'11 cascadia code chs 71 spn 520409 fail 04

Discussion in 'Trucks [ Eighteen Wheelers ]' started by marcusthegreat, Jul 29, 2016.

  1. marcusthegreat

    marcusthegreat Bobtail Member

    35
    4
    Jul 19, 2016
    All 48 states
    0
    Any idea what this means? Tractor left turn signal blinks fast and won't send signal to trailer for the left turn signal?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Newbeav Newbie

    Newbeav Newbie Medium Load Member

    356
    205
    Jun 3, 2011
    0
    Relay switch
     
  4. marcusthegreat

    marcusthegreat Bobtail Member

    35
    4
    Jul 19, 2016
    All 48 states
    0
    What's a relay switch ? I swapped both relays in the Sam chassis and still no progress . All the lights work fine, right turn signal great on tractor , trailer turn signals work fine with different tractor, left turn signal blinks fast on tractor but won't send to trailer; I told freightliner the code but they want me to bring in but suggested it could be the flasher within the body control computer?
     
  5. SLCTrucker

    SLCTrucker Medium Load Member

    404
    199
    Jan 15, 2009
    Salt Lake City UT
    0
    Under the hood is a fuse box, drivers side right next to steering shaft, that's the fuse box for the trailer lights.
     
    yb226 and wonderdog24 Thank this.
  6. Fitandtrim

    Fitandtrim Bobtail Member

    7
    2
    Sep 30, 2016
    0
    Did you have any luck finding out what caused the problems mine doing it now
     
  7. marcusthegreat

    marcusthegreat Bobtail Member

    35
    4
    Jul 19, 2016
    All 48 states
    0
  8. marcusthegreat

    marcusthegreat Bobtail Member

    35
    4
    Jul 19, 2016
    All 48 states
    0
    Lol it was a blown fuse, check the Sam chassis box and replace the fuses before thinking the worst
     
  9. Fitandtrim

    Fitandtrim Bobtail Member

    7
    2
    Sep 30, 2016
    0
    Sam chassis box located where?
     
  10. marcusthegreat

    marcusthegreat Bobtail Member

    35
    4
    Jul 19, 2016
    All 48 states
    0
    Underneath hood on driver side next to the hydraulic clutch fluid
     
  11. Fitandtrim

    Fitandtrim Bobtail Member

    7
    2
    Sep 30, 2016
    0
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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