Steering System: Adjustment

STEERING OFF CENTER ADJUSTMENT PROCEDURE
HINT:

This is the adjustment procedure for steering off center.
1. Inspect steering wheel off center.
  1. Apply masking tape on the top center of the steering wheel and steering column upper cover.
    
    Fig 1: Applying Masking Tape On Top Center Of Steering Wheel And Steering Column Upper Cover
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Drive the vehicle in a straight line for 100 meters at a constant speed of 56 km/h (35 mph), and hold the steering wheel to maintain the course.
  3. Draw a line on the masking tape as shown in the illustration.
  4. Turn the steering wheel to the center position.
    HINT:
    
    Look at the upper surface of the steering wheel, steering spoke and SRS airbag line to find the center position.
    
    Fig 2: Drawing Line On Masking Tape
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Draw a new line on the masking tape on the steering wheel as shown in the illustration.
  6. Measure the distance between the 2 lines on the masking tape on the steering wheel.
  7. Convert the measured distance to steering angle.
    HINT:
    - Measured distance 1 mm (0.04 in.) = Steering angle of approximately 1 degree.
    - Make a note of the steering angle.
      
      Fig 3: Drawing Line On Masking Tape On Steering Wheel
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Adjust steering angle.
  1. Draw a line on the RH and LH tie rod ends and rack ends respectively where it can be easily seen.
  2. Using a paper gauge, measure the distance from the RH and LH tie rod ends to the rack end screws.
    HINT:
    - Measure both the RH and LH sides.
    - Make a note of the measured values.
      
      Fig 4: Identifying Matchmarks On RH And LH Tie Rod Ends And Rack Ends
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Remove the RH and LH boot clips from the rack boots.
  4. Loosen the RH and LH lock nuts.
  5. Turn the RH and LH rack ends by the same amount (but in different directions) according to the steering angle.
    HINT:
    
    One 360 degree turn of the rack end (1.5 mm (0.059 in.) horizontal movement) equals to 12 degrees of steering angle.
    
    Fig 5: Locating Rack Boots RH And LH Clips
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Tighten the RH and LH lock nuts to the specified torque.
    Torque: 56 N*m (570 kgf*cm, 41 ft.*lbf)
    
    NOTE: Make sure that the difference in length between the RH and LH tie rod ends and rack end screws is within 1.5 mm (0.059 in.).
  7. Install the RH and LH boot clips.
  8. Perform steering angle sensor zero point calibration (see CALIBRATION ).