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Thread: Replacing Flash, now PCM won't turn on?

  1. #1
    Lifetime Member N0DIH's Avatar
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    Default Replacing Flash, now PCM won't turn on?

    I just off board flashed the 28F400 for my 9354896 PCM and my 0411 PCM, and neither will turn on. I have tried several different flash files, nothing, it won't turn on.

    Anyone know if there is any sort of strange security mode that I may have triggered?

    I am trying to fix a PCM for someone that when the PCM was flashed, it bricked the PCM. It isn't making sense.

    I have tried to read the PCM with Winflash and EFILive Scan (using my Autotap cable), no dice.
    I owned a Ford once, ONCE.......

  2. #2
    Lifetime Member swingtan's Avatar
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    Any chance you damaged the board when removing the chip? What about solder shorts on the legs? I take it you have done this before....

    Simon.

  3. #3
    Lifetime Member N0DIH's Avatar
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    Not saying no way, but 3 PCM's, and 4 different 28F400's, all doing the exact same thing. I am puzzled. If I connect my 2000 Park Ave Ultra stock PCM up, 09380717 PCM, all is fine. So my interface is ok. It is like the PCM doesn't want to boot.

    I put in code that I personally read off a 28F400, and have program that code into a PCM that a person is using now, so the code is good (good enough he was able to do a full flash after I sent it to him).

    My eyes certainly aren't what they used to be, and I don't have a microscope like I used to have, but the part is going on nearly as clean as GM's supplier for it.

    The burner is reading the 28F400's ok, not seeing issues on that side.
    I owned a Ford once, ONCE.......

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