, here are the verified signals for the most common failures: Pins 14 & 15. MAF Sensor Signal: Pin 11.
Check the full verified diagrams on Bosch Me20 Verified for high-res layouts. Option 3: The "Tuner Pro" (Best for Instagram/Blog)
When verifying pinouts for swapping ECUs:
Section 3, pins 5, 6, 7, and 8 control the fuel injectors; Section 4, pin 12 controls the fuel pump relay.
: Repair shops use verified pinouts to power the unit outside the vehicle to check for sensor signal issues or communication faults.
This verified pinout has been used successfully for: