On-Board Diagnostics/ CAN BUS Question

Discussion in 'Freightliner Forum' started by TJ11111, Feb 12, 2018.

  1. TJ11111

    TJ11111 Bobtail Member

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    Feb 12, 2018
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    Hello,

    I am curious if anyone has any experience capturing brake pressure and steering wheel angle while using a data acquisition system connected to the CAN BUS of a newer Freightliner semi truck and if you have could you please comment on the accuracy of these readings and point me in the direction of the product that you were using? Thanks!
     
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  3. KVB

    KVB Heavy Load Member

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    I have a recording of a 2015 cascadia, on 9 pin J1939 connector.
    I did find Brake primary pressure and brake secundary presurre, but not the brake application pressures, nor steering wheel angle.

    Yellow marked was available.

    upload_2018-2-12_22-37-21.png

    upload_2018-2-12_22-35-32.png

    As I mentioned before, this was taken from the 9 pin diagnostic connector. You may find more on different CAN-busses, but I don't have recordings of them.
     
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  4. KVB

    KVB Heavy Load Member

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    The tools I use on CAN-bus are either Peak PCAN-USB (with Peak PCAN-view software), Elbas Ucint (with Ucint Suite CAN Trees) or Nexiq USB-link2 (with Nexiq Device Tester software or Cummins Insite).

    I like the Peak because it can also actively send messages (that you can create) onto the CAN-bus.

    upload_2018-2-12_22-51-31.png
     
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  5. mhyn

    mhyn Road Train Member

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    @KVB and @TJ11111
    who are you guys? :) hackers or o/o from future? :)
     
    Last edited: Feb 13, 2018
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  6. KVB

    KVB Heavy Load Member

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    In my case, none of the above.
    out of the 3 options hackers is closest (but still a long way from correct).
    o/o from the future: maybe one day, but not very likely
    gay: CERTAINLY NOT
     
  7. TJ11111

    TJ11111 Bobtail Member

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  8. KVB

    KVB Heavy Load Member

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    Thanks for editing....:)
     
  9. mhyn

    mhyn Road Train Member

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    stupid autocorrection and text entering sucks !
     
  10. uncleal13

    uncleal13 Road Train Member

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    Very cool.
    Actually the modern version of a hacker is thought of as an evil force.
    The traditional hacker, (as in “he is just a hack”), is someone with the curiosity to try and figure out how things work, and how to make them better, but doing it with no formal training or education in the area.
     
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  11. KVB

    KVB Heavy Load Member

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    I'm old and traditional.....:)
     
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