ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT; 2018 MY Sienna [11/2017

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM1000000018I4Q
Model Year Start: 2018	Model: Sienna	Prod Date Range: [11/2017 - 08/2018]
Title: ALIGNMENT / HANDLING DIAGNOSIS: FRONT WHEEL ALIGNMENT: ADJUSTMENT; 2018 MY Sienna [11/2017 - 08/2018]

ADJUSTMENT

CAUTION / NOTICE / HINT

NOTICE:

If the wheel alignment has been adjusted, and 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 and test mode inspection.

PROCEDURE

1. INSPECT TIRES

Click here

2. MEASURE VEHICLE HEIGHT

NOTICE:

Before inspecting the wheel alignment, adjust the vehicle height to the specified value.
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.

(a) Bounce the vehicle up and down at the corners to stabilize the suspension.

(b) Measure the vehicle height.

Text in Illustration

for 2WD

for AWD

Measurement points:

Ground clearance of front wheel center

Ground clearance of No. 2 lower suspension arm bushing set bolt center

Ground clearance of rear wheel center

Ground clearance of axle beam set bolt center

Vehicle Height (Unloaded Vehicle):

Vehicle Model	Tire Size	Front A - B	Rear C - D
GSL30L-PFZDHA	P235/60R17	125.2 mm (4.93 in.)	-17.5 mm (-0.689 in.)
GSL30L-PFZEHA	P235/60R17	126.3 mm (4.97 in.)	-15.1 mm (-0.594 in.)
GSL30L-PRZEHA	P235/60R17	127.1 mm (5.00 in.)	-14.8 mm (-0.583 in.)
GSL30L-PFZQHA	P235/60R17	130.0 mm (5.12 in.)	-10.9 mm (-0.429 in.)
GSL30L-PFZQHA	235/55R18	130.0 mm (5.12 in.)	-10.9 mm (-0.429 in.)
GSL30L-PRZQHA	P235/60R17	129.3 mm (5.09 in.)	-11.7 mm (-0.461 in.)
GSL30L-PFZQHK	235/55R18	130.9 mm (5.15 in.)	-8.7 mm (-0.343 in.)
GSL30L-PRZSHA	P235/50R19	139.1 mm (5.48 in.)	-2.7 mm (-0.106 in.)
GSL33L-SEZDHA	P235/60R17	122.7 mm (4.83 in.)	-26.9 mm (-1.059 in.)
GSL35L-PFZEHA	235/55RF18	131.8 mm (5.19 in.)	-28.9 mm (-1.138 in.)
GSL35L-PFZQHA	235/55RF18	134.5 mm (5.30 in.)	-25.4 mm (-1.000 in.)
GSL35L-PFZQHK	235/55RF18	134.7 mm (5.30 in.)	-23.8 mm (-0.937 in.)

3. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION

(a) Install the camber-caster-kingpin gauge and place the front wheels on the center of the turning radius gauge.

Text in Illustration

*a	Turning Radius Gauge
*b	Camber-caster-kingpin Gauge

(b) Inspect the camber, caster and steering axis inclination.

Camber (Unloaded Vehicle):

Vehicle Model	Tire Size	Camber Inclination	Right-left Difference
GSL30L-PFZDHA	P235/60R17	-0°26' +/- 45' (-0.43° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZEHA	P235/60R17	-0°26' +/- 45' (-0.43° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZEHA	P235/60R17	-0°27' +/- 45' (-0.45° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHA	P235/60R17	-0°28' +/- 45' (-0.47° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHA	235/55R18	-0°28' +/- 45' (-0.47° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZQHA	P235/60R17	-0°27' +/- 45' (-0.45° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHK	235/55R18	-0°28' +/- 45' (-0.47° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZSHA	P235/50R19	-0°31' +/- 45' (-0.52° +/- 0.75°)	30' (0.5°) or less
GSL33L-SEZDHA	P235/60R17	-0°25' +/- 45' (-0.42° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZEHA	235/55RF18	-0°27' +/- 45' (-0.45° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZQHA	235/55RF18	-0°28' +/- 45' (-0.47° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZQHK	235/55RF18	-0°28' +/- 45' (-0.47° +/- 0.75°)	30' (0.5°) or less

Caster (Unloaded Vehicle):

Vehicle Model	Tire Size	Caster Inclination	Right-left Difference
GSL30L-PFZDHA	P235/60R17	2°49' +/- 45' (2.82° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZEHA	P235/60R17	2°52' +/- 45' (2.87° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZEHA	P235/60R17	2°51' +/- 45' (2.85° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHA	P235/60R17	2°55' +/- 45' (2.92° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHA	235/55R18	2°55' +/- 45' (2.92° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZQHA	P235/60R17	2°54' +/- 45' (2.90° +/- 0.75°)	30' (0.5°) or less
GSL30L-PFZQHK	235/55R18	2°58' +/- 45' (2.97° +/- 0.75°)	30' (0.5°) or less
GSL30L-PRZSHA	P235/50R19	3°00' +/- 45' (3°00' +/- 0.75°)	30' (0.5°) or less
GSL33L-SEZDHA	P235/60R17	2°36' +/- 45' (2.60° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZEHA	235/55RF18	2°48' +/- 45' (2.80° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZQHA	235/55RF18	2°51' +/- 45' (2.85° +/- 0.75°)	30' (0.5°) or less
GSL35L-PFZQHK	235/55RF18	2°52' +/- 45' (2.87° +/- 0.75°)	30' (0.5°) or less

Steering Axis Inclination (Unloaded Vehicle):

Vehicle Model	Tire Size	Steering Axis Inclination
GSL30L-PFZDHA	P235/60R17	11°08' +/- 45' (11.13° +/- 0.75°)
GSL30L-PFZEHA	P235/60R17	11°09' +/- 45' (11.15° +/- 0.75°)
GSL30L-PRZEHA	P235/60R17	11°10' +/- 45' (11.17° +/- 0.75°)
GSL30L-PFZQHA	P235/60R17	11°13' +/- 45' (11.22° +/- 0.75°)
GSL30L-PFZQHA	235/55R18	11°13' +/- 45' (11.22° +/- 0.75°)
GSL30L-PRZQHA	P235/60R17	11°12' +/- 45' (11.20° +/- 0.75°)
GSL30L-PFZQHK	235/55R18	11°14' +/- 45' (11.23° +/- 0.75°)
GSL30L-PRZSHA	P235/50R19	11°22' +/- 45' (11.37° +/- 0.75°)
GSL33L-SEZDHA	P235/60R17	11°07' +/- 45' (11.12° +/- 0.75°)
GSL35L-PFZEHA	235/55RF18	11°02' +/- 45' (11.03° +/- 0.75°)
GSL35L-PFZQHA	235/55RF18	11°04' +/- 45' (11.07° +/- 0.75°)
GSL35L-PFZQHK	235/55RF18	11°04' +/- 45' (11.07° +/- 0.75°)

NOTICE:

Inspect while the vehicle is unloaded.
The tolerance for the difference between the left and right wheels is 0°30' (0.5°) or less for both the camber and caster.

4. ADJUST CAMBER

NOTICE:

Inspect toe-in after the camber has been adjusted.

(a) Remove the front wheel.

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

NOTICE:

When removing the nuts, keep the bolts from rotating.

(d) Temporarily install the 2 nuts. (Step A)

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

(f) Tighten the nuts.

Torque:

290 N·m {2957 kgf·cm, 214 ft·lbf}

NOTICE:

Keep the bolts from rotating when tightening the nuts.

(g) Install the front wheel.

Torque:

103 N·m {1050 kgf·cm, 76 ft·lbf}

(h) Check the camber.

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

Camber adjustment amount = center value of the specified range - measured value

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

HINT:

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

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

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

Text in Illustration

*a	Table (1) (Move the axle hub toward the positive side)	*b	Installed Bolt
*c	Adjustment Amount	*d	-1°30' to -1°15' (-1.50° to -1.25°)
*e	-1°15' to -1°00' (-1.25° to -1°)	*f	-1°00' to -0°45' (-1° to -0.75°)
*g	-0°45' to -0°30' (-0.75° to -0.5°)	*h	-0°30' to -0°15' (-0.5° to -0.25°)
*i	-0°15' to 0° (-0.25° to -0°)	*j	0° to 0°15' (0° to 0.25°)
*k	0°15' to 0°30' (0.25° to 0.5°)	*l	0°30' to 0°45' (0.5° to 0.75°)
*m	0°45' to 1°00' (0.75° to 1°)	*n	1°00' to 1°15' (1° to 1.25°)
*o	1°15' to 1°30' (1.25° to 1.5°)	*p	Selected Bolt Combination

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

Text in Illustration

*a	Table (2) (Move the axle hub toward the negative side)	*b	Installed Bolt
*c	Adjustment Amount	*d	-1°30' to -1°15' (-1.50° to -1.25°)
*e	-1°15' to -1°00' (-1.25° to -1°)	*f	-1°00' to -0°45' (-1° to -0.75°)
*g	-0°45' to -0°30' (-0.75° to -0.5°)	*h	-0°30' to -0°15' (-0.5° to -0.25°)
*i	-0°15' to 0° (-0.25° to -0°)	*j	0° to 0°15' (0° to 0.25°)
*k	0°15' to 0°30' (0.25° to 0.5°)	*l	0°30' to 0°45' (0.5° to 0.75°)
*m	0°45' to 1°00' (0.75° to 1°)	*n	1°00' to 1°15' (1° to 1.25°)
*o	1°15' to 1°30' (1.25° to 1.5°)	*p	Selected Bolt Combination

The body and suspension may be damaged if the camber is not correctly adjusted according to the above table.

NOTICE:

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

(i) Repeat the steps mentioned above. In (Step A), replace 1 or 2 selected bolts.

HINT:

Replace one bolt at a time when replacing 2 bolts.

5. INSPECT TOE-IN

(a) Bounce the vehicle up and down at the corners to stabilize the suspension.

(b) Release the parking brake and move the shift lever to N.

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

Text in Illustration

*a	Tread Center Mark
*b	Dimension B
	Front of the Vehicle

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

NOTICE:

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

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

Text in Illustration

*a	Dimension A
	Front of the Vehicle

Toe-in (Unloaded Vehicle):

Vehicle Model	Tire Size	B - A	C + D
GSL30L-PFZDHA	P235/60R17	1.1 +/- 2 mm (0.0433 +/- 0.0787 in.)	0°05' +/- 12' (0.08° +/- 0.2°)
GSL30L-PFZEHA	P235/60R17	1.1 +/- 2 mm (0.0433 +/- 0.0787 in.)	0°05' +/- 12' (0.08° +/- 0.2°)
GSL30L-PRZEHA	P235/60R17	1.0 +/- 2 mm (0.0394 +/- 0.0787 in.)	0°05' +/- 12' (0.08° +/- 0.2°)
GSL30L-PFZQHA	P235/60R17	0.8 +/- 2 mm (0.0315 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL30L-PFZQHA	235/55R18	0.8 +/- 2 mm (0.0315 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL30L-PRZQHA	P235/60R17	0.9 +/- 2 mm (0.0354 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL30L-PFZQHK	235/55R18	0.8 +/- 2 mm (0.0315 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL30L-PRZSHA	P235/50R19	0.9 +/- 2 mm (0.0354 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL33L-SEZDHA	P235/60R17	0.8 +/- 2 mm (0.0315 +/- 0.0787 in.)	0°06' +/- 12' (0.10° +/- 0.2°)
GSL35L-PFZEHA	235/55RF18	0.8 +/- 2 mm (0.0315 +/- 0.0787 in.)	0°04' +/- 12' (0.07° +/- 0.2°)
GSL35L-PFZQHA	235/55RF18	0.7 +/- 2 mm (0.0276 +/- 0.0787 in.)	0°03' +/- 12' (0.05° +/- 0.2°)
GSL35L-PFZQHK	235/55RF18	0.7 +/- 2 mm (0.0276 +/- 0.0787 in.)	0°03' +/- 12' (0.05° +/- 0.2°)

HINT:

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

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

6. ADJUST TOE-IN

(a) Make sure that the lengths of the right and left rack ends are almost the same.

Text in Illustration

*a	Difference

Standard difference:

1.5 mm (0.0591 in.) or less

(b) Remove the steering rack boot clips.

Text in Illustration

*a	Loosen
*b	Turn

(d) 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 outside.

(2) Shorten the longer rack end if the measured toe-in deviates toward the inside.

(e) Turn the right and left rack ends by an equal amount to adjust the toe-in to the center value.

HINT:

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

(f) Make sure that the lengths of the right and left rack ends are the same.

(g) Tighten the tie rod end lock nuts to the specified torque.

Torque:

88 N·m {897 kgf·cm, 65 ft·lbf}

NOTICE:

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.

(h) Place the boots on the seats and install the steering rack boot set clips.

HINT:

Make sure that the boots are not twisted.

7. INSPECT WHEEL ANGLE

NOTICE:

Inspect while the vehicle is unloaded.

(a) Put tread center marks on the rearmost points of the turning radius gauge.

(b) Turn the steering wheel to the left and right full lock positions, and measure the turning angle.

Text in Illustration

*a	Inside
*b	Outside
	Front of the Vehicle

Wheel Turning Angle (Unloaded Vehicle):

Vehicle Model	Tire Size	Inside Wheel	Outside Wheel (Reference)
GSL30L-PFZDHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PFZEHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PRZEHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PFZQHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PFZQHA	235/55R18	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PRZQHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PFZQHK	235/55R18	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL30L-PRZSHA	P235/50R19	-42°08' +/- 2° (-42.13° +/- 2°)	36°19' (36.32°)
GSL33L-SEZDHA	P235/60R17	-42°30' +/- 2° (-42.50° +/- 2°)	36°34' (36.57°)
GSL35L-PFZEHA	235/55RF18	-41°56' +/- 2° (-41.93° +/- 2°)	36°18' (36. 30°)
GSL35L-PFZQHA	235/55RF18	-41°56' +/- 2° (-41.93° +/- 2°)	36°18' (36. 30°)
GSL35L-PFZQHK	235/55RF18	-41°56' +/- 2° (-41.93° +/- 2°)	36°18' (36. 30°)

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