Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Where to begin with ABS fault light on?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by LBZ, Apr 13, 2013.

Page 1 of 2
  1. Apr 13, 2013 #1
    LBZ

    LBZ Road Train Member

    1,770
    1,262
    Oct 22, 2008
    Road to Nowhere
    0
    Last fall I had new king pins put on the truck. Got the truck back & the ABS light kicked on.
    Took it back to the shop that did the install & they just told me the sensor in the left front was(now)bad.

    Replaced it & that changed nothing. Light was still on.

    However, when you unhook the trailer, the light turns off.
    Hook trailer back up & it kicks on the trailer & truck ABS light as soon as you touch the brake pedal.
    Trailer light turns off immediately or as soon as the truck is rolling, but truck side stays on.

    I do not know even where to start & really do not want to drop it all off at a shop to chase gremlins.
    NO ABS issues present before king pins were replaced.

    Truck is a 2003 Pete 385 & trailer is a 2007 Miller.

    Any ideas would be appreciated.
     
    LBZ, Apr 13, 2013
    LBZ, Apr 13, 2013
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Apr 14, 2013 #2
    carrkool

    carrkool Heavy Load Member

    883
    494
    May 10, 2012
    adah, pa
    0
    I would still say front sensors. could be that they and have seen this so many times...did not clean the sensor hole very well and did not get it in properly so its not reading correctly.
     
    carrkool, Apr 14, 2013
    carrkool, Apr 14, 2013
    #2
  4. Apr 14, 2013 #3
    LBZ

    LBZ Road Train Member

    1,770
    1,262
    Oct 22, 2008
    Road to Nowhere
    0
    I changed the new sensor out & used a scotch brite pad before putting it back together. They did not on either side.

    Something else I forgot to note. The fuse on the block for ABS is a 30 amp one that the system is blowing. Have checked the wiring & do not see anything obvious where I can find it. Is there a way to check the module?
     
    LBZ, Apr 14, 2013
    LBZ, Apr 14, 2013
    #3
  5. Apr 14, 2013 #4
    3rd Gen Driver

    3rd Gen Driver Light Load Member

    134
    25
    Jun 6, 2010
    SC
    0
    Pigtail connections. If you're blowin fuses they're gettin over loaded. Ground and or abraised wires usually are the problem when blowing fuses, in my experience.
     
    3rd Gen Driver, Apr 14, 2013
    3rd Gen Driver, Apr 14, 2013
    #4
    LBZ Thanks this.
  7. Apr 14, 2013 #5
    eeb

    eeb Heavy Load Member

    731
    267
    Mar 24, 2013
    0
    Figure out and fix whatever is blowing the fuse. Like 3rd gen said check the pigtail, then the trailer wiring. Is there another trl you can hook to? If you don't have a the problem with a different trailer, that pretty much indicates the problem is in the trl.
     
    eeb, Apr 14, 2013
    eeb, Apr 14, 2013
    #5
  8. Apr 14, 2013 #6
    LBZ

    LBZ Road Train Member

    1,770
    1,262
    Oct 22, 2008
    Road to Nowhere
    0
    Good idea on hooking to another trailer. Only own this one & the obvious escaped me.

    Will check pigtail, it is probably due to be changed anyway. Bought the truck in 2010 & have not changed them or the airlines. So who knows how old they are. With a car trailer they get moved around quite a bit more as there is more deck space between the back of cab & trailer.
     
    LBZ, Apr 14, 2013
    LBZ, Apr 14, 2013
    #6
  9. Apr 14, 2013 #7
    windsmith

    windsmith Road Train Member

    7,296
    6,028
    Sep 2, 2011
    NEPA
    0
    This is the melted, shorted mess of the tractor side socket wiring harness that I had to replace. It was tripping the ABS light, as well as screwing with the parking lights, brake lights and turn signals in general. I'm lucky that I heard the breaker clicking in and out, and it didn't burn the truck to the ground while I was sleeping. Even with the 30 Amp breaker clicking in and out, the wiring harness was too hot to hold in your hand, and the plastic and rubber at the connector was smoking.

    The ABS line to the trailer is always hot - the only way I could get the smoke to stop was to d/c the batteries. I had to disconnect the trailer harness at the firewall so I could move the truck to the shop and get it fixed.

    connector.jpg
     
    windsmith, Apr 14, 2013
    windsmith, Apr 14, 2013
    #7
  10. Apr 14, 2013 #8
    dude6710

    dude6710 Road Train Member

    2,162
    622
    Mar 26, 2010
    MN
    0
    I get problems like this when my cable assembly is getting worn out. But I also see random turn signal arrows on my instrument panel. Ever try a new cable? I go through two a year, but I also hook to several trailers a day.
     
    dude6710, Apr 14, 2013
    dude6710, Apr 14, 2013
    #8
  11. Apr 17, 2013 #9
    LBZ

    LBZ Road Train Member

    1,770
    1,262
    Oct 22, 2008
    Road to Nowhere
    0
    This quick fix all went well. Need a different wrench end to get the air lines off & as soon as I pulled on the cord it shattered. :angryfire:
     

    Attached Files:

    LBZ, Apr 17, 2013
    LBZ, Apr 17, 2013
    #9
    windsmith Thanks this.
  12. Apr 22, 2013 #10
    LBZ

    LBZ Road Train Member

    1,770
    1,262
    Oct 22, 2008
    Road to Nowhere
    0
    Replaced the service airlines, power cable & new 7 pin socket. They were (over)due regardless.

    Found one ground that was the issue for the fuse blowing, fixed.

    The ABS light however, might as well be a beacon in a harbor. Yep, it is still on :angry4:

    Going back to the shop that did the king pins & plug the truck in to their system at 9 am.
     
    LBZ, Apr 22, 2013
    LBZ, Apr 22, 2013
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 2