Cruise control and engine brake

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Kw t 660, Aug 6, 2017.

  1. Kw t 660

    Kw t 660 Bobtail Member

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    I have a 2013 t660 with a isx with a pto. I was at a customer unloading and using the pto when my alternator went out. After replacing the alternator the cruise control, engine brake and horn have not worked. Checked fuses and power and all including the clock spring still not finding the problem any ideas. Also have check clutch switch but that wouldn't stop the horn from working. Power at horn relay.
     
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  3. Jace379

    Jace379 Light Load Member

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    Does it have a smart wheel
     
  4. Kw t 660

    Kw t 660 Bobtail Member

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    Yes it has smart wheel
     
  5. Jace379

    Jace379 Light Load Member

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    We have had problems with those things ever since they were introduced in the 90s. I would start there.
     
  6. Jace379

    Jace379 Light Load Member

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    I'm not sure about the newer trucks but the old ones had all the wiring behind the dash for dash switches so it was still a pain but it's not impossible if the new ones have the wiring there already and kenworth sells the dash panel with the switches in it but there expensive.
     
  7. Kw t 660

    Kw t 660 Bobtail Member

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    So more than likely the wheel itself went bad?
     
  8. Jace379

    Jace379 Light Load Member

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    That's where I would look yes.
     
  9. Kw t 660

    Kw t 660 Bobtail Member

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    Ok thanks for the help I'll see what I can do to get rid of the wheel
     
  10. Jace379

    Jace379 Light Load Member

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    Could be in the little smart wheel computer too. Are you sure the clock spring is ok. That's usually the problem our mechanic said.
     
  11. Kw t 660

    Kw t 660 Bobtail Member

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    Aug 3, 2017
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    Yes I took wheel of and have current thru all wires
     
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