Front Wheel Alignment: Adjustment
- Check that the steering wheel is in the centered position.
- Disconnect the cable from the negative (-) battery terminal for more than 2 seconds.
- Reconnect the cable to the negative (-) battery terminal.
- Perform zero point calibration of the yaw rate and deceleration sensor and test mode inspection (See CALIBRATION ).
- INSPECT TIRE
- Inspect the tires (See INSPECTION ).
- MEASURE VEHICLE HEIGHT NOTE: Before inspecting the wheel alignment, adjust the vehicle height to the specification.
- Press down on the vehicle several times to stabilize the suspension, and then measure the vehicle height.
Standard Vehicle Height (Unloaded Vehicle)
VEHICLE HEIGHT SPECIFICATIONFront A - B Rear C - D 97 mm (3.82 in.) 77 mm (3.03 in.) Measuring points:
A:
Ground clearance of the front drive shaft center
B:
Ground clearance of the front adjusting cam bolt center
C:
Ground clearance of the rear axle shaft center
D:
Ground clearance of the rear lower control arm front side center
If the vehicle height is not as specified, adjust the height by pressing down on the vehicle several times to stabilize the suspension.
- Press down on the vehicle several times to stabilize the suspension, and then measure the vehicle height.
- INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION
- Install a camber-caster-kingpin gauge or place the front wheels on the center of a wheel alignment tester.
- Inspect the camber, caster and steering axis inclination.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Camber Inclination (Unloaded Vehicle)
CAMBER INCLINATION SPECIFICATIONCamber Inclination Camber 0° 08, +/-45' (0.13° +/-0.75°) Left - right error 45' (0.75°) or less Standard Caster Inclination (Unloaded Vehicle)
CASTER INCLINATION SPECIFICATIONCaster Inclination Caster 2°54' +/45' (2.90° +/-0.75°) Left - right error 45' (0.75°) or less Standard Steering Axis Inclination (Unloaded Vehicle)
STEERING AXIS INCLINATION SPECIFICATIONSteering Axis Inclination: Reference Steering Axis 12°51' (12.85°) HINT:
The steering axis inclination is a reference value.
- ADJUST CAMBER AND CASTER
HINT:
After the camber has been adjusted, inspect the toe-in.
- Loosen the front adjusting cam bolt and rear adjusting cam nut.
- Turn the front adjusting cam and rear adjusting cam in both directions, and adjust the camber and caster to the center value.
HINT:
- The camber and caster should be as close as possible to the center value.
- Adjust the camber and caster within +/- 30'.
- Read the adjustment chart (example).
- Find the wheel alignment standard value applicable for the particular model.
- Mark the selected standard value on the adjustment chart.
Standard Value (Reference)
CAMBER AND CASTER VALUE REFERENCECamber Caster 0°00' (0.00°) 4°00' (4.00°) - Mark the alignment value measured when the vehicle is unloaded on the adjustment chart.
Measured Value (Reference)
CAMBER AND CASTER VALUE REFERENCECamber Caster 0°11 (0.18°) 4°38' (4.63°) - As shown in the chart, read the distance from the marked point to 0, and adjust the front and/or rear adjusting cams accordingly.
Amount to Turn Adjusting Cams (by Gradation)
FRONT AND REAR ADJUSTING CAMBER SPECIFICATIONFront Adjusting Cam Rear Adjusting Cam +3.0 -2.0 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- INSPECT TOE-IN
- ADJUST TOE-IN
- Release the rack boot set clips.
- Loosen the tie rod end lock nuts.
- Turn the right and left rack ends by an equal amount to adjust the toe-in to the center value.
- Check that the length of the right and left rack ends are approximately the same.
Standard difference:
0 +/-1 mm (0 +/-0.0394 in.) or less
- Tighten the tie rod end lock nuts.
Torque: 82 N*m (836 kgf*cm, 60 ft.*lbf)
- Place the boots on the seats and install the clips.
HINT:
Make sure that the boots are not twisted.
- INSPECT WHEEL ANGLE
- Turn the steering wheel to the left and right full lock positions, and measure the turning angle.
Standard Wheel Turning Angle (Unloaded Vehicle)
STEERING WHEEL TURNING ANGLE REFERENCEInside Wheel Angle Outside Wheel Angle: Reference 33°31' to 36°31' 32°13' (33.52° to 36.52°) (32.21°) If the right and left inside wheel angles differ from the specified range, check the right and left rack end lengths.
- Turn the steering wheel to the left and right full lock positions, and measure the turning angle.
- PLACE FRONT WHEELS FACING STRAIGHT AHEAD
- DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTE:
- When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
- Disconnect the cable from the negative battery terminal for 2 seconds or more.
- CONNECT CABLE TO NEGATIVE BATTERY TERMINAL NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
- PERFORM YAW RATE AND DECELERATION SENSOR ZERO POINT CALIBRATION
- Perform the yaw rate and deceleration sensor zero point calibration (See CALIBRATION ).