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Thread: Corvette CCM Reverse Engineering Anyone?

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  1. 10-26-2021 #11
    spfautsch
    spfautsch is offline
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    Quote Originally Posted by NomakeWan View Post
    Turns out it's both START and RUN. E4 is RUN only.
    The FSM specifies that E5 / IGN1 is hot in start and run, and that E4 / IGN3 is hot in run only. This implies E4 is not hot in start / cranking but I haven't tested in-car to verify.

    Edit: On my test bench setup I was able to connect with eehack and / or read with flashhack with either E4 or E5 connected with a 1333 and 8051 PCM. Though I wasn't paying any attention to the CCM broadcast / polling traffic and responses.

    Dammit, for some reason I'm not getting email notifications on new posts.

    Steveo I'm too lazy to lookup calids - what year / type bin do you have on the PCM?
    Last edited by spfautsch; 10-26-2021 at 03:22 AM.
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