2001 TOYOTA SEQUOIA height

SA28F±08
START
Preliminary Check
Tire pressure
Vehicle height
Brake dragging ROAD TEST
Does the vehicle lead/pull?
Cross switch front tire & wheel
assemblies (left & right).
Does the vehicle lead/pull in the
same direction as before?
Check front wheel alignment.
Is it within specification?
Adjust front wheel alignment.Reverse the front left side
tire and rebalance it.
Does the vehicle
lead/pull to the left?
COMPLETE
Are the tires uni±directional type?
Choose the position of front tire & wheel
assemblies where there is the least amount of pull.
Increase left front camber and decrease
right front camber until lead/pull is eliminated.Increase right front camber and decrease
left front camber until lead/pull is eliminated.
NO
YES
YES
NO
YES
YES
NO
YES
NO COMPLETE
NONOYES NOIs there steering
off center?
Adjust front tie rods.
NO
YES
Is the lead/pull stronger
than before?
YES
NOTICE : Do not exceed 1° of cross camber.
Do not exceed adjustment range.
Select a flat road where the vehicle can be driven in a straight line for 100 meters at a constant speed
of 35mph. Please confirm safety and set the steering wheel to its straight position. Drive the vehicle in
a straight line for 100 meters at a constant speed of 35mph without holding the steering wheel.
(1) The vehicle can keep straight but the steering wheel has some angle.
STEERING OFF CENTER (See page SR±10)
(2) The vehicle cannot keep straight.
STEERING PULL
YES NO
YES ROAD TEST
Does the vehicle still lead/pull?
NO ROAD TEST
Does the vehicle still lead/pull? ROAD TEST
Does the vehicle still lead/pull?
ROAD TEST
Does the vehicle still lead/pull?NO
Contact your local retail tire distributor.YES
*
*
SA±2
± SUSPENSION AND AXLETROUBLESHOOTING
2998 Author: Date:
2005 SEQUOIA (RM1146U)
REPAIR PROCEDURES
HINT:
This is a flow chart for vehicle pull.

F01718F05219F14317
Front:
Rear:A
B
C
DSA23H±05
SA±4
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
3000 Author: Date:
2005 SEQUOIA (RM1146U)
FRONT WHEEL ALIGNMENT
INSPECTION
NOTICE:
Be sure to perform the zero point calibration of the steering
angle, master cylinder pressure, yaw rate and deceleration
sensors (See page DI±897).
1. MEASURE VEHICLE HEIGHT
Measuring points:
A: Ground clearance of the front drive shaft center
B: Ground clearance of the front adjusting cam bolt center
C: Ground clearance of the rear axle shaft center
D: Ground clearance of the rear lower control arm front bolt cen-
ter
Vehicle height (Except air suspension models):
UCK35L±GKBSKA
Tire size: P245/70R16
Front
Rear
Tire size: P265/70R16 and P265/65R17
Front
Rear
A ± B: 69.7 mm (2.74 in.)
C ± D: 76.2 mm (3.00 in.)
A ± B: 69.5 mm (2.74 in.)
C ± D: 75.5 mm (2.97 in.)
UCK35L±GKBLKA
Front
Rear
A ± B: 71.6 mm (2.82 in.)
C ± D: 77.3 mm (3.04 in.)
UCK45L±GKBSKA
Front
Rear
A ± B: 61.6 mm (2.43 in.)
C ± D: 63.8 mm (2.51 in.)
UCK45L±GKBLKA
Front
Rear
A ± B: 62.8 mm (2.47 in.)
C ± D: 65.2 mm (2.57 in.)
Vehicle height (Air suspension models):
UCK35L±GKBSKA
Tire size: P245/70R16
Front
Rear
Tire size: P265/70R16 and P265/65R17
Front
Rear
A ± B: 68.5 mm (2.69 in.)
C ± D: 74.8 ± 104.8 mm (2.94 ± 4.13 in.)
A ± B: 68.3 mm (2.69 in.)
C ± D: 74.1 ± 104.1 mm (2.92 ± 4.10 in.)
UCK35L±GKBLKA
Front
Rear
A ± B: 70.3 mm (2.77 in.)
C ± D: 74.6 ± 104.6 mm (2.94 ± 4.12 in.)
UCK45L±GKBSKA
Front
Rear
A ± B: 60.5 mm (2.38 in.)
C ± D: 61.0 ± 91.0 mm (2.40 ± 3.58 in.)
UCK45L±GKBLKA
Front
Rear
A ± B: 61.8 mm (2.43 in.)
C ± D: 61.3 ± 91.3 mm (2.41 ± 3.59 in.)
NOTICE:
Before inspecting the wheel alignment, adjust the vehicle
height to the specified value.

Z03382
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
SA±5
3001 Author: Date:
2005 SEQUOIA (RM1146U)
If the vehicle height is not as specified, try to adjust it by pushing
down on or lifting the body.
2. INSTALL CAMBER±CASTER±KINGPIN GAUGE OR
POSITION VEHICLE ON WHEEL ALIGNMENT TES-
TER
Follow the specific instructions of the equipment manufacturer.
3. INSPECT CAMBER, CASTER AND STEERING AXIS
INCLINATION
Camber, caster and steering axis inclination:

Camber
UCK35L±GKBSKA
Right±left error
UCK35L±GKBLKA
Right±left error
UCK45L±GKBSKA
Right±left error
UCK45L±GKBLKA
Right±left error
0°08' ± 45' (0.14° ± 0.75°)
30' (0.5°) or less
0°06' ± 45' (0.10° ± 0.75°)
30' (0.5°) or less
0°17' ± 45' (0.28° ± 0.75°)
30' (0.5°) or less
0°16' ± 45' (0.26° ± 0.75°)
30' (0.5°) or less

Caster (Except air suspension models)
UCK35L±GKBSKA
Tire size: P245/70R16
Tire size: P265/70R16 and P265/65R17
Right±left error
UCK35L±GKBLKA
Right±left error
UCK45L±GKBSKA
Right±left error
UCK45L±GKBLKA
Right±left error
2°56' ± 45' (2.93° ± 0.75°)
2°59' ± 45' (2.98° ± 0.75°)
30' (0.5°) or less
3°02' ± 45' (3.04° ± 0.75°)
30' (0.5°) or less
2°36' ± 45' (2.60° ± 0.75°)
30' (0.5°) or less
2°38' ± 45' (2.64° ± 0.75°)
30' (0.5°) or less

SA2CX±01
F17148260 mm (10.236 in.)
F16838Clip
Center Pin
Slotted
Hole
± SUSPENSION AND AXLEREAR PNEUMATIC CYLINDER
SA±131
3127 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
NOTICE:

Do not extend the pneumatic cylinder by itself. If the
cylinder is fully extended, it cannot be reused.

Do not replenish the pneumatic cylinder by itself with
air.

Do not remove the pneumatic cylinder with air in it.

If reusing the pneumatic cylinder, replace the 2 O±
rings, plate and connector No.2 with new ones.

When installing the pneumatic cylinder, keep the cyl-
inder length 260 mm (10.236 in.) or less.
1. BLEED AIR (See page SA±153)
HINT:
Disconnect the one touch air connector of the height control
valve and bleed the air.
2. REMOVE REAR PNEUMATIC CYLINDER
(a) Jack up the vehicle and support the frame with safety
stands.
NOTICE:

Do the work with the rear axle assy lowered.

Do the work with the shock absorber installed.
(b) Disconnect the height control tube.
(c) Remove the clip on the upper side of the rear pneumatic
cylinder.
HINT:

If the clip cannot be easily removed, thread a wire through
the hole to pull it.

When installing the clip, make sure that the center pin on
the upper side of the rear pneumatic cylinder is in the
slotted hole of the frame.
(d) Remove the rear pneumatic cylinder.

SA2CZ±01
F16823
F14100
ºAº
Air tube
Housing
Connector No. 1
F14101
SST
Air tube
F14102
Plate
O±ringConnector No.2
SST
Air tube
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
SA±153
3149 Author: Date:
2005 SEQUOIA (RM1146U)
ELECTRONIC MODULATED AIR SUSPENSION
PRECAUTION
1. WHEN LIFTING UP VEHICLE
(a) When jacking up or lifting up, stop operation of the air sus-
pension control system by pressing the height control
mode select switch.
2. DISCONNECTION AND CONNECTION OF HEIGHT
CONTROL TUBE
NOTICE:

Disconnection and connection of the height control
tube should be performed by hand to prevent foreign
objects from entering.

Never damage the height control tube.
(a) Disconnect the height control tube.
(1) Pinch ºAº of the connector No. 1 and pull out from
the housing.
(2) Set the SST to the tube.
SST 09730±00010
(3) Insert SST into the housing to expand the claw of
the connector No.2 in the housing.
(4) Pull out the tube with SST inserted.
NOTICE:
Do not pull on the tube with excessive force.

F19817
O±ring
Plate
F19818
CardboardO±ring
Plate
F19819
Connector No.2
F14103
HousingClaw
Connector No. 1
Air tube
Port (Hole)
SA±154
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
3150 Author: Date:
2005 SEQUOIA (RM1146U)
(5) Insert a screwdriver into the circular hole on the
housing, and remove the connector No.2, the 2 O±
rings and the plate from the housing.
HINT:
The O±rings, plate and connector No.2 are non±reusable parts.
(b) Install 2 O±rings and the plate.
(1) Apply MP grease to 2 new O±rings and plate and
install them to the straight tube or an equivalent.
NOTICE:
Install the plate between the O±rings.
Keep foreign matter from adhering to the O±rings and the
height control tube in order to prevent air leaks.
(2) Insert the tube on which the 2 O±rings and plate are
installed into the housing, and then push it in lightly
with a piece of rolled up cardboard.
(3) Push the connector No.2 into the housing to where
a clicking sound is heard.
(c) Install the height control tube.
(1) Push the tube and connector No.1 into the housing
to where a clicking sound is heard.
NOTICE:

The port (hole) of the housing should be set in the
position 90° from the claws of connector No. 1.

Pull the tube lightly to make sure that it is securely
connected.

± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
SA±155
3151 Author: Date:
2005 SEQUOIA (RM1146U)

Prevent foreign matter from being attached to the O±
rings and height control tube. Failure to do so may
cause air leakage.

SA2D0±01
F16824
HIGH
NORMAL
LOW SA±156
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
3152 Author: Date:
2005 SEQUOIA (RM1146U)
ADJUSTMENT
1. ADJUST STANDARD VEHICLE HEIGHT
(a) Release the parking brake and stabilize the suspensions by pushing up and down on the corners of
the vehicle.
(b) Place the shift lever into the ºNº position and settle the tires by moving the vehicle back and forth.
(c) Start the engine.
(d) On the height control switch, first press ºHIGHº to raise the vehicle height, and then change the switch
to ºLOWº to lower it. Perform this operation one more time.
NOTICE:
Make sure to release the parking brake and move the shift lever into the ºNº position.
2. INSPECT TIRE (See page SA±3)
3. MEASURE VEHICLE HEIGHT (See page SA±4)
4. OPERATE HEIGHT CONTROL SWITCH AND CHECK
VEHICLE HEIGHT CHANGE
(a) Start the engine and change the height control switch
from the NORMAL position to the HIGH and LOW posi-
tions.
Check the time until the height adjustment is completed
and the amount of change in vehicle height.
Adjustment time
From operation of height control switch
to start of compressor.Approx. 2 sec.
From start of compressor to completion
of height adjustment.Approx. 20 sec.
Amount of change in vehicle height
HIGH position: 40 mm (1.57 in.)
LOW position:
4WD models: ±30 mm (±1.18 in.)
2WD models: ±15 mm (±0.59 in.)