Toyota 4Runner: Adjustment

Toyota 4Runner Service Manual / Suspension / Alignment / Handling Diagnosis / Front Wheel Alignment / Adjustment

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 the test mode inspection.

PROCEDURE

1. INSPECT TIRES

(a) Inspect the tires (See page ).

2. MEASURE VEHICLE HEIGHT

NOTICE:

Before inspecting the wheel alignment, adjust the vehicle height to the specification.

(a) Press down on the vehicle several times to stabilize the suspension, and then measure the vehicle height.

Text in Illustration

*a	Front Side
*b	Rear Side

Measuring points:

Ground clearance of the center of the front wheel

Ground clearance of the center of the front adjusting cam bolt

Ground clearance of the center of the rear wheel

Ground clearance of the center of the rear lower control arm front side

If the vehicle height is not as specified, adjust the height by pressing down on the vehicle several times to stabilize the suspension.

Standard Vehicle Height (Unloaded Vehicle):

Vehicle Model	Grade	Front (A - B)	Rear (C - D)
GRN280L-GKAGKA	SR5, SR5 Premium	116.7 mm (4.59 in.)	80.7 mm (3.18 in.)
GRN280L-GKAGKA	LIMITED	117.2 mm (4.61 in.)	85.4 mm (3.36 in.)
GRN285L-GKAGKA	SR5, SR5 Premium	94.9 mm (3.74 in.)	68.8 mm (2.71 in.)
	TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	95.6 mm (3.76 in.)	69.8 mm (2.75 in.)
	TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	98.2 mm (3.87 in.)	72.1 mm (2.84 in.)
	LIMITED	97.6 mm (3.84 in.)	72.5 mm (2.85 in.)

NOTICE:

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.

3. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION

(a) Install a camber-caster-kingpin gauge or place the front wheels on the center of a wheel alignment tester.

Text in Illustration

*1	Wheel Alignment Tester
*2	Gauge

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

Standard Camber Inclination (Unloaded Vehicle):

Vehicle Model	Grade	Camber Inclination	Right-left Difference
GRN280L-GKAGKA	SR5, SR5 Premium	-0°37' +/-30' (-0.62° +/-0.5°)	30' (0.5°) or less
GRN280L-GKAGKA	LIMITED	-0°38' +/-30' (-0.63° +/-0.5°)	30' (0.5°) or less
GRN285L-GKAGKA	SR5, SR5 Premium	-0°1' +/-30' (-0.02° +/-0.5°)	30' (0.5°) or less
	TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	-0°3' +/-30' (-0.05° +/-0.5°)	30' (0.5°) or less
	TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	-0°7' +/-30' (-0.12° +/-0.5°)	30' (0.5°) or less
	LIMITED	-0°6' +/-30' (-0.10° +/-0.5°)	30' (0.5°) or less

Standard Caster Inclination (Unloaded Vehicle):

Vehicle Model	Grade	Caster Inclination	Right-left Difference
GRN280L-GKAGKA	SR5, SR5 Premium	3°40' +/-30' (3.67° +/-0.5°)	30' (0.5°) or less
GRN280L-GKAGKA	LIMITED	3°50' +/-30' (3.83° +/-0.5°)	30' (0.5°) or less
GRN285L-GKAGKA	SR5, SR5 Premium	3°15' +/-30' (3.25° +/-0.5°)	30' (0.5°) or less
	TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	3°16' +/-30' (3.27° +/-0.5°)	30' (0.5°) or less
	TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	3°21' +/-30' (3.35° +/-0.5°)	30' (0.5°) or less
	LIMITED	3°22' +/-30' (3.37° +/-0.5°)	30' (0.5°) or less

Standard Steering Axis Inclination (Unloaded Vehicle):

Vehicle Model	Grade	Steering Axis Inclination
GRN280L-GKAGKA	SR5, SR5 Premium	12°42' +/-30' (12.70° +/-0.5°)
GRN280L-GKAGKA	LIMITED	12°44' +/-30' (12.73° +/-0.5°)
GRN285L-GKAGKA	SR5, SR5 Premium	12°11' +/-30' (12.18° +/-0.5°)
	TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	12°12' +/-30' (12.20° +/-0.5°)
	TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	12°16' +/-30' (12.27° +/-0.5°)
	LIMITED	12°15' +/-30' (12.25° +/-0.5°)

4. ADJUST CAMBER AND CASTER

HINT:

After the camber has been adjusted, inspect the toe-in.

(a) Loosen the front adjusting cam bolt and rear adjusting cam nut.

(b) 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'.

Text in Illustration

*1	Front Adjusting Cam LH	*2	Front Adjusting Cam RH
*3	Rear Adjusting Cam LH	*4	Rear Adjusting Cam RH
	Front	-	-

Text in Illustration

*1	Caster
*2	Camber
*3	Front Adjusting Cam
*4	Rear Adjusting Cam
*a	Measured Value
*b	Standard Value

(1) Find the wheel alignment standard value applicable for the particular model.

(2) Mark the selected standard value on the adjustment chart.

Standard Value (Reference)

Camber	Caster
0°00' (0.00°)	3°30' (3.50°)

(3) Mark the alignment value measured when the vehicle is unloaded on the adjustment chart.

Measured Value (Reference)

Camber	Caster
-0°20' (-0.33°)	3°20' (3.33°)

(4) 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 Adjusting Cam	Rear Adjusting Cam
+3	+2

Text in Illustration

*a	Camber	*b	Caster
*c	Front Cam Graduation	*d	Rear Cam Graduation

5. INSPECT TOE-IN

(a) Bounce the vehicle up and down at the corners to stabilize the suspension and inspect the toe-in.

Text in Illustration

Front

Standard Toe-in (Unloaded Vehicle):

Vehicle Model	Grade	Toe-in
GRN280L-GKAGKA	SR5, SR5 Premium	A + B: 0°10' +/-0°9' (0.16° +/-0.15°) C - D: 2.35 +/-2 mm (0.09 +/-0.08 in.)
GRN280L-GKAGKA	LIMITED	A + B: 0°10' +/-0°9' (0.16° +/-0.15°) C - D: 2.16 +/-2 mm (0.09 +/-0.08 in.)
GRN285L-GKAGKA	SR5, SR5 Premium	A + B: 0°10' +/-0°9' (0.16° +/-0.15°) C - D: 2.29 +/-2 mm (0.09 +/-0.08 in.)
	TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	A + B: 0°10' +/-0°9' (0.16° +/-0.15°) C - D: 2.11 +/-2 mm (0.08 +/-0.08 in.)
	TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	A + B: 0°6' +/-0°9' (0.10° +/-0.15°) C - D: 1.49 +/-2 mm (0.06 +/-0.08 in.)
	LIMITED	A + B: 0°8' +/-0°9' (0.14° +/-0.15°) C - D: 1.60 +/-2 mm (0.06 +/-0.08 in.)

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

6. ADJUST TOE-IN

(a) Detach the rack boot set clips.

(b) Loosen the tie rod end lock nuts.

(d) Check that the lengths of the right and left rack ends are approximately the same.

Standard difference:

0 +/-1 mm (0 +/-0.0394 in.) or less

Text in Illustration

*a	Length
	Lock Nut

(e) Tighten the tie rod end lock nuts.

Torque:

88 N·m {897 kgf·cm, 65 ft·lbf}

(f) Place the boots on the seats and install the clips.

HINT:

Make sure that the boots are not twisted.

7. INSPECT WHEEL ANGLE

(a) 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

Standard Wheel Turning Angle (Unloaded Vehicle):

Vehicle Model	Grade	Inside Wheel Angle	Outside Wheel Angle: Reference
GRN280L-GKAGKA	SR5, SR5 Premium	29°48' to 32°48' (29.80° to 32.80°)	29°33' (29.55°)
LIMITED	29°47' to 32°47' (29.78° to 32.78°)	29°31' (29.52°)
GRN285L-GKAGKA	SR5, SR5 Premium	30°20' to 33°20' (30.33° to 33.33°)	29°28' (29.47°)
TRD Off-Road, TRD Off-Road Premium (w/o KDSS)	30°20' to 33°20' (30.33° to 33.33°)	29°27' (29.45°)
TRD Off-Road, TRD Off-Road Premium (w/ KDSS)	30°17' to 33°17' (30.28° to 33.28°)	29°23' (29.38°)
LIMITED	30°18' to 33°18' (30.30° to 33.30°)	29°24' (29.40°)

Vehicle Model

Grade

Inside Wheel Angle

Outside Wheel Angle: Reference

GRN280L-GKAGKA

SR5, SR5 Premium

29°48' to 32°48'

(29.80° to 32.80°)

29°33'

(29.55°)

LIMITED

29°47' to 32°47'

(29.78° to 32.78°)

29°31'

(29.52°)

GRN285L-GKAGKA

SR5, SR5 Premium

30°20' to 33°20'

(30.33° to 33.33°)

29°28'

(29.47°)

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

30°20' to 33°20'

(30.33° to 33.33°)

29°27'

(29.45°)

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

30°17' to 33°17'

(30.28° to 33.28°)

29°23'

(29.38°)

LIMITED

30°18' to 33°18'

(30.30° to 33.30°)

29°24'

(29.40°)

If the right and left inside wheel angles differ from the specified range, check the right and left rack end lengths.

8. PLACE FRONT WHEELS FACING STRAIGHT AHEAD

9. PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION

HINT:

Perform the yaw rate sensor zero point calibration (See page ).

10. PERFORM INITIALIZATION

HINT:

Some systems need to be initialized after the wheel alignment is adjusted (See page ).

Front Wheel Alignment

...

Front Suspension

...

Other materials about Toyota 4Runner:

Open or Short in Rear Speed Sensor RH Circuit (C1407,C1408)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1407 C1408 Either condition is met: An open in the speed sensor signal circui ...

Inspection
INSPECTION PROCEDURE 1. INSPECT SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY (a) for Driver Side: (1) Check the operation of the separate type front seat cushion spring assembly (slide motor). Check that the separate type front seat c ...