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    Posted by Paul Rose on June 30, 2004, 10:28 pm, in reply to "Re: Re: BMW/1993/520i/E34/206S1/Siemens MS 40.1"

    Hi Anthony, a speed sensor won't stop communication with the ECU. Since 2 totally different tools won't communicate it perhaps gives a clue that the ECU has no power.

    Check pin 26 for permanant live
    Pin 54 for live from main relay
    Pin 28, 55, 34 and 6 for good earth.

    Good luck

    Paul

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