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Bosch Motronic Info

Motronic ECU Pinout for the 3B Engine

IMPORTANT - The information on this page is ONLY applicable to the 3B engine. It is NOT transferable to the ABY engine. 

The image below depicts the pin locations as if viewing the connector on the ECU.

3B ECU pinput

The image below depicts the 3B ECU pinout when viewing the cable assembly.

ECU Cable

The following table defines the functionality of each of the 55 pins on the 3B Motronic ECU. 

Boot Camp Support Software Today

If you own an M1, M2, or M3 Mac, stop looking for Boot Camp. It does not exist. The ARM architecture of Apple Silicon cannot run x86 Windows natively.

Do not try hacky solutions like “Boot Camp Assistant for M1.” They will brick your macOS volume. boot camp support software

Boot Camp Support Software is a marvel of cross-platform engineering—when it works. It allows a 2019 MacBook Pro to run AutoCAD or Cyberpunk 2077 with respectable performance. But it is also fragile, abandoned by Apple (no major updates since 2020), and actively undermined by Microsoft’s update cadence. If you own an M1, M2, or M3 Mac, stop looking for Boot Camp


Last Updated 12th May 2002