Bosch M797 Pinout Better Page

Remember that Pin 44 and Pin 63 both need power for the ECU to "wake up."

Before attempting any communication, you must establish stable power. Main Ground (Chassis) Pin 13: Main Ground (Logic/Sensors) Pin 44: Permanent +12V (Battery) Pin 63: Ignition +12V (Switch On) Communication Pins (K-Line) bosch m797 pinout better

The Bosch M7.9.7 uses an 81-pin connector system. It is physically divided into two main sections: a smaller 30-pin block and a larger 51-pin block. When looking at the ECU pins directly, numbering typically runs from left to right, top to bottom. Power and Ground Pins Remember that Pin 44 and Pin 63 both

To put the ST10F275 processor into "Boot Mode" for full firmware recovery or reading: bosch m797 pinout better

Ensure both Pin 12 and Pin 13 are connected to the negative terminal.