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Comprehensive Bosch Motronic M3.3 (HW 0261203075 : M3 E36 3.0L Euro)

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    Comprehensive Bosch Motronic M3.3 (HW 0261203075 : M3 E36 3.0L Euro)

    Hi everybody,

    I've started the disassembling of a Bosch Motronic M3.3 binary (HW 0261203075 & SW 1267358585) because I would like to understand this engine management system. I am working on the first 128kb of the 27C256 EEPROM (see my link). I don’t have the second 128kb of the EEPROM and I don’t know if there are information in this second part.


    https://1drv.ms/u/s!AIYWDjVCL5J4gSI

    I chose the INTEL 80196 processor. My problem is that I don’t find addresses of data in the program (data space starts at 0xC800). I tried to use different offsets but still don’t understand how data is used in the program. Maybe someone has already worked on this ECU and would help me ?
    Click image for larger version

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    https://www.youtube.com/channel/UCwN...zf45mXp6PDOCzA

    #2
    I'd suggest starting on s/w 357934, it's essentially the same thing, but the non EWS version.
    Granted, you might find a way to disable the immobiliser, but overall the earlier versions without it would make it a little more universal.

    Comment


      #3
      Originally posted by TheEnd View Post
      I'd suggest starting on s/w 357934, it's essentially the same thing, but the non EWS version.
      Granted, you might find a way to disable the immobiliser, but overall the earlier versions without it would make it a little more universal.
      Also try to disassemble the 357934 & 357081 SW but still don't find data offsets in the disassembled program code...
      https://www.youtube.com/channel/UCwN...zf45mXp6PDOCzA

      Comment


        #4
        Nobody tries to disassemble this DME ?
        https://www.youtube.com/channel/UCwN...zf45mXp6PDOCzA

        Comment


          #5
          olza good to see you ! Do you try to disassemble this ECU ? I would need some help to start. Thanks
          https://www.youtube.com/channel/UCwN...zf45mXp6PDOCzA

          Comment


            #6
            I’ve tried with the same results unfortunately

            Comment

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