Suspension - Wheel Alignment Specifications
SUSPENSIONSU008-06
Title:
WHEEL ALIGNMENT SPECIFICATIONS
Models:
'04 - '06 Sienna
December 21, 2006
Introduction
The purpose of this bulletin is to provide all necessary suspension alignment measurement and confirmation specifications in one document. The following specifications should be used in place of those contained in your alignment equipment if a discrepancy is discovered.
1. Tire Pressure Specifications
2. Vehicle Height Specifications
3. Front Total Toe Specifications
4. Front Wheel Angle Specifications
5. Front Wheel Camber Specifications
6. Front Wheel Caster Specifications
7. Steering Angle Inclination (SAI) Specifications
8. Rear Wheel Camber Specifications
9. Rear Total Toe Specifications
10. Repair Manual References
NOTE:
^ The rear total toe and vehicle height specifications listed in this bulletin may be different than those listed in the 2004, 2005, and 2006 model year Sienna Repair Manuals. The values provided by this bulletin should be used if a discrepancy is discovered.
^ In some cases alignment equipment software may allow the user to change the values stored in the equipment. Using the equipment user manual, determine whether your equipment has this capability and update the specifications, if applicable.
Applicable Vehicles
^ 2004 - 2006 model year Sienna vehicles.
Warranty Information
Alignment Specifications
NOTE:
The tables in this TSB include alignment specifications in all possible units of measurement. Confirm that you are referring to the same units of measurement in the chart as your alignment machine is displaying.
1. Tire Pressure Specifications
2. Vehicle Height Specifications
Measurement points:
A. Ground clearance of front wheel center.
B. Ground clearance of lower suspension arm No. 2 set bolt head center of downward face.
C. Ground clearance of rear axle carrier bush set bolt center.
D. Ground clearance of rear wheel center.
3. Front Total Toe Specifications
4. Front Wheel Angle Specifications
5. Front Wheel Camber Specifications
6. Front Wheel Caster Specifications
7. Steering Angle Inclination (SAI) Specifications
8. Rear Wheel Camber Specifications
9. Rear Total Toe Specifications
NOTE:
The Sienna rear suspension and axle beam assembly has a toe-correcting feature built in to the trailing arm bushings. (Refer to the Technical Information System [TIS], 2004 model year Sienna New Car Features, Suspension - Chassis and Drive train - "Suspension".) For this reason, it is important to focus on the total toe measurement rather than individual right and left toe measurements. Most 4-wheel alignment equipment will measure and display individual right and left toe readings and may indicate that a right or left toe is out of specification. If total toe is within specification, you may disregard individual right and left readings as the rear suspension and axle beam assembly will automatically "correct" the individual toe settings while the vehicle is driven.
10. Repair Manual References
Please refer to the applicable Repair Manual sections on TIS as listed in the table to view the diagnostic procedures for performing a suspension alignment measurement.