Mercedes actros engine ECU faulty

Discussion in 'Trucks [ Eighteen Wheelers ]' started by ah fai, Mar 27, 2013.

  1. Pablo-UA

    Pablo-UA Road Train Member

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    It is Actros MPI. U can see it by VIN

    Problem is that engione wiring is bad. And may be starter lock out MOSFET is damaged inside ECM becouse of starter wiring. So MR unit reads no IMMO code, and FR too. Kl 50 wire is short to ground. But there are ways to bypass starter wiring to start this engine
     
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  3. 98989

    98989 Road Train Member

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    i see

    but generally i am talking that he does not provide enough informations about problem and this is not first time

    and i say i would not be surprised if in future topics he would not even note which truck have problem and not mention problem as well
     
  4. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
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    I am quite young and new in truck repairing industry, i spend a lot of time, money to study, buy diagnosis equipment, tools, and i have to take care my father workshop cause he is old.

    modernize truck really make me headache. hopefully can get some help in this forum.
     
  5. ah fai

    ah fai Light Load Member

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    and my language is not well.

    Hello Pablo,

    Ya, i have star diagnosis tools. what should i do with this??
     
  6. Cat sdp

    Cat sdp . .

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    Your English is ok, just try and give more information on the truck your having the problem with. Hopefully Someone can help you out...
     
  7. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
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    ok, got it. thanks for advice.
     
  8. mehdi350z

    mehdi350z Bobtail Member

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    May 22, 2013
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    hello,

    i have read your post and i have exactly the same problem with Actros truck, i have MR error 9964 9963, i have tested every thing but no way, engine does't start.
    please can you help me to solve this problem[FONT=Helvetica Neue, Helvetica, Arial, sans-serif], i should be grateful

    thank you very much,
    [/FONT]
     
  9. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
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    I have replace MR ECU (engine ecu) and problem solve..
     
  10. Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    look, problem is not in language we use, problem is different.
    For example - someone is ill, got a fever.... it is not diagnose! so U have to understand that I need problem descryption and list of fault codes, I need truck info, date of manufacture, configuration

    This problem with immo is related with starter lock out circuits, becouse mercedes engine ECU use the same wire (kl 50) for immo signal and starter actuation. If lock out circuit is short inside ECU - no immo code.

    US truckers never see this problem becouse no immo is used on freightliners. I used to add immobilizer in Columbia and it works fine!
     
    98989 Thanks this.
  11. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
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    Thanks a lot Pablo
     
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