Leave a comment below. Disclaimer: Pin assignments can vary by vehicle manufacturer. Always confirm with factory wiring diagrams for your specific chassis.
If you’re deep into the world of Bosch Motronic M1.7 or M1.5.4 ECUs, you’ve likely come across the 0 261 204 17C61 (commonly shortened to 17C61). This ECU is a staple in many ’90s and early 2000s European vehicles—most notably certain Alfa Romeo, Fiat, Lancia, and early BMW models. 17c61 ecu pinout
Whether you’re reviving a classic Fiat Coupe or retrofitting Motronic into a project car, keep this pinout handy – and always double-check with a multimeter before applying power. Leave a comment below