Many no-starts trace to pin 7 (main relay control). If the ECU does not ground pin 7, the DME relay never powers injectors/coils. Jump relay temporarily to test.
This guide is for informational purposes only and is not intended to be a substitute for professional advice or diagnosis. Always follow proper safety procedures when working with electrical systems, and consult a qualified technician if you're unsure about any aspect of the process. bosch motronic ecu pinout
Inputs varying voltage (0-1V for narrow-band, or current variance for wide-band) to monitor combustion efficiency. 3. Actuator Output Controls Many no-starts trace to pin 7 (main relay control)
System Architecture and Signal Analysis of Bosch Motronic Engine Control Units: A Technical Exegesis of Pinout Configurations bosch motronic ecu pinout
Motronic uses inputs from sensors like: