91 Volvo 960 B6304 Motronic 1.8

Discussion in 'Volvo 960' started by damosfiles, Nov 15, 2006.

  1. damosfiles

    damosfiles Guest

    Does anybody know how I can power up a Motronic 1.8 on my desk
    separated from the car without just creating smoke?

    By eprom emulator and home-made diagnose software I would like to
    figure out how the hardware works, and thereby be able to understand
    the original software and what the almost 80 different maps represent.

    Also does anybody know what serial protocol the volvo scan tool uses to
    read live data from this old non-OBDII ecu?

    By connecting to diagnose cable number 2 at the blink unit this is
    possible with the volvo tool.

    Does anybody know anything interresting about the Motronic 1.8?
    Like schematics, RAM addresses for inputs and outputs, meaning of
    bit-flags in the code, map axis descriptions, calculation formulas for
    map values to real values, tuned binaries, ....
    damosfiles, Nov 15, 2006
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  2. damosfiles

    damosfiles Guest

    It turned out to be important to connect all the ground and battery
    voltage pins.
    #19 GND Signal
    #24 GND Power
    #30 GND Sensor

    #18 +12V 30-feed
    #27 +12V 15-feed
    #37 +12V 15-feed from main relay. (This creates smoke if the others are
    not connected.)
    damosfiles, Nov 17, 2006
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  3. damosfiles

    finn Guest

    i am quite interested in seeing what you are doing, andgiving the ecu
    a closer look myself.

    so any further info (assuming you get it powered-up) would be awesome
    finn, Jan 2, 2007
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