Steering System: Adjustment

HINT.

This is the adjustment procedure for steering off center.

Fig 1: Identifying Steering Wheel Free Play

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Inspect steering wheel off center
   1. Apply masking tape to the top center of the steering wheel and steering column upper cover.
   2. Drive the vehicle in a straight line for 100 m (328 ft.) at a constant speed of 56 km/h (35 mph), and hold the steering wheel to maintain the course.
      Fig 2: Applying Masking Tape To Top Center Of Steering Wheel And Steering Column Upper Cover

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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.

   5. Draw a new line on the masking tape on the steering wheel as shown in the illustration.
      Fig 3: Drawing Line On Masking Tape

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 (0.0394 in) = Steering angle of approximately 1 degree
      • Make a note of the steering angle
        Fig 4: Drawing Line On Masking Tape

        Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Adjust the steering angle
   1. Draw a line on the RH and LH tie rod ends and rack ends respectively where it can be easily seen
      Fig 5: Identifying Matchmark

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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.
   3. Remove the RH and LH boot clips from the rack boots.
   4. Loosen the RH and LH lock nuts
      Fig 6: Identifying Boot Clamp And Tie Rod End Lock Nut

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 0591 in.) horizontal movement) equals 12 degrees of steering angle.

   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 (0.0591 in.).
   7. Install the RH and LH boot clips.
   8. Perform steering angle sensor zero point calibration (see CALIBRATION ).