Rear Wheel Alignment: Adjustment: Adjustment

WARNING: This page is about a different car, the 2009 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

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:

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 acceleration sensor and test mode inspection.

HINT:

Refer to CALIBRATION

INSPECT REAR SUSPENSION
1. Inspect the rear suspension member.
  
  Fig 1: Inspecting Rear Suspension Member
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Measure the distance between the centers of the installation bolts of the rear No. 2 suspension arm assembly LH and RH.
    Standard
    
    508.6 to 514.6 mm (20.02 to 20.25 in.)
    
    If the distance is not within the specified range, replace the rear suspension member.
  2. Visually inspect the press holes on the installation area of the rear upper No. 2 control arm assembly.
    Standard
    
    The holes are not deformed.
    
    Fig 2: Inspecting Press Holes On Installation Area Of Rear Upper No. 2 Control Arm Assembly
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the holes are deformed, replace the rear suspension member.
2. Inspect the rear No. 2 suspension arm assembly.
  
  Fig 3: Inspecting Rear No. 2 Suspension Arm Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Measure the distance between the centers of the 2 installation bolts of the rear No. 2 suspension arm assembly.
    Standard
    
    433.4 to 434.4 mm (17.063 to 17.102 in.)
    
    If the distance is not within the specified range, replace the rear No. 2 suspension arm assembly.
3. Inspect the rear upper No. 2 control arm assembly.
  
  Fig 4: Measuring Distance Between Centers Of Installation Bolt Of Rear Upper No. 2 Control Arm Assembly & Ball Joint Stud
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Measure the distance between the centers of the installation bolt of the rear upper No. 2 control arm assembly and the ball joint stud.
    Standard
    
    310.6 to 312.0 mm (12.2 to 12.3 in.)
    
    If the distance is not within the specified range, replace the rear upper No. 2 control arm assembly.
4. Inspect and adjust the toe-in and camber.
  1. Inspect the toe-in and camber.
    If the values are not within the specified ranges, adjust the installation bolt holding the rear suspension member to the vehicle body, or the bolt holding the upper control arm and rear suspension arm so that the values fall within the specified ranges.
INSPECT TIRES . Refer to INSPECTION - Step 1
MEASURE VEHICLE HEIGHT See step 3
INSPECT TOE-IN

Fig 5: Inspecting Toe-In
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Toe-in

Toe-in (Total)

B - A: 3 +/- 2 mm (0.118 +/- 0.0787 in.)

If the toe-in is not within the specified range, inspect the suspension parts and replace parts if necessary.
ADJUST TOE-IN
1. Loosen the toe adjust cam nut.
  
  Fig 6: Adjusting Toe-In
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the adjust cams by an equal amount to adjust the toe-in.
  HINT:
  - Try to adjust the toe-in to the center value.
  - The toe-in will change by the following amount corresponding to each graduation of the cam:
    Approx. 4.0 mm (0.16 in.)
3. Tighten the nut.
  Torque: 50 N*m ( 510 kgf*cm, 37 ft.*lbf)

Toe-in (Total)
B - A: 3 +/- 2 mm (0.118 +/- 0.0787 in.)

INSPECT CAMBER

Install a camber-caster-kingpin gauge or put the rear wheels on a wheel alignment tester.

Fig 7: Inspecting Camber
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Inspect the camber.

Camber

Camber Angle
-0°47' +/- 45' (- 0.78° +/- 0.75°)

NOTE:

Inspect while the vehicle is unloaded.
The maximum tolerance of right and left difference for the camber is 30' (0.5°) or less.

If the measured value is not within the specified range, inspect the suspension parts for damage and wear. Replace parts as necessary because camber cannot be properly adjusted with any damaged or worn parts.

PLACE FRONT WHEELS FACING STRAIGHT AHEAD
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTE:
Disconnect the cable from the negative battery terminal for more than 2 seconds.
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION
HINT:

Perform yaw rate sensor zero point calibration. Refer to CALIBRATION .
CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION
HINT:

Check steering angle sensor zero point calibration. Refer to PROCEDURE - Step 2 .