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abs module problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Martin U., Jul 15, 2015.

  1. Jul 15, 2015 #1
    Martin U.

    Martin U. Bobtail Member

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    Jun 10, 2015
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    I got a 2012 Prostar International. My abs and traction control warning light came on along with the upside down triangle. The trucks not doing its regular abs check clicks when I turn the key to the on position. I pushed the cruise on and resume/accel to check active fault codes and I got active code spn 627 fmi 4, spn 790 fmi 10, spn 790 fmi 2. Can anyone tell me what's going on, maybe how to fix. Or were is the best place to take it for repairs. Or what kinda hit my wallets gonna take for this fix.
     
    Martin U., Jul 15, 2015
    Martin U., Jul 15, 2015
    #1
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  3. Jul 15, 2015 #2
    Heavyd

    Heavyd Road Train Member

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    Those start up clicks are the ABS modulator valves doing a test. You can actually hold the brake pedal down and hear the air pop better each time a valve is tested. You should hear it cycle though all 4 valves, then repeat the cycle. If one is missing that valve is acting up. I would honestly suspect the wiring as the problem somewhere before any Bendix or Wabco part. Bendix and Wabco make some good stuff. I would recommend and International dealer as they will know your truck the best and have access to the proper wire diagrams.
     
    Heavyd, Jul 15, 2015
    Heavyd, Jul 15, 2015
    #2
    BoxCarKidd and Martin U. Thank this.
  4. Jul 15, 2015 #3
    Martin U.

    Martin U. Bobtail Member

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    Jun 10, 2015
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    It's not doing any clicks at all. I checked the fuses and there all fine. You think it might be the wiring then? I was hoping one of the sensors went down and the abs module shut down when it sensed the problem. I was hoping to stay away from international. I didn't wanna be down 2 days... would a petro be able to fix this?
     
    Martin U., Jul 15, 2015
    Martin U., Jul 15, 2015
    #3
  5. Jul 15, 2015 #4
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Anyone who has the wiring diagrams and is knowledgeable can certainly fix it. I have no idea what non-dealers have for training, materials or experience. I would say the whole ABS system is not powering up at all. The engine is detecting an ABS problem and that is why the triangle light is on too. If the ABS is not detected or not turning on the ABS and TRAC lights will stay on. There are generally three breakers or fuses for ABS. F11-D is a 5 amp fuse and usually F8-D and F8-B are 30 amp breakers if you have a Bendix system. Wabco would be similar.
     
    Heavyd, Jul 15, 2015
    Heavyd, Jul 15, 2015
    #4
    Martin U. Thanks this.
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