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Home >> Ford >> 2018 >> Taurus Limited, FWD, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Electronic Power Assist Steering Component Testing) >> PSCM DTC/Symptom Selection >> Pinpoint Tests S: Steering Column Mounted EPAS - Steering System Pull, Drift, Wander or Steering Wheel is Off Center

Pinpoint Tests S: Steering Column Mounted EPAS - Steering System Pull, Drift, Wander or Steering Wheel is Off Center

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: This pinpoint test is intended to diagnose vehicles with steering column mounted EPAS systems only. Do not use this pinpoint test to diagnose vehicles with steering gear mounted EPAS systems.
  1. S1: ISOLATE THE EPAS COLUMN ASSEMBLY 
    • Ignition OFF.
      NOTE: If equipped, the knee air bag module must be removed to gain access to the EPAS electrical connectors. REFER to appropriate SUPPLEMENTAL RESTRAINT SYSTEM article for additional information.
    • PSCM_A connector disconnected. (C2368A)
    • PSCM_B connector disconnected. (C2368B)
    • PSCM_C connector disconnected. (C2368C)
    • Test drive the vehicle and verify the pull, drift or wander.
    • Does the vehicle pull, drift or wander? 
    Yes No
    Go to  S2. Go to  S3.
  2. S2: CHECK THE STEERING AND SUSPENSION FOR BENT OR DAMAGED COMPONENTS 
    • Check for even tire sizes and pressures.
    • Check the steering gear for loose fasteners, worn or damaged bushings.
    • Check the steering and suspension for bent or damaged components.
    • Using hand force only, check the inner and outer tie rods for vertical and lateral movement in the tie-rod ball studs and sockets.
    • Verify the steering column shaft rotates freely and is not grounded against other vehicle components.
    • Has a concern been identified? 
    Yes No
    REPAIR or INSTALL new component(s) as necessary.
    CARRY OUT the steering angle sensor calibration procedure. REFER to PROGRAMABLE PARAMETERS/STEERING WHEEL POSITION SENSOR CALIBRATION on the scan tool and follow the calibration procedure.
    DRIVE the vehicle to VERIFY the repair.    		 Refer to appropriate Suspension article to diagnose suspension system drift/pull/wander.
  3. S3: CALIBRATE THE STEERING ANGLE SENSOR 
    • Ignition OFF.
    • PSCM_A connector connected. (C2368A) Make sure the connector seats and latches correctly.
    • PSCM_B connector connected. (C2368B) Make sure the connector seats and latches correctly.
    • PSCM_C connector connected. (C2368C) Make sure the connector seats and latches correctly.
    • Ignition ON, engine OFF.
    • Turn the steering wheel approximately 30 degrees in each direction, then return to the central position. Make sure the steering wheel is set to the straight ahead position.
    • With the vehicle stationary run the steering angle sensor calibration procedure.
      • REFER to PROGRAMABLE PARAMETERS/STEERING WHEEL POSITION SENSOR CALIBRATION on the scan tool and follow the calibration procedure.
    • Test drive the vehicle.
    • Is the pull, drift, wander or steering wheel off center concern still present? 
    Yes No
    CHECK and ADJUST the front and rear toe as necessary.
    CARRY OUT the steering angle sensor calibration procedure. REFER to PROGRAMABLE PARAMETERS/STEERING WHEEL POSITION SENSOR CALIBRATION on the scan tool and follow the calibration procedure.    		 The customers concern has been corrected.
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