What and where ia a "Steer Angle Sensor"?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by kemosabi49, Mar 19, 2023.

  1. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

    10,077
    41,900
    Jan 13, 2013
    SW Arkansas
    0
    Icon on dash shows a car with squiggly lines behind it. No codes show from the truck but the ELD show a fault, SPN: 1807 FMI: 16. Google says 1807-Steer Angle Sensor, FMI 16- voltage out of range. Not causing any issues, it comes and goes but lately stays on more.
    I've never heard of a steer angle sensor before so I'm mainly just curious about what it does and where it would be located.

    Anyone? Thanks.
     
    Dave_in_AZ Thanks this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Lyle H

    Lyle H Road Train Member

    1,208
    2,625
    Apr 16, 2014
    0
    There’s an old thread on here about “steering wheel alignment” that may have the answer you’re looking for.
     
    Rideandrepair Thanks this.
  4. Lyle H

    Lyle H Road Train Member

    1,208
    2,625
    Apr 16, 2014
    0
  5. Goodysnap

    Goodysnap Road Train Member

    3,543
    8,507
    Jul 12, 2017
    0
    Truck make & model? Paccar?

    Since you have a voltage fault logged. Inspect connector at the sensor for secure. Suspect wiring issue or open sensor. Sometimes tilt column can dislodge connector from sensor from zip ties to tight. Also rotating column without steering shaft connected will break sensor internally.

    Sensor is located below steering wheel. Remove column covers front and rear to access connector.
     
  6. FLHT

    FLHT Road Train Member

    1,090
    1,616
    Aug 2, 2014
    0
    My little pickup has that switch on the dash
    Manual says to switch on when roads are slippery .
    Some kind of traction control ?
     
    Rideandrepair Thanks this.
  7. okiedokie

    okiedokie Road Train Member

    10,160
    66,110
    Jun 13, 2011
    PNWET
    0
    The steering angle calibration is as simple as centering the steering wheel, turning on the ignition switch, then turning lock-to-lock starting left then right and returning to center. ???
     
    Rideandrepair Thanks this.
  8. SmallPackage

    SmallPackage Road Train Member

    4,610
    13,923
    Dec 20, 2019
    Marion Texas
    0
    Thats one of them new fangled do dads built in todays autos to prepare them to drive themselves.
     
    Rideandrepair Thanks this.
  9. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

    10,077
    41,900
    Jan 13, 2013
    SW Arkansas
    0
    Thx. Truck is a 2019 International LT.
     
    Rideandrepair Thanks this.
  10. Goodysnap

    Goodysnap Road Train Member

    3,543
    8,507
    Jul 12, 2017
    0
    Steering angle is used for ABS and stability control. The ECU watches the sensor for steering action from Zero( straight ahead) as it relates to degree of turn from Right (positive) and Left(negative). When the wheel is turned weight is transfered to the opposing wheels. This matters because the ABS now knows that the wheels with less weight on them will likely lock up first during a braking event.

    The only way I am aware to calibrate the sensor is using the corresponding diagnostic tool to 0 the sensor at wheels straight ahead, be it Bendix or Wabco systems. This should be done any time the sensor is replaced or the steering components are disconnected to ensure its accuracy.
     
    Rideandrepair and jcatel Thank this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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