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ECM shut down

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Rock hauler, Aug 19, 2013.

  1. Aug 19, 2013 #1
    Rock hauler

    Rock hauler Light Load Member

    264
    54
    Nov 26, 2008
    Deridder La.
    0
    07 MXS will not restart after you pull battery's off, when you reconnect you have to call someone with a cat computer to reboot or something to get it to start. anyone know what this is and how to stop it. thanks
     
    Rock hauler, Aug 19, 2013
    Rock hauler, Aug 19, 2013
    #1
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  3. Aug 19, 2013 #2
    Heavyd

    Heavyd Road Train Member

    7,749
    6,184
    Feb 4, 2009
    0
    ECMs do not lock up like that. Chances are the ECM power feed harness got missed when the batteries were disconnected. The ECM power harness is usually connected directly at the batteries. Check for any wires that didn't get installed, hanging in behind the battery box hiding from view. If they are connected, make sure the polarity is correct. There will also be an in-line fuse somewhere between the battery connection and ECM, look for it and make sure it isn't blown.
     
    Heavyd, Aug 19, 2013
    Heavyd, Aug 19, 2013
    #2
    cetanediesel Thanks this.
  4. Aug 20, 2013 #3
    Rock hauler

    Rock hauler Light Load Member

    264
    54
    Nov 26, 2008
    Deridder La.
    0
    every time you take the battery's of this truck you have to put a computer on it and they do something with the computer to get it to restart, no wires no fuse, not anything else. today they borrowed another ECM to get it home. Taking it to cat tomorrow maybe they will tell us what they do this time. Thanks Heavyd
     
    Rock hauler, Aug 20, 2013
    Rock hauler, Aug 20, 2013
    #3
  5. Aug 20, 2013 #4
    manasteel

    manasteel Light Load Member

    124
    32
    Sep 10, 2012
    0
    the ecm needs battery power at pin 52 and pin 53. battery ground at pin 65 and 67. key power at pin 70. never heard of any shut down mode from the batteries being disconnected. please let us know what is being reset
     
    manasteel, Aug 20, 2013
    manasteel, Aug 20, 2013
    #4
  7. Aug 20, 2013 #5
    Heavyd

    Heavyd Road Train Member

    7,749
    6,184
    Feb 4, 2009
    0
    Yah, that's weird, never heard of that... like, ever! Love to hear what they find too!
     
    Heavyd, Aug 20, 2013
    Heavyd, Aug 20, 2013
    #5
  8. Aug 22, 2013 #6
    claytonr1973

    claytonr1973 Light Load Member

    266
    289
    Jun 1, 2008
    miami,ok
    0
    Is there a battery in the ecm for memory like what the motherboard on a computer has? That would make the ecm effectively bad. I don't know, just throwing it out there. Never heard of this problem. If you can put another ecm on and get it to run it sounds like an ecm problem.
     
    claytonr1973, Aug 22, 2013
    claytonr1973, Aug 22, 2013
    #6
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