Four Wheel Steering - 4WS
PreparationNOTE: Your alignment equipment must be capable of four-wheel alignment and use full-floating turntables for all four wheels, or full-floating turntables for the front wheels and full-floating slip plates for the rear wheel. All of the full-floating turntables/slip plates must be of equal height.
1. Check the tires for the proper inflation pressures.
2. Drive the car onto the alignment rack.
3. Apply the brakes with a brake pedal actuator.
4. Remove the No. 32 (brake light) fuse from the under-hood relay box.
5. Jack up the car and place it on safety stands.
6. Release the brakes by removing the brake pedal actuator.
7. Perform wheel runout checks according to the alignment equipment manufacturer's instruction9.
8. Re-apply the brakes with the brake actuator.
Warning: Keep the brakes applied throughout the remainder of the alignment procedure to prevent the car from rolling off the turntables and possibly causing injury.
9. Place the full-floating turntables, with locking pins installed, under all four wheels.
10. With the car's wheels in the straight-ahead position, lower the car onto the turntables.
11. Remove the locking pins from the turntables and bounce both ends of the car up and down several times to "settle" the suspension.
ALIGNMENT
NOTE:
^ Perform the alignment inspection/adjustment in the sequence presented below.
^ If certain portions of this procedure are not applicable to your type of alignment equipment, refer to the equipment manufacturer's instructions.
Front Caster:
1. Install the special tools on the wheels.
NOTE: Make sure the wheel hubs are clean and rust-free before installing the wheel alignment attachments.
2. Install a camber/caster gauge on the special tools and turn the wheel 20° inward.
3. Turn the adjust screw so that the bubble in the caster gauge is at 0°.
4. Turn the wheel 20° outward and read the caster on the gauge.
Caster angle: 2° 2O' ± 30'
5. If adjustment is required, record the caster reading and go to step 6.
If adjustment is not required, go to step 10.
6. Loosen the self-locking nut on the end of the radius rod.
7. Adjust the caster by turning the radius rod adjuster as required.
^ To increase caster: Turn the adjuster in.
^ To decrease caster: Turn the adjuster out.
NOTE: One full turn of the adjuster moves the radius rod 1.5 mm (0.06 in.) and changes the caster by 0° 20'.
8. Hold the radius rod adjuster nut in place and tighten the self-locking nut.
9. Recheck the caster angle.
Front Camber:
10. Return the front wheels to the straight-ahead position.
11. Check the camber of each front wheel using the gauge.
Front camber: 0° 00' ± 1°
12. Adjust the camber, if necessary, by loosening the upper arm locknuts and moving the knuckle/hub assembly.
Rear Camber:
13. Install the Rear Steering Center Lock Pin (T/N O7HAJ-SF1020A).
14. Check the camber of each rear wheel using the camber gauge.
Rear camber: -0° 20' (negative) ± 30'
NOTE: The difference in camber between the right and left wheels should be less than 20'.
15. Adjust the camber, if necessary, by loosening the upper arm locknuts and moving the knuckle/hub assembly.
Steering Wheel Alignment - Static (While the car is on the alignment rack)
16. Check the steering wheel alignment.
If it's off by more than 6° (5 mm at the steering wheel hub), remove the steering wheel and reposition it on the spines until it's within 6°.
17. Remove the Rear Steering Center Lock Pin and reinstall the gearbox cap bolt.
18. Turn the steering wheel until it is precisely centered in the straight-ahead position and secure it with a steering wheel holder.
Rear Toe:
19. Check the rear toe settings.
Right rear toe-in: 1 - 2 mm
Left rear toe-in: 1 - 2 mm
Total rear toe-in: 3 ± 1 mm
NOTE: The toe for each wheel should be the same.
^ If adjustment is required, go to step 20.
^ If adjustment is not required, go to step 22.
20. Loosen the tie-rod locknut and turn the tie-rod shaft until the toe setting is correct.
NOTE: One full turn of the tie-rod shaft changes the toe approximately 8.7 mm (11/32 in.).
21. After adjustment, tighten the tie-rod shaft locknut and reposition the tie-rod boot if necessary.
Front Toe:
22. Check the front toe settings.
Right front toe: 0 ± 1 mm
Left front toe: 0 ± 1 mm
Total front toe: 0 ± 2 mm
NOTE: The toe for each wheel should be the same.
^ If adjustment is required, go to step 23.
^ If adjustment is not required, go to step 25.
23. Loosen the tie-rod locknut and turn the tie-rod shaft until the toe setting is correct.
NOTE: One full turn of the tie-rod shaft changes the toe approximately 7.2 mm (9/32 in.).
24. After adjustment, tighten the tie-rod shaft locknut and reposition the tie-rod boot if necessary.
25. Recheck the final toe settings.
26. Reinstall the No.32 fuse, remove the brake pedal actuator, steering wheel holder, and the car from the alignment rack.
CAUTION: Be sure the Rear Steering Center Lock Pin was removed before moving the car off the alignment rack (step 17).
Steering Wheel Alignment - Dynamic (While the car is moving)
27. Place a strip of masking tape on the steering wheel hub and another on the upper column cover.
Draw a line across both pieces of tape with the steering wheel in the straight-ahead position.
28. Drive the car in a straight line on a flat road and check the steering wheel alignment.
29. If the steering wheel alignment is off by more than 3° (2.5 mm between the lines marked on the tape), return the car to the alignment rack and recheck the toe settings.
If the steering wheel alignment is off by less than 3° go to step 30.
30. Steering wheel off to left: face the inside of the left front wheel and turn the left tie-rod clockwise; then face the inside of the right front wheel and turn the right tie-rod shaft counterclockwise.
Each tie-rod shaft should be turned an equal amount.
Steering wheel off to right: face the inside of the right front wheel and turn the right tie-rod shaft clockwise; then face the inside of the left front wheel and turn the left tie-rod shaft counterclockwise.
Each tie-rod shaft should be turned an equal amount.
31. After adjustment, tighten the tie-rod shaft locknuts and reposition the tie-rod boots if necessary.
32. Drive the car in a straight line on a flat road and recheck the final steering wheel alignment.