Steering System: Repair: Repair

HINT: 

This is the repair procedure for steering wheel 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 35 mph (56 km/h), and hold the steering wheel to maintain the course.
   3. Draw a line on the masking tape as shown in the illustration.
      Fig 2: Drawing Line On Masking Tape

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Turn the steering wheel to the center position.
      Fig 3: Drawing Line On Masking Tape On Steering Wheel

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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.
   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.
2. Adjust the steering angle.
   1. Draw a line on the RH and LH tie rod ends and rack ends respectively where it can easily seen.
      Fig 4: Identifying Marked Line

      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.
      Fig 5: Tightening RH & LH Lock Nuts

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   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 rack end (1.5 mm (0.059 in.) horizontal movement) equals to 12 degrees of steering angle.

   6. Tighten the RH and LH lock nuts to the specified torque.

      Torque: 56 N*m ( 571 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. Refer to CALIBRATION .

1. Perform variable gear ratio steering system calibration. Refer to CALIBRATION .