2001 TOYOTA SEQUOIA flat tire

SS0OJ±22
± SERVICE SPECIFICATIONSSUSPENSION AND AXLE
SS±31
173 Author: Date:
2005 SEQUOIA (RM1146U)
SUSPENSION AND AXLE
SERVICE DATA
Tire size: P245/70R16 Front
Rear220 kPa (2.2 kgf/cm2, 32 psi)
240 kPa (2.4 kgf/cm2, 35 psi)
Cold tire inflation
pressureTire size: P265/70R16 Front
Rear220 kPa (2.2 kgf/cm2, 32 psi)
220 kPa (2.2 kgf/cm2, 32 psi)ressure
Tire size: P265/65R17 Front
Rear220 kPa (2.2 kgf/cm2, 32 psi)
220 kPa (2.2 kgf/cm2, 32 psi)
Vehicle height (Except air suspension models)
UCK35L±GKBSKA
Tire size: P245/70R16 Front:
A*1 ± B*2
Rear: C*3 ± D*4
Tire size: P265/70R16 and P265/65R17
Front:
A*1 ± B*2
Rear: C*3 ± D*4
69.7 mm (2.74 in.)
76.2 mm (3.00 in.)
69.5 mm (2.74 in.)
75.5 mm (2.97 in.)
UCK35L±GKBLKA Front:
A*1 ± B*2
Rear: C*3 ± D*471.6 mm (2.82 in.)
77.3 mm (3.04 in.)
UCK45L±GKBSKA Front:
A*1 ± B*2
Rear: C*3 ± D*461.6 mm (2.43 in.)
63.8 mm (2.51 in.)
Front wheel
UCK45L±GKBLKA Front:
A*1 ± B*2
Rear: C*3 ± D*462.8 mm (2.47 in.)
65.2 mm (2.57 in.)
Front wheel
Alignment
Vehicle height (Except air suspension models)g
UCK35L±GKBSKA
Tire size: P245/70R16 Front:
A*1 ± B*2
Rear: C*3 ± D*4
Tire size: P265/70R16 and P265/65R17
Front:
A*1 ± B*2
Rear: C*3 ± D*4
53.5 ± 83.5 mm (2.11 ± 3.29 in.)
74.8 ± 104.8 mm (2.94 ± 4.13 in.)
53.3 ± 83.3 mm (2.10 ± 3.28 in.)
74.1 ± 104.1 mm (2.92 ± 4.10 in.)
UCK35L±GKBLKA Front:
A*1 ± B*2
Rear: C*3 ± D*455.3 ± 85.3 mm (2.18 ± 3.36 in.)
74.6 ± 104.6 mm (2.94 ± 4.12 in.)
UCK45L±GKBSKA Front:
A*1 ± B*2
Rear: C*3 ± D*445.5 ± 75.5 mm (1.79 ± 2.97 in.)
61.0 ± 91.0 mm (2.40 ± 3.58 in.)
UCK45L±GKBLKA Front:
A*1 ± B*2
Rear: C*3 ± D*446.8 ± 76.8 mm (1.84 ± 3.02 in.)
61.3 ± 91.3 mm (2.41 ± 3.59 in.)
A*1: Ground clearance of the front drive shaft center
B*
2: Ground clearance of the front adjusting cam bolt center
C*
3: Ground clearance of the rear axle shaft center
D*
4: Ground clearance of the rear lower control arm front bolt center

± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
DI±801
995 Author: Date:
2005 SEQUOIA (RM1146U)

When the spare tire is not within the receivable range of the electric wave, a signal may not be
received because spare tires are fixed. Accordingly, the system may not function properly. If
there is a possibility that the TPWS system does not receive a signal from the spare tire, rotate
the tire 90°.
HINT:

If any other wheels than the specified ones are used, the system may not function properly because
the radio waves are differently transmitted from the tire pressure sensor.

Depending on the tire type, the system may not function properly even though the specified wheels
are used.
(c) The average use life of the grommet of the tire pressure monitor valve sub±assy is approximately 5
years, at which time it must be replaced.
(d) After removing and installing the ECU or a sensor, output a diagnosis code and check that it is a normal
code.
3. FUNCTION OF COMPONENTS
ComponentsFunction
Tire pressure monitor valve sub±assy
Combined as a single unit with a disc wheel air valve, it measures tire pressure and
temperature and transmits an ID number for measurement value and identification.
Built±in the battery.
Tire pressure monitor receiver assyReceives and transmits a necessary signal from the transmitter to the tire pressure
monitor ECU.
Tire pressure monitor ECU
Receives the signal from the receiver and identifies it as vehicle's own signal. If the
measurement value is equal to or lower than the specified value, it transmits a sig-
nal so that the air pressure warning lamp on the combination meter comes on.
Tire pressure warning lampLocated in the combination meter, it informs the driver of lowered tire air pressure
and system failure.
Tire pressure warning reset switchEnters the initialization mode for tire or wheel replacement, or tire rotation
4. TIRE PRESSURE WARNING RESET SWITCH

By operating the tire pressure warning reset switch, the tire pressure monitor ECU can be set to issue
a warning at an inflation pressure that corresponds to the type of tires. Therefore, the dealer must set
the warning threshold to the proper value in order to comply with the local regulations.

Operate the tire pressure warning reset switch only after the inflation pressures of all 5 tires (including
the spare) have been adjusted on the vehicle.

To initialize the system, press and hold the tire pressure warning reset switch for 3 seconds or longer
with the ignition switch ON. After the system has been initialized, the warning lamp blinks 3 times (1
second ON, 1 second OFF).

During initialization, the tire pressure monitor valve sub±assy measures the inflation pressure of the
tires, and registers the signals that are transmitted into the tire pressure monitor ECU at a frequency
of one per minute. The initialization process is completed when the signals from the 5 tires have been
received.

The initialization process is canceled if the ignition switch is turned OFF during initialization. To initialize
again, the tire pressure warning reset switch must be pressed again. For this reason, once the tire pres-
sure warning reset switch has been pressed, turning OFF the ignition switch is not recommended for
a minimum of 20 minutes.

DIDK5±01
DI±822
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1016 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
(a) Connect the hand±held tester to DLC3.
(b) Turn the ignition switch to the ON position.
(c) Following the display on the hand±held tester, read the ºDATA LISTº.
ItemMeasurement item/
Range (Display)Normal ConditionDiagnostic Note
MODE STATUS
Tire pressure warning system
mode/NORMAL or REG 2nd or
REG M or TESTNORMAL: Normal mode
TEST: Test mode±
MAIN TIRENumber of main tire ID to be regis-
tered/0 or 1 or 2 or 3 or 4 or 50 to 5 should be displayed±
2ND TIRENumber of 2ND tire ID to be regis-
tered/0 to 1 or 2 or 3 or 4 or 50 to 5 should be displayed±
SELECT SWSelect switch/Main, 2ndMain±
INITIAL SWInitialization switch/ON, OFFON: Switch on
OFF: Switch off±
VEHICLE SPEED
Vehicle speed reading/
min.: 0 km/h (0 mph),
max.: 255 km/h (158 mph)
Actual vehicle speedSpeed indicated on the
combination meter
REGIT ID1 CODERegistered ID1 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID1 is displayed±
REGIT ID2 CODERegistered ID2 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID2 is displayed±
REGIT ID3 CODERegistered ID3 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID3 is displayed±
REGIT ID4 CODERegistered ID4 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID4 is displayed±
REGIT ID5 CODERegistered ID5 code/min.: 0,
max.: FFFFFFFThe ID No. registered in the trans-
mitter ID5 is displayed±
TRANS STATUSID code transmission status/
FINISH or NOWFINISH or NOW±
TIREPRESS1
ID1 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS2
ID2 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS3
ID3 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS4
ID4 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS5
ID5 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±

DI±842
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1036 Author: Date:
2005 SEQUOIA (RM1146U)
DTC C2141/41 Transmitter ID1 Error
DTC C2142/42 Transmitter ID2 Error
DTC C2143/43 Transmitter ID3 Error
DTC C2144/44 Transmitter ID4 Error
DTC C2145/45 Transmitter ID5 Error
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C2141/41
C2142/42
C2143/43
C2144/44
C2145/45
If an ºERRORº signal is received 3 times consecutively, the
tire pressure monitor valve sub±assy will be judged as de-
fective and these DTCs will be output.
This will happen under the situations where the inflation
pressure is out of the specified range 0 to 637.5 kPa (0 to
6.48 kgf/cm
2, 0 psi to 92.2 psi), the temperature inside the
tire is out of the specified range ±40 to 215C (±40 to 419
F), or an error occurs in the tire pressure monitor valve
sub±assy, etc.

Tire pressure monitor valve sub±assy

Tire pressure monitor ECU

Tire pressure monitor receiver assy
HINT:
It is necessary to perform the procedure to identify the tire pressure monitor valve sub±assy that is malfunc-
tioning because it cannot be identified by the output DTC.
DIDK9±01

DI±882
± DIAGNOSTICSTIRE PRESSURE WARNING SYSTEM
1076 Author: Date:
2005 SEQUOIA (RM1146U)
3 Using hand±held tester, check the tire pressure data of each wheel.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch to the ON position, and push the hand±held tester main switch ON.
(c) Select the item below in the DATA LIST, and read its value displayed on the hand±held tester.
TIRE PRESSURE:
ItemMeasurement item/
Range (Display)Normal ConditionDiagnostic Note
TIREPRESS1
ID1 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS2
ID2 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS3
ID3 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS4
ID4 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
TIREPRESS5
ID5 tire inflation pressure/
min.: 0 kPa (0 kgfVcm2, 0 psi),
max.: 637.5 kPa (6.48 kgfVcm2,
92.2 psi)Actual tire inflation pressure±
CHECK:
Check the tire pressure data of each tire.
NEXT
4 Is any of the tire pressure data 120 kPa (1.2 kgf/cm2, 17 psi)?
No The detected DTC is for the front right wheel
transmitter.
Ye s
5 Rapidly reduce the pressure of front left wheel to 120 kPa (1.2 kgf/cm2, 17 psi).
NEXT

SA140±10
± SUSPENSION AND AXLETROUBLESHOOTING
SA±1
2997 Author: Date:
2005 SEQUOIA (RM1146U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Bottoming
1. Vehicle (Overloaded)
2. Spring (Weak)
3. Shock absorber (Worn)±
SA±63
SA±135
SA±66
SA±135
Sways/pitches
1. Tire (Worn or improperly inflated)
2. Stabilizer bar (Bent or broken)
3. Shock absorber (Worn)SA±3
SA±90
SA±149
SA±66
SA±135
Front wheel shimmy
1. Tire (Worn or improperly inflated)
2. Wheel (Out of balance)
3. Shock absorber (Worn)
4. Wheel alignment (Incorrect)
5. Ball joints (Worn)
6. Hub bearing (Loose or worn)
7. Steering linkage (Loose or worn)
8. Steering gear (Out of adjustment or broken)SA±3
SA±3
SA±66
SA±4
SA±83
SA±88
SA±21
±
SR±37
Abnormal tire wear
1. Tire (Improperly inflated)
2. Wheel alignment (Incorrect)
3. Shock absorber (Worn)
4. Suspension parts (Worn)SA±3
SA±4
SA±66
SA±139
±
Noise in front differential
1. Oil level (Low or wrong grade)
2. Excessive backlash between pinion and ring gear
3. Ring, pinion or side gear (Worn or chipped)
4. Pinion shaft bearing (Worn)
5. Side bearing (Worn)
6. Differential bearing (Loose or worn)SA±38
SA±50
SA±50
SA±50
SA±50
SA±50
Oil leak from front differential
1. Oil level (Too high or wrong grade)
2. Front differential rear oil seal (Worn or damaged)
3. Side gear oil seal (Worn or damaged)
4. Companion flange (Loose or damaged)
5. Side gear shaft (Damaged)SA±38
SA±38
SA±50
SA±50
SA±50
Noise in rear axle
1. Oil level (Low or wrong grade)
2. Excessive backlash between pinion and ring gear
3. Ring, pinion or side gear (Worn or chipped)
4. Pinion shaft bearing (Worn)
5. Axle shaft bearing (Worn)
6. Differential bearing (Loose or worn)SA±105
SA±109
SA±109
SA±109
SA±94
SA±109
Oil leak from rear axle1. Oil seal (Worn or damaged)
2. Rear axle housing (Cracked)SA±94
±
Oil leak from rear differential
1. Oil level (Too high or wrong grade)
2. Oil seal (Worn or damaged)
3. Companion flange (Loose or damaged)SA±105
SA±105
SA±109

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.

SA17H±11
R03031
F13676
Front (A)(B)
R07928
± SUSPENSION AND AXLETIRE AND WHEEL
SA±3
2999 Author: Date:
2005 SEQUOIA (RM1146U)
TIRE AND WHEEL
INSPECTION
1. INSPECT TIRE
(a) Check the tires for wear and proper inflation pressure.
Cold tire inflation pressure:
Tire sizeFront
kPa (kgf/cm2, psi)
Rear
kPa (kgf/cm2, psi)
P245/70R16220 (2.2, 32)240 (2.4, 35)
P265/70R16220 (2.2, 32)220 (2.2, 32)
P265/65R17220 (2.2, 32)220 (2.2, 32)
(b) Using a dial indicator, check the tire runout.
Tire runout: 3.0 mm (0.118 in.) or less
2. ROTATING TIRE
HINT:

Rotate tires as shown in the illustration.

Rotate as shown in (B) if the spare tire is included in the
rotation.
3. INSPECT WHEEL BALANCE
(a) Check and adjust the Off±the±car balance.
(b) If necessary, check and adjust the On±the±car balance.
Imbalance after adjustment: 14.0 g (0.031 lb) or less
4. CHECK FRONT SUSPENSION FOR LOOSENESS
5. CHECK STEERING LINKAGE FOR LOOSENESS
6. CHECK BALL JOINT FOR LOOSENESS
7. CHECK SHOCK ABSORBER WORKS PROPERLY

Check if oil leaks.

Check the mounting bushings for wear.

Bounce front and rear of the vehicle.