VOLVO Speed Sensor

Discussion in 'Trucks [ Eighteen Wheelers ]' started by nutcase, Jan 31, 2011.

Page 4 of 8
  1. Pablo-UA

    Pablo-UA Road Train Member

    Joined:
    Oct 11, 2010
    Messages:
    7,604
    Thanks Received:
    1,642
    Location:
    Borispol, Ukraine
    0
    [​IMG]

    wires in PVC protection. Available in any electric store
     
    Pablo-UA, May 19, 2016
    #31
    05VNLDC Thanks this.
  2. 05VNLDC

    05VNLDC Bobtail Member

    Joined:
    May 18, 2016
    Messages:
    17
    Thanks Received:
    4
    Location:
    Houston, Tx
    0
    Yes, i agree on the weak wires..
     
    05VNLDC, May 21, 2016
    #32
  3. 05VNLDC

    05VNLDC Bobtail Member

    Joined:
    May 18, 2016
    Messages:
    17
    Thanks Received:
    4
    Location:
    Houston, Tx
    0
    Would you please email me a diagram or private message me? I cant thank you enough..
     
    05VNLDC, May 21, 2016
    #33
  4. Snailexpress

    Snailexpress Road Train Member

    Joined:
    Apr 28, 2014
    Messages:
    2,675
    Thanks Received:
    6,068
    Location:
    Rocky
    0
    Go buy any digital ohmmeter in homedepo or walmart. Check the J1939 communication link resistors. One is located on engine around ECM second one is around fuse block so need cover to be open. You can check resistance right on diagnostic plug. If resistors are bad replace it. If VECU or LCM is bad contact guys from truck bone yard they have it for cheap. Read attachments how to.
    Good luck.
     

    Attached Files:

    Snailexpress, May 22, 2016
    #34
    05VNLDC Thanks this.
  5. Snailexpress

    Snailexpress Road Train Member

    Joined:
    Apr 28, 2014
    Messages:
    2,675
    Thanks Received:
    6,068
    Location:
    Rocky
    0
    If you can read electrical diagram you can download it from volvo online
     
    Snailexpress, May 22, 2016
    #35
  6. 05VNLDC

    05VNLDC Bobtail Member

    Joined:
    May 18, 2016
    Messages:
    17
    Thanks Received:
    4
    Location:
    Houston, Tx
    0
    Thanks for your input, i have already checked the resistors on j1939. They checked good, with 60 and 120 ohms give or take. Im thinking it could be the j1708 data link.. but i havent found a way to check that one
    Also already replaced ecm, vecu and lcm.. i was able to idle the truck but still dont have communication at diagnostic plug with ptt vcads, and still no pedal responce.. if only i could get signal at the diag. Port i can start proorammin vecu and lcm but im thinking that i might need to replace abs and srs computers too.. since i keep getting a "Check Data Link Broken" message.
     
    Last edited: May 22, 2016
    05VNLDC, May 22, 2016
    #36
  7. Snailexpress

    Snailexpress Road Train Member

    Joined:
    Apr 28, 2014
    Messages:
    2,675
    Thanks Received:
    6,068
    Location:
    Rocky
    0
    Unplug those ABS and SRS computers. How did you check J1939? Remove one resistor and check with ohmmeter resistance of the line and resistor on other end of the link, right? Check both lines to the ground and +12 v with batteries disconnected.
    This bad idea to high jack someone also old thread
    Hopefully admins can move it
     
    Snailexpress, May 22, 2016
    #37
    05VNLDC Thanks this.
  8. 05VNLDC

    05VNLDC Bobtail Member

    Joined:
    May 18, 2016
    Messages:
    17
    Thanks Received:
    4
    Location:
    Houston, Tx
    0
    Yes im sorry for highjacking this thread. Didnt mean to do that, but if not allowed please move to another one..
    Thats correct! How i checked the data link.I will try the check to ground with all computers disconnected. Thanks for your help!
     
    05VNLDC, May 22, 2016
    #38
  9. Nunez770

    Nunez770 Bobtail Member

    Joined:
    Aug 23, 2016
    Messages:
    9
    Thanks Received:
    1
    0
    Would I need to program the vecu after replacing it.
     
    Nunez770, Aug 23, 2016
    #40
  10. Nunez770

    Nunez770 Bobtail Member

    Joined:
    Aug 23, 2016
    Messages:
    9
    Thanks Received:
    1
    0
    My truck doesn't turn on engine brake or cruise control. Today it stopped showing mph. So I'm thinking replacing the vecu would fix my problem. What do you guys think?
     
    Nunez770, Aug 23, 2016
    #40
Page 4 of 8