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Thread: Delphi MT88 PCM Bench Harness Info Etc

  1. #1
    New Member
    Join Date
    Mar 2009

    Default Delphi MT88 PCM Bench Harness Info Etc

    I ended up with this pcm (see pics) running a fairly new big block. year model 2017.
    The very limited info I could find about this pcm seems it was also used on some GM crate engines etc.
    I am hoping to make an information thread. As well as a bench harness to read it "hopefully"
    Feel free to add info if you know anything about these pcms.
    Click image for larger version. 

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    I tried this setup with no luck
    J1-19=battery pos
    J1-20=battery pos
    J1-43=can low
    J1-29=can high
    J2-13=switched 12v+
    J2-28=switched 12v+
    J2-73= gnd

  2. #2
    Forum tyhee Site Admin GMPX's Avatar
    Join Date
    Apr 2003


    These ECM's are not running any software like what GM Delphi ECM's have, many of them use some form of J1939 comms (like the MEFI ECM's did), sorry but EFILive probably will not even talk to this ECM even if you get the bench harness wired up correctly.
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.

  3. #3
    New Member
    Join Date
    Mar 2009


    Thanks GMPX, I was thinking since it has similar plugs to a e67 either converting it or using a whatever pcm the gas 6.0's uses in the newer trucks. I was cross referencing wiring vs an L96 pcm pinout and so far a lot of things are similar.
    Last edited by xx_ED_xx; April 20th, 2019 at 11:00 AM.

  4. #4
    Junior Member
    Join Date
    Mar 2009


    IF you need any info on these controllers, give me a call as we have used these. Steve 909 910 3867

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