Page 3161 of 4323
F19820
HIGH
NORMAL
LOW
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
SA±157
3153 Author: Date:
2005 SEQUOIA (RM1146U)
(b) While adjusting vehicle height in the HIGH position, start
the engine and change the height control switch from the
HIGH position to the NORM position.
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 open of exhaust valve.Approx. 2 sec.
From open of exhaust valve to completion
of height adjustment.Approx. 30 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.)
Page 3162 of 4323
F16825
Front SA±158
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
3154 Author: Date:
2005 SEQUOIA (RM1146U)
5. CHECK CONNECTIONS OF TUBES FOR AIR LEAK-
AGE
(a) Set the height control switch in the HIGH position and
raise the vehicle height.
(b) Stop the engine.
(c) Apply soapy water to the connections of the tubes and
check if there is any air leakage.
6. ADJUST VEHICLE HEIGHT
NOTICE:
While adjusting vehicle height, do not put anyone or any-
thing on or in the vehicle as it will affect vehicle height.
(a) Suspend the vehicle height control by pressing the height
control mode select switch.
(b) Put the vehicle on a level surface.
Page 3163 of 4323

F19904
C
D
F16848
F16826Lock Nut
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
SA±159
3155 Author: Date:
2005 SEQUOIA (RM1146U)
(c) Measure the vehicle height (C ± D measurement) on the
right side and left side.
Standard vehicle height value: See page SA±4
(d) If the value in (c) differs from the vehicle height (C ± D
measurement), adjust it by following the procedures be-
low:
(1) Loosen the nut.
(2) Move the height control sensor link back and forth
along the slotted hole of the bracket.
HINT:
Move the link toward the front of the vehicle to raise vehicle
height. Move the link toward the rear of the vehicle to lower ve-
hicle height. Every 1 mm (0.039 in.) change in the installation
position of the link causes vehicle height to change by approxi-
mately 2 mm (0.079 in.).
(3) Tighten the nut.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(e) If the vehicle height cannot be adjusted by performing (d),
adjust it again by following the procedures below.
(1) Loosen the 2 lock nuts of the height control sensor
link.
(2) Adjust the vehicle height to the vehicle height (C ±
D measurement) by turning the link.
HINT:
Extend the link to raise vehicle height. Shorten the link to lower
vehicle height. Every 1 turn of the link causes vehicle height to
change by approximately 4 mm (0.157 in.).
(3) Tighten the 2 lock nuts.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
Page 3164 of 4323
F16827
A
A SA±160
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
3156 Author: Date:
2005 SEQUOIA (RM1146U)
(f) Check that the lengths of the screw parts, ºAº in the il-
lustration, are within the standard values.
Standard length: 6.5 to 15.0 mm (0.26 to 0.59 in.)
(g) Change the vehicle height. (From the normal position to
the high position, and from the high position to the normal
position)
(h) Measure the vehicle height (C ± D measurement) on the
right side and left side.
(i) Check if the vehicle height (C ± D measurement) is within
the specified range.
HINT:
If the values are outside the standard, perform the procedures
from (d) to (i) again.
Page 3165 of 4323
SA0L1±06
F16846
N´m (kgf´cm, ft´lbf): Specified torque
Non±reusable partHeight Control Filter
BracketRear Bumper
Holder Bushing
O±Rings
5.9 (60, 52 in.´lbf)
Height Control Compressor
and Dryer
6.4 (65, 57 in.´lbf)
Height Control Compressor
Hose
Clip
Clip
Clip
Clip
29 (300, 21)
29 (300, 21)
Clip
Height Control Tube
MP greaseBushing
Compressor Cover
± SUSPENSION AND AXLEHEIGHT CONTROL COMPRESSOR AND DRYER
SA±161
3157 Author: Date:
2005 SEQUOIA (RM1146U)
HEIGHT CONTROL COMPRESSOR AND DRYER
COMPONENTS
Page 3166 of 4323

SA2D1±01
F16829
F16830
SA±162
± SUSPENSION AND AXLEHEIGHT CONTROL COMPRESSOR AND DRYER
3158 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE REAR BUMPER (See page BO±6)
2. DISCONNECT HEIGHT CONTROL TUBE
(a) Remove the holder.
(b) Spread the clip and slowly pull the height control tube
straight out.
NOTICE:
Do not remove the clip from the union except when replac-
ing it.
(c) Remove the O±ring.
HINT:
Perform the following before installation:
Coat a new O±ring with MP grease.
Push the air tube in straight to connect it until the clip
makes a ºclickingº sound.
3. REMOVE HEIGHT CONTROL COMPRESSOR AND
DRYER
HINT:
Check for leakage after installation (See page SA±153).
(a) Separate the hose from the compressor cover.
(b) Remove the 3 clips and compressor cover.
(c) Remove the hose.
(d) Disconnect the wire harness from the clamp.
(e) Remove the 3 bolts and height control compressor and
dryer.
Torque: 29 N´m (300 kgf´cm, 21 ft´lbf)
(f) Disconnect the 3 wire harness clamps and hose.
Page 3167 of 4323
F16831
± SUSPENSION AND AXLEHEIGHT CONTROL COMPRESSOR AND DRYER
SA±163
3159 Author: Date:
2005 SEQUOIA (RM1146U)
(g) Remove the 3 bolts, bushing and the bracket from the
height control compressor.
Torque: 5.9 N´m (60 kgf´cm, 52 in.´lbf)
(h) Remove the 2 bolts and the filter from the height control
compressor.
Torque: 6.4 N´m (65 kgf´cm, 56 in.´lbf)
Page 3168 of 4323
SA0L3±03
SA±164
± SUSPENSION AND AXLEHEIGHT CONTROL COMPRESSOR AND DRYER
3160 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
Installation is in the reverse order of removal (See page SA±162).