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  1. #1
    Member
    Join Date
    Nov 2013
    Location
    Haines city Fl
    Posts
    1,906

    DDT ? for Don,Savage or Joe 2 questions

    2002 300x (0t652508)
    Can a DDT diagnose a bad ecu?
    Did Mercury come out with a new DDT for the 4 stroke or is it the same DDT with new software?
    Thanks for your time..

  2. Member
    Join Date
    Sep 2006
    Location
    Newnan, Georgia
    Posts
    1,209
    #2
    Not sure if it can find a bad ecu....but the ddt is now software based - laptop - the Mercury software is only available to dealers. You can buy aftermarket. Check Diacom. Maybe Don can help you with how to check your ecu. Please post what your engine is doing or not doing.