engine TOYOTA SEQUOIA 2001 Service Repair Manual

F19319
2WD/4HI Switch
F19320
4LO Switch
F19321
Differential Lock Switch
TR±40
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2978 Author: Date:
2005 SEQUOIA (RM1146U)
(f) Push the 2WD/4HI switch once again.
(g) Check that the 4WD and center differential lock indicator
lights go off after blinking.
4. INSPECT 2WD e 4LO (4WD and differential lock
ºFREEº)
(a) Start the engine.
(b) Push the 4LO switch once.
(c) Check that the 4LO indicator light stays lit after blinking.
(The 4WD and center differential lock indicator lights blink
while shifting.)
(d) Push the 2WD/4HI switch once.
Check that the 4LO indicator light goes off after blinking.
(The 4WD and center differential lock indicator lights blink
while shifting.)
5. INSPECT 4LO (4WD and differential lock ºFREEº) e
4LO (4WD and differential lock ºLOCKº)
(a) Start the engine.
(b) Push the 4LO switch once.
(c) Check that the 4LO indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the differential lock switch once again.
(g) Check that the center differential lock indicator light goes
off after blinking.

F19322
4LO Switch
F19323
4LO Switch
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±41
2979 Author: Date:
2005 SEQUOIA (RM1146U)
6. INSPECT 4HI (4WD and differential lock ºFREEº) e
4LO (4WD and differential lock ºFREEº)
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the 4LO switch once.
(e) Check that the 4WD indicator light goes off and the 4LO
indicator light stays lit after blinking.
(f) Push the 4LO switch once again.
(g) Check that the 4LO indicator light goes off after blinking
and the 4WD indicator light comes on.
7. INSPECT 4HI (4WD and differential lock ºLOCKº) e
4LO (4WD and differential lock ºLOCKº)
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the 4LO switch once.
(g) Check that the 4WD indicator light goes off and the 4LO
indicator light stays lit after blinking.
(h) Push the 4LO switch once again.
(i) Check that the 4LO indicator light goes off after blinking
and the 4WD indicator light comes on.

F19324
2WD/4HI Switch
F19325
A GND
4LO
CPU 4WD
B TR±42
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2980 Author: Date:
2005 SEQUOIA (RM1146U)
8. INSPECT 4LO (4WD and differential lock ºLOCKº) "
2WD
(a) Start the engine.
(b) Push the 4LO switch once.
(c) Check that the 4LO indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the 2WD/4HI switch once.
(g) Check that the 4LO and center differential lock indicator
lights go off after the 4LO and 4WD indicators are blink-
ing.
9. INSPECT 2WD/4HI, 4LO AND DIFFERENTIAL LOCK
SWITCH CONTINUITY
(a) Remove the instrument panel finish lower panel.
(b) Inspect the continuity between each terminal.
Switch positionTester connectionSpecified condition
Diff. Lock OFFB±8 ± A±10No continuity
Diff. Lock Hold ONB±8 ± A±10Continuity
4LO OFFB±9 ± A±10No continuity
4LO Hold ONB±9 ± A±10Continuity
2WD/4HI OFFB±10 ± A±10No continuity
2WD/4HI Hold ONB±10 ± A±10Continuity
If continuity is not as specified, replace the instrument panel fin-
ish lower panel.

SA24L±03
F06624
R12863
SST
R13233
± SUSPENSION AND AXLEFRONT DRIVE SHAFT
SA±31
3027 Author: Date:
2005 SEQUOIA (RM1146U)
REMOVAL
1. REMOVE FRONT WHEEL
2. REMOVE ENGINE UNDER COVER
3. DRAIN DIFFERENTIAL OIL
4. REMOVE DRIVE SHAFT LOCK NUT
(a) Using a screwdriver and hammer, remove the grease cap.
(b) Remove the cotter pin and lock cap.
(c) While applying the brakes, remove the lock nut.
5. DISCONNECT LOWER SUSPENSION ARM FROM
LOWER BALL JOINT
(a) Remove the cotter pin and nut.
(b) Using SST, disconnect the lower suspension arm from the
lower ball joint.
SST 09628±62011
6. DISCONNECT DRIVE SHAFT FROM STEERING
KNUCKLE
(a) Using a plastic hammer, disengage the drive shaft from
the axle hub.
(b) Push the steering knuckle outward and disconnect the
drive shaft from the steering knuckle.
NOTICE:
Be careful not to damage the oil seal, boots and dust seal.
7. LH drive shaft:
REMOVE LH SHOCK ABSORBER (See page SA±64)

SA14I±10
SA±36
± SUSPENSION AND AXLEFRONT DRIVE SHAFT
3032 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL DRIVE SHAFT TO DIFFERENTIAL
(a) Install a new snap ring to the inboard joint shaft.
(b) Apply gear oil to the inboard joint shaft and differential case sliding surface.
(c) Set the snap ring with opening side facing downward.
(d) Using a brass bar and hammer, install the drive shaft.
NOTICE:
Be careful not to damage the dust cover and oil seal.
HINT:
Whether the inboard joint shaft is in contact with the pinion shaft or not can be known from the sound or feel-
ing when driving.
(e) Check that there is 2 ± 3 mm (0.08 ± 0.12 in.) of play in the axial direction.
(f) Check that the drive shaft cannot be removed by hand.
2. LH drive shaft:
INSTALL LH SHOCK ABSORBER (See page SA±70)
3. CONNECT DRIVE SHAFT TO STEERING KNUCKLE
NOTICE:
Be careful not to damage the oil seal, boots and dust seal.
4. CONNECT LOWER SUSPENSION ARM TO LOWER BALL JOINT
(a) Connect the lower suspension arm to the lower ball joint.
(b) Install the nut and a new cotter pin.
If the holes for the cotter pin are not aligned, tighten the nut further up to 60°.
HINT:
Face the hole for the cotter pin forward.
Torque: 140 N´m (1,450 kgf´cm, 103 ft´lbf)
5. INSTALL DRIVE SHAFT LOCK NUT
(a) While applying brakes, install the nut.
Torque: 235 N´m (2,400 kgf´cm, 173 ft´lbf)
(b) Install the lock cap and a new cotter pin.
If the holes for the cotter pin are not aligned, tighten the nut further up to 60°.
6. FILL DIFFERENTIAL WITH HYPOID GEAR OIL (See page SA±38)
7. INSTALL ENGINE UNDER COVER
8. INSTALL FRONT WHEEL
Torque: 110 N´m (1,150 kgf´cm, 83 ft´lbf)

SA23L±04
Z00638
SST
R13369
SST
R13370
SST
R13371
SST SA±38
± SUSPENSION AND AXLEFRONT DIFFERENTIAL REAR OIL SEAL
3034 Author: Date:
2005 SEQUOIA (RM1146U)
REPLACEMENT
1. REMOVE ENGINE UNDER COVER
2. DRAIN DIFFERENTIAL OIL
3. REMOVE FRONT PROPELLER SHAFT
(See page PR±7)
4. REMOVE COMPANION FLANGE
(a) Using a chisel and hammer, loosen the staked part of the
nut.
(b) Using SST to hold the flange, remove the nut.
SST 09330±00021
(c) Using SST, remove the companion flange.
SST 09950±30012 (09951±03010, 09953±03010,
09954±03010, 09955±03030, 09956±03020)
5. REMOVE OIL SEAL AND OIL SLINGER
(a) Using SST, remove the oil seal.
SST 09308±10010
(b) Remove the oil slinger.
6. REMOVE REAR BEARING AND BEARING SPACER
(a) Using SST, remove the rear bearing from the drive pinion.
SST 09556±22010
(b) Remove the bearing spacer.
7. INSTALL BEARING SPACER, REAR BEARING AND
OIL SLINGER
(a) Install a new bearing spacer and place the rear bearing
and oil slinger.

R13368
SST
R13374
SST
4.5 ± 0.3 mm
(0.177 ± 0.012 in.)
FA1083
SST
FA1084
R13338
Less than
5 mm (0.20 in.)
± SUSPENSION AND AXLEFRONT DIFFERENTIAL REAR OIL SEAL
SA±39
3035 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Using SST and the companion flange, install the rear
bearing, then remove the companion flange.
SST 09950±30012 (09951±03010, 09953±03010,
09954±03010, 09955±03030, 09956±03020)
8. INSTALL OIL SEAL
(a) Coat a new oil seal lip with MP grease.
(b) Using SST and a hammer, install the oil seal.
SST 09554±22010
Oil seal drive in depth: 4.5 ± 0.3 mm (0.177 ± 0.012 in.)
9. INSTALL COMPANION FLANGE
(a) Place the companion flange on the drive pinion.
(b) Coat the threads of a new nut with hypoid gear oil.
(c) Using SST to hold the flange, torque the nut.
SST 09330±00021
Torque: 108 N´m (1,100 kgf´cm, 80 ft´lbf)
10. ADJUST DRIVE PINION PRELOAD
(See page SA±50)
11. STAKE DRIVE PINION NUT
12. INSTALL FRONT PROPELLER SHAFT
(See page PR±9)
13. FILL DIFFERENTIAL WITH HYPOID GEAR OIL
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
Oil type: Hypoid gear oil API GL±5
Recommended oil viscosity: SAE 75W±90
Capacity: 1.15 liters (1.22 US qts, 1.01 Imp. qts)
14. INSTALL ENGINE UNDER COVER

F16839
Do not extend
the rear pneumatic
cylinder
Hole
Seating Pin SA±132
± SUSPENSION AND AXLEREAR PNEUMATIC CYLINDER
3128 Author: Date:
2005 SEQUOIA (RM1146U)
HINT:
Perform the following before installation.
When using safety stands and jack:
(1) Jack up the rear axle until the bottom of the rear
pneumatic cylinder touches the rear axle and fit the
seating pin on the lower side of the rear pneumatic
cylinder into the rear axle.
NOTICE:

Do not extend the rear pneumatic cylinder in order to
fit the seating pin into the hole.

Make sure that the seating pin on the lower side of the
rear pneumatic cylinder fits in the hole in the rear
axle.
(2) Remove the safety stands with care not to extend
the rear pneumatic cylinder when jacking down the
vehicle till it sits on the ground.
NOTICE:
Make sure that the diaphragm (rubber part) of the pneumat-
ic cylinder is not deformed.
(3) Start the engine and replenish the rear pneumatic
cylinder with air.
(e) When using a swing arm type lift:
(1) Lower the vehicle till the tires hit the ground, and
continue lowering slowly until the bottom of the rear
pneumatic cylinder touches the rear axle.
(2) Align the seating pin on the cylinder with the hole in
the rear axle and install the rear pneumatic cylinder
on the rear axle.
NOTICE:

Do not extend the rear pneumatic cylinder by lifting
up the rear axle housing after fitting the seating pin.

Make sure that the diaphragm (rubber part) of the
pneumatic cylinder is not deformed.
(3) Lower the lift carefully so as not to extend the rear
pneumatic cylinder.
NOTICE:
Make sure that the diaphragm (rubber part) of the pneumat-
ic cylinder is not deformed.
(4) Start the engine and replenish the rear pneumatic
cylinder with air.

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.)

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.)