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Detroit 60 2001 Columbia no cruise

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Transportauto, Oct 2, 2023.

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  1. Oct 2, 2023 #1
    Transportauto

    Transportauto Light Load Member

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    Detroit 60 Columbia no cruise, I can see the ecm is seeing the cruise and Jake switches correctly, I can see the park brake is switching in the ecm as well as the foot pedal for brake is working in the ecm. What in the world am I missing?
     
    Transportauto, Oct 2, 2023
    Transportauto, Oct 2, 2023
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  3. Oct 2, 2023 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    VSS Signal?
     
    Big Road Skateboard, Oct 2, 2023
    Big Road Skateboard, Oct 2, 2023
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  4. Oct 2, 2023 #3
    Transportauto

    Transportauto Light Load Member

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    Have yet to check that while driving however I can not rev it and let the Jake's bring it down also no high idle. These worked few months ago
     
    Transportauto, Oct 2, 2023
    Transportauto, Oct 2, 2023
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  5. Oct 2, 2023 #4
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Clutch switch then. You should be able to hear it click, you can also watch it on the laptop
     
    Big Road Skateboard, Oct 2, 2023
    Big Road Skateboard, Oct 2, 2023
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  7. Oct 2, 2023 #5
    Transportauto

    Transportauto Light Load Member

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    I didn't mention that sorry. Yes that is also working. I can see it with the laptop. Seems all is OK,
    Clutch switch
    Foot brake switch
    Park break switch
    Jake switches
    Cruise switches they all work.
    I'm missing something
     
    Transportauto, Oct 2, 2023
    Transportauto, Oct 2, 2023
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  8. Oct 2, 2023 #6
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    VSS signal is about all that's left then. VSS should ohm in the 700-1100 range IIRC.

    A loose output yoke can also allow the pulse wheel to stop moving long enough to interupt signal at the ECM, yet the speedo may not change.

    Should be able to shake the driveshaft and see if it's loose
     
    Big Road Skateboard, Oct 2, 2023
    Big Road Skateboard, Oct 2, 2023
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  9. Oct 2, 2023 #7
    Transportauto

    Transportauto Light Load Member

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    It's not loose and I did verify the signal. Never ran into this before. I mean tons of no cruise no Jake's and so but everything I can think of passes
     
    Transportauto, Oct 2, 2023
    Transportauto, Oct 2, 2023
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  10. Oct 2, 2023 #8
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    That truck didn't come with a hood switch did it? Can't remember what year they did awy with them
     
    Big Road Skateboard, Oct 2, 2023
    Big Road Skateboard, Oct 2, 2023
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  11. Oct 2, 2023 #9
    Bean Jr.

    Bean Jr. Road Train Member

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    Are you sure you checked the correct speed sensor? If your truck is like mine, the speedometer is not through the ecm. Speedometer worked. Jakes and fast idle. When I had the trans changed, they changed that sensor, and now it works.
     
    Bean Jr., Oct 2, 2023
    Bean Jr., Oct 2, 2023
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  12. Oct 2, 2023 #10
    Transportauto

    Transportauto Light Load Member

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    Hood switch I'll look, I don't believe I've ever seen one on a columbia however I did not look as well I did not see any listing for it on the laptop when watching the sensors and switches.
     
    Transportauto, Oct 2, 2023
    Transportauto, Oct 2, 2023
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