FRONT WHEEL ALIGNMENT ADJUSTMENT

CAUTION / NOTICE / HINT

Note

If the wheel alignment has been adjusted, or if suspension or underbody components have been removed/installed or replaced, be sure to perform the following initialization procedure in order for the system to function normally:


  • Perform zero point calibration of the yaw rate and acceleration sensor.

PROCEDURE


  1. INSPECT TIRES

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  2. MEASURE VEHICLE HEIGHT

    Note


    • Before inspecting the wheel alignment, check the vehicle height.

    • Be sure to perform measurement on a level surface.

    • If it is necessary to go under the vehicle for measurement, confirm that the parking brake is applied and the vehicle is secured with chocks.

    • Inspect while the vehicle is unloaded.

    • The standard value shown here is a value that is used for adjusting the wheel alignment and does not indicate the height of an actual vehicle.


    1. Bounce the vehicle up and down at the corners to stabilize the suspension.

    2. A01UZ3BE01

      Measure the vehicle height.

      Measuring points
      A
      Ground clearance of front wheel center
      B
      Ground clearance of front lower arm set front bolt center
      C
      Ground clearance of rear wheel center
      D
      Ground clearance of axle beam set bolt center
      Vehicle Height (Unloaded Vehicle)
      Tire Size Front A-B Rear C-D
      175/65R15 96.6 mm (3.80 in.) 31.5 mm (1.24 in.)
      185/60R15 86.6 mm (3.49 in.) 23.3 mm (0.917 in.)
      195/50R16 96.6 mm (3.80 in.) 31.4 mm (1.24 in.)

  3. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION

    A01UXUPE28
    Text in Illustration
    *a Turning Radius Gauge
    *b Camber-caster-kingpin Gauge

    1. Put the front wheel on the center of the turning radius gauge.

    2. Remove the wheel cap.

    3. Install the camber-caster-kingpin gauge at the center of the axle hub or drive shaft.

    4. Inspect the camber, caster and steering axis inclination.

      Camber Inclination (Unloaded Vehicle)
      Tire Size Camber Right-left Difference
      175/65 R15 -0°21' +/- 45' (-0.35° +/- 0.75°) 0°45' (0.75°)
      185/60 R15 -0°15' +/- 45' (-0.25° +/- 0.75°)
      195/50 R16 -0°21' +/- 45' (-0.35° +/- 0.75°)
      Caster Inclination (Unloaded Vehicle)
      Tire Size Caster Right-left Difference
      175/65 R15 4°59' +/- 45' (4.98° +/- 0.75°) 0°45' (0.75°)
      185/60 R15 4°52' +/- 45' (4.87° +/- 0.75°)
      195/50 R16 5°00' +/- 45' (5.00° +/- 0.75°)
      Steering Axis Inclination (Unloaded Vehicle)
      Tire Size

      Steering Axis Inclination

      (Reference)
      175/65 R15 11°20' (11.33°)
      185/60 R15 11°10' (11.17°)
      195/50 R16 11°20' (11.33°)

      If the caster and steering axis inclination are not within the specified values after the camber has been correctly adjusted, recheck the suspension parts for damage and wear.

      Note


      • Inspect while the vehicle is unloaded.

      • The tolerance for the difference between the left and right wheels is 30' (0.5°) or less for both the camber and caster.

    5. Remove the camber-caster-kingpin gauge.

    6. Install the wheel cap.

  4. ADJUST CAMBER

    Note

    Inspect the toe-in after the camber has been adjusted.


    1. Remove the front wheel.

    2. A01UXKU

      Remove the bolt and separate the front speed sensor and the front flexible hose.

    3. A01UXZ1

      Remove the 2 nuts from the lower side of the front shock absorber.

      Tech Tips

      Keep the bolt from rotating while loosening and removing the nuts.

    4. Clean the installation surfaces of the front shock absorber and the steering knuckle.

    5. Provisionally install the 2 nuts (Step A).

    6. A01V0OYE01

      Fully push or pull the axle hub in the direction of the required adjustment (Step B).

    7. A01UXZ1

      Tighten the 2 nuts.

      Torque:
      164 N*m  { 1672 kgf*cm, 121 ft.*lbf }

      Tech Tips

      Keep the bolt from rotating while loosening and removing the nuts.

    8. A01UXKU

      Install the front flexible hose and front speed sensor with the bolt.

      Torque:
      29 N*m  { 300 kgf*cm, 22 ft.*lbf }

      Note

      Install the front flexible hose and speed sensor without twisting them.

    9. Install the front wheel.

      Torque:
      103 N*m  { 1050 kgf*cm, 76 ft.*lbf }
    10. A01V0VEE01

      Check the camber.

      If the measured value is not within the specifications, calculate the required adjustment amount using the formula below.

      (Camber adjustment amount) = Center of specified range - Measured value

      Check the combination of installed bolts. Select appropriate bolts from the table below to adjust the camber to within the specified range.

      Tech Tips

      Try to adjust the camber to the center of the specified range.

      Move the axle hub toward (+) in step (B) Refer to table (1) (Move the axle hub toward positive side)
      Move the axle hub toward (-) in step (B) Refer to table (2) (Move the axle hub toward negative side)

      1. Table (1) (Move the axle hub toward the positive side)

        A01UXW7E41
        Text in Illustration
        *a Table (1) (Move the axle hub toward the positive side) *b Installed Bolt
        *c Adjusting Value *d 90109-15001
        *e 90109-15002 *f 90109-15003
        *g 90109-15004 *h Selected Bolt Combination

      2. Table (2) (Move the axle hub toward the negative side).

        A01UXW7E42
        Text in Illustration
        *a Table (1) (Move the axle hub toward the positive side) *b Installed Bolt
        *c Adjusting Value *d 90109-15001
        *e 90109-15002 *f 90109-15003
        *g 90109-15004 *h Selected Bolt Combination

        The body and suspension may be damaged if the camber is not correctly adjusted in accordance with the above table.

        Note

        Replace the nut with a new one when replacing the bolt.

    11. Repeat the steps mentioned above. At step (A), replace 1 or 2 selected bolts.

      Tech Tips

      Replace one bolt at a time when replacing 2 bolts.

  5. INSPECT TOE-IN


    1. Bounce the vehicle up and down at the corners to stabilize the suspension.

    2. Release the parking brake and move the shift lever to the N.

    3. Push the vehicle straight ahead approximately 5 m (16.4 ft.). (Step A)

    4. A01V20IE09
      Text in Illustration
      *a Tread Center Mark
      *b Dimension B
      A01V0R7 Front of the Vehicle

      Put tread center marks on the rearmost points of the front wheels and measure the distance between the marks (Dimension B).

    5. Slowly push the vehicle straight ahead to cause the front wheels to rotate 180° using the front tire valve as a reference point.

      Note

      Do not allow the wheels to rotate more than 180°. If the wheels rotate more than 180°, perform the procedure from (Step A) again.

    6. A01V08XE07
      Text in Illustration
      *a Dimension A
      A01V0R7 Front of the Vehicle

      Measure the distance between the tread center marks on the front side of the wheels (Dimension A).

      Toe-in (Unloaded Vehicle)
      Tire Size Specified Condition
      175/65 R15 C + D: 0°07' (0.10°)
      B - A: 1.2 +/- 2.0 mm 0.0472 +/- 0.0787 in.)
      185/60 R15 C + D: 0°07' (0.10°)
      B - A: 1.2 +/- 2.0 mm 0.0472 +/- 0.0787 in.)
      195/50 R16 C + D: 0°36' (0.60°)
      B - A: 1.3 +/- 2.0 mm 0.0511 +/- 0.0787 in.)

      Tech Tips

      Measure "B - A" only when "C + D" cannot be measured.

      If the toe-in is not within the specified value, adjust it at the rack ends.

  6. ADJUST TOE-IN

    A01UYRU

    1. Measure the thread lengths of the right and left rack ends.

      Standard
      Difference in thread length of 1.5 mm (0.0591 in.) or less

    2. Remove the rack boot set clips.

    3. Loosen the tie rod end lock nuts.

    4. Adjust the rack ends if the difference in thread length between the right and left rack ends is not within the specified range.


      1. Extend the shorter rack end if the measured toe-in deviates toward the outer-side.

      2. Shorten the longer rack end if the measured toe-in deviates toward the inner-side.

    5. Turn the right and left rack ends by an equal amount to adjust the toe-in.

      Tech Tips

      Try to adjust the toe-in to the center of the specified range.

    6. Make sure that the lengths of the right and left rack ends are the same.

    7. Tighten the tie rod end lock nuts to the specified torque.

      Torque:
      75 N*m  { 760 kgf*cm, 55 ft.*lbf }

      Note

      Temporarily tighten the lock nut while holding the hexagonal part of the steering rack end so that the lock nut and the steering rack end do not turn together. Hold the flat of the tie rod end and tighten the lock nut.

    8. Place the boots on the seats.

    9. A01UYJBE01
      Text in Illustration
      *a Upper Side
      *b Front Side
      *c 180° (Clip installation range)

      Using pliers, install the RH and LH boot clips as shown in the illustration.

      Note


      • Install the clip so that its claws are within the clip installation range.

      • Make sure that the rack boots are not twisted.

  7. INSPECT WHEEL TURNING ANGLE

    A01V0F7E12
    Text in Illustration
    *a Inside
    *b Outside
    A01V0R7 Front of the Vehicle

    1. Fully turn the steering wheel left and right, and measure the wheel turning angle.

      Wheel Turning Angle (Unloaded Vehicle)
      Tire Size Inside Wheel Outside Wheel
      175/65 R15 39°55' +/- 2° (39.92° +/- 2°) 34°33' (34.55°)
      185/60 R15 40°06' +/- 2° (40.10° +/- 2°) 34°44' (34.73°)
      195/50 R16 32°30' +/- 2° (32.50° +/- 2°) 29°31' (29.51°)

      If the right and left inside wheel angles are not within the specified range, check the right and left rack end lengths.

  8. PLACE FRONT WHEELS FACING STRAIGHT AHEAD

  9. PERFORM YAW RATE AND ACCELERATION SENSOR CALIBRATION

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