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Thread: CM850 Support

  1. #21
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    Of coarse! That's understandable. Living in Maine we've got a ton of Lobster boats around and the QSL and QSB's are very popular. I should have a read from a QSB 330 over the next week or so. We'll see what that ecm has to say.
    While looking at the Cal ID from the QSL it's like a P2I file or something, I'm having a hard time figuring out how to get that file to open in Calterm. It's not like the later ecms that's for sure.
    Thanks again for the help.

  2. #22
    Lifetime Member GMPX's Avatar
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    P2I is the engine ID.
    It would have been nice when Cummins made these transitional changes if they changed the ECM model name too, maybe from CM850 to CM850B, or CM851 etc.
    Unfortunately the older style CM850 (released around 2002) and the new style CM850's (still going to this day) share the same part number, same ECM ID etc yet are very different when it comes to the code internally and mapping
    I no longer monitor the forum, please either post your question or create a support ticket.

  3. #23
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    CM850 QSB 5.9 355.ctz

    Here is another QSB read. This is from a 355hp 5.9 Marine Engine. I'll paste the OBD read as well below.
    Thanks,
    Dominic

    Description Value Units
    Engine Control Module #1 (ECM1)
    Description CM850 Cummins HD Diesel ECM
    VIN *****************
    ECM Name CM850
    ECM ID XX
    ECM Part Number 04921776
    ECM Serial Number 34251833 (last 8 digits only)
    Operating System 15010011 (last 8 digits only)
    Calbration ID Z90095.08
    Cal Verification Number $FFFFFFFF
    Engine ID E2I
    Engine Model *****************
    Engine Serial Number 46528616

  4. #24
    Lifetime Member GMPX's Avatar
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    Thanks Dom, should have an installable update very soon with all this CM850 stuff sorted out.
    I no longer monitor the forum, please either post your question or create a support ticket.

  5. #25
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    Did that last file that I posted have the same issues that the previous file did? Just curious if it was a marine thing with the 2mb flash.

  6. #26
    Lifetime Member GMPX's Avatar
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    Sure did, it was in fact the exact same operating system as the other file.
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  7. #27
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    Didn't even notice that! That's pretty interesting being that one engine is a 9 liter and one is a 5.9..I know the calibration is different but figured that they would have different os being such a spread on engine size. I should have a couple more reads over the next few months.
    Last edited by Dom_c13b; February 11th, 2019 at 01:59 PM.

  8. #28
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    Is the 850 editing support dead for good??

  9. #29
    Lifetime Member GMPX's Avatar
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    No, but it is not going in to V7 for editing, it will have to wait until the V8 editor is done (as we all four other HD ECM's of this era), sorry.
    I no longer monitor the forum, please either post your question or create a support ticket.

  10. #30
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    Hope it comes out any soon. I wouldn't even mind beta testing it'll save me the hassle of an entire ecm swap and stuff

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