no datalink

Discussion in 'Ask An Owner Operator' started by guyan, Sep 13, 2011.

  1. Sep 13, 2011 #1
    guyan

    guyan Bobtail Member

    1
    0
    Sep 13, 2011
    0
    I get a message on the display NO DATALINK ACTIVITY. also all the related gauges and the speedo does not work anymore. The truck is a 2005 Century Class with detrot engine. I checked all connections and fuses and all seems to be OK. Anybody can help? Thanks
     
    guyan, Sep 13, 2011
    guyan, Sep 13, 2011
    #1
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  3. Sep 13, 2011 #2
    Frenzy

    Frenzy Medium Load Member

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    Mar 24, 2008
    Seattle, WA
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    Shop time. The J1708 bus is dead. It could be the instrument panel, the truck ecu, or the engine ecm or a short in the cable "somewhere".

    The instrument panel does not read the sensors directly. That information is transmitted over the J1708 bus, and most of that information comes from the ECM.

    The first thing to try is hooking the truck up to the diagnostic computer to see if it can talk to the ECM and ECU. No talk would mean likely a shorted or open j1708 cable.

    Some talk would point to a bad device on the cable. If it talks with the ECM but not with the ECU then the ECU is likely bad.

    Good luck, if it were me, I would get the truck to a Freightliner shop.
     
    Frenzy, Sep 13, 2011
    Frenzy, Sep 13, 2011
    #2
  4. Aug 12, 2012 #3
    bobeagle

    bobeagle Bobtail Member

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    Jan 15, 2011
    PLANO,TX
    0
    did yu try cleaning harness/wires/connections around battery. mine too was showing NO DATALINK. If still starting, then I guess it'd begood take that advise, GET DIAGNOSTICS FROM FREIGHTLINER SHOP. good luck
     
    bobeagle, Aug 12, 2012
    bobeagle, Aug 12, 2012
    #3
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