No Brake lights 2006 vnl670 need help

Discussion in 'Volvo Forum' started by terryt, Sep 2, 2012.

  1. terryt

    terryt Heavy Load Member

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    Apr 27, 2009
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    Just stoped for the night. Found out I have NO brakes lights on tractor or trailer, Can anyone tell me where to start looking. Monday being the holiday parts are going to be hard to find and I need to be in Florida tuesday,
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    switch under brake pedal is used by VECU only (to disable C/C), but brake light input (LCM) is connected to 0.4BAR pressure switch, generally located in brake lines. On FH cabovers they are near battery box, on VN they put it under sleeper. It is 2 pin switch with twist connector, switch is really reliable but connector and wires go bad with road solt.
     
    mike5511 Thanks this.
  4. Kanu

    Kanu Bobtail Member

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    Jan 23, 2017
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  5. Kanu

    Kanu Bobtail Member

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    Jan 23, 2017
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    I need your help pablo.where exactly is the break switch located on volvo vnl 670
     
  6. Kanu

    Kanu Bobtail Member

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    Jan 23, 2017
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    I have been having problems lately with this truck.everytime i stop on a traffic loght my trailer brakes are not releasing
     
  7. jaykelz7

    jaykelz7 Bobtail Member

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    Nov 9, 2017
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    Hi Pablo
    I having problems with a 2012 Volvo vnl 780 d13.Losing prime and shutting down.Changed filter housing and fuel pump and fuel filters.Now truck runs but needs priming to start.I also checked check valves.Truck will not complete regen.Removed and cleaned 7th injector also.Please advise.Inbox me,Thanks
     
  8. Volvotech8080

    Volvotech8080 Bobtail Member

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    Dec 22, 2017
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    Jaykelz7 check injector cups.
     
  9. Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    it is not all. check fuel lines, fiter unit and fuel delivery pump

    how many psi fuel pump builds at idle (hot engine)
     
  10. Eddyvolvo

    Eddyvolvo Bobtail Member

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    May 28, 2017
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    I had the same problem with my 2011 volvo vhd d13 and the truck won’t running normally; I’ve pulled to the shop and the guys change the 7 injector new and the problem is gone; before doesn’t work regen properly and it was always on ! Cheers from Canada
     
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