width TOYOTA HIGHLANDER 2001 Service Repair Manual

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This illustration indicates typical tire
size.
1. Tire use (P=Passenger car,
T=Temporary use)
2. Section width (in millimeters)
3. Aspect ratio (tire height to section
width)
4. Tire construction code (R=Radial,
D=Diagonal)
5. Wheel diameter (in inches)
6. Load index (2 digits or 3 digits)
7. Speed symbol (alphabet with one
letter)1. Section width
2. Tire height
3. Wheel diameter1. Bead
2. Sidewall
3. Shoulder
4. Tread
5. Belt
6. Inner liner
7. Reinforcing rubber
8. Carcass
9. Rim lines
10.Bead wires
11. Chafer
ÐTire size ÐName of each section of tire

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This information has been prepared
in accordance with regulations issued
by the National Highway Traffic Safe-
ty Administration of the U.S. Depart-
ment of Transportation. It provides
the purchasers and/or prospective
purchasers of Toyota vehicles with in-
formation on uniform tire quality grad-
ing.
Your Toyota dealer will help answer
any questions you may have as you
read this information.
DOT quality gradesÐAll passenger
vehicle tires must conform to Fed-
eral Safety Requirements in addi-
tion to these grades. Quality
grades can be found where appli-
cable on the tire sidewall between
tread shoulder and maximum sec-
tion width. For example: Treadwear
200 Traction AA Temperature ATreadwearÐThe treadwear grade is
a comparative rating based on the
wear rate of the tire when tested un-
der controlled conditions on a speci-
fied government test course. For ex-
ample, a tire graded 150 would wear
one and a half (1- 1/2) times as well
on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual
conditions of their use, however, and
may depart significantly from the
norm due to variations in driving hab-
its, service practices and differences
in road characteristics and climate.Traction AA, A, B, CÐThe traction
grades, from highest to lowest, are
AA, A, B, and C, and they represent
the tire's ability to stop on wet pave-
ment as measured under controlled
conditions on specified government
test surfaces of asphalt and concrete.
A tire marked C may have poor trac-
tion performance.
Warning: The traction grade assigned
to this tire is based on braking
(straight ahead) traction tests and
does not include cornering (turning)
traction.
ÐUniform tire quality grading

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Ti r e relat ed ter mMeaning
Normal occupant weight68 kg (150 lb.) times the number of occupants specified in the second
column of Table 1 that follows
Occupant distributiondistribution of occupants in a vehicle as specified in the third column of Table
1 that follows
Production options weight
the combined weight of those installed regular production options weighing
over 2.3 kg (5 lb.) in excess of those standard items which they replace,
not previously considered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty battery, and special
trim
Recommended inflation pressurecold tire inflation pressure recommended by a manufacturer
Rima metal support for a tire or a tire and tube assembly upon which the tire beads
are seated
Rim diameter (Wheel diameter)nominal diameter of the bead seat
Rim size designationrim diameter and width
Rim type designationthe industry of manufacturer 's designation for a rim by style or code
Rim widthnominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)the rated cargo and luggage load plus 68 kg (150 lb.) times the vehicle's desig-
nated seating capacity
Vehicle maximum load on the tirethe load on an individual tire that is determined by distributing to each axle
its share of the maximum loaded vehicle weight and dividing by two

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Model:
2AZ- FE and 3MZ- FE
Type:
2AZ- FE engine
4 cylinder in line, 4 cycle, gasoline
3MZ- FE engine
6 cylinder V type 4 cycle, gasoline
Bore and stroke, mm (in.):
2AZ- FE engine
88.5
96.0 (3.48
3.78)
3MZ- FE engine
92.0
83.0 (3.62
3.27)
Displacement, cm
3 (cu. in.):
2AZ- FE engine
2362 (144.1)
3MZ- FE engine
3311 (202.1)
Dimensions and weights
Overall length mm (in.)
Overall width mm (in.)
Overall height
*
1mm (in.)
Wheelbase mm (in.)
Front tread mm (in.)
Rear tread mm (in.)
Vehicle capacity
weight (occupants
+ luggage) kg (lb.)Two- wheel drive models Four- wheel drive models
4690 (184.6)
4690 (184.6)
1825 (71.9) 1825 (71.9)
1690 (66.5)
*
2
1745 (68.7)*
3
2715 (106.9) 2715 (106.9)
1580 (62.2) 1575 (62.0)
1565 (61.6) 1555 (61.2)
390 (860)
*
4
526 (1159)*
5390 (860)*
4
526 (1159)*
5
*
1
: Unladen vehicle*
2: Without roof rails*
3: With roof rails*
4: Without third seat*
5: With third seat*
6: 2AZ- FE engine*
7: 3MZ- FE engine*
8: Without towing package*
9: With towing package1680 (66.1)
*
2
1735 (68.3)*
3
Towing capacity
(trailer weight +
cargo weight) kg (lb.)680 (1500)*
6, 8
1360 (3000)*
6, 9
907 (2000)*
7, 8
1585 (3500)*
7, 9
680 (1500)*
6, 8
1360 (3000)*
6, 9
907 (2000)*
7, 8
1585 (3500)*
7, 9
Engine

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Four- wheel drive models:
Do not use snow tires of different
brands, sizes, construction or tread
patterns, as this may cause danger-
ous handling characteristics result-
ing in loss of control.
SNOW TIRE INSTALLATION
Snow tires should be installed on all
wheels.
Installing snow tires on the front wheels
only can lead to an excessive difference
in road grip capability between the front
and rear tires, which could cause loss of
vehicle control.
When storing removed tires, you should
store them in a cool dry place.
Mark the direction of rotation and be sure
to install them in the same direction when
replacing.
CAUTION

Do not drive with the snow tires
incorrectly inflated.

Never drive over 120 km/h (75 mph)
with any type of snow tires.
Side chain
Cross chain
TIRE CHAIN SELECTION
Use the tire chains of correct size.
Use the following type chains.
mm (in.)
A Diameter of side chain 3 (0.12)
B Width of side chain 10 (0.39)
C Length of side chain 30 (1.18)
D Diameter of cross chain 4 (0.16)
E Width of cross chain 14 (0.55)
F Length of cross chain 25 (0.98)
Regulations regarding the use of tire
chains vary according to location or
type of road, so always check them
before installing chains.
NOTICE
If the wrong combination of tire and
chain is used, the chains could dam-
age the vehicle body.
CHAIN INSTALLATION
Install the chains on the front tires as
tightly as possible. Do not use tire
chains on the rear tires. Retighten
chains after driving 0.5Ð1.0 km
(1/4Ð1/2 mile).
When installing chains on your tires, care-
fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so remove
the covers before putting on the chains.

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CAUTION

Do not exceed 50 km/h (30 mph) or
the chain manufacturer 's recom-
mended speed limit, whichever is
lower.

Drive carefully avoiding bumps,
holes, and sharp turns, which may
cause the vehicle to bounce.

Avoid sharp turns or locked- wheel
braking, as use of chains may ad-
versely affect vehicle handling.

When driving with chains installed,
be sure to drive carefully. Slow
down before entering curves to
avoid losing control of the vehicle.
Otherwise an accident may occur.
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion, the
wheel should be replaced.
If you fail to replace a damaged wheel,
the tire may slip off the wheel or cause
loss of handling control.
WHEEL SELECTION
When replacing wheels, care should be
taken to ensure that the wheels are re-
placed by ones with the same load ca-
pacity, diameter, rim width, and offset.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may
adversely affect handling, wheel and bear-
ing life, brake cooling, speedometer/odom-
eter calibration, stopping ability, headlight
aim, bumper height, vehicle ground clear-
ance, and tire or snow chain clearance to
the body and chassis.Replacement with used wheels is not rec-
ommended as they may have been sub-
jected to rough treatment or high mileage
and could fail without warning. Also, bent
wheels which have been straightened may
have structural damage and therefore
should not be used. Never use an inner
tube in a leaking wheel which is designed
for a tubeless tire.
CAUTION
Observe the following instructions.
Otherwise, an accident may occur re-
sulting in death or serious injuries.

Do not use wheels other than the
manufacturer 's recommended size,
as this may cause dangerous han-
dling characteristics resulting in
loss of control.

Four- wheel drive models:
Do not use wheels of different
brands, sizes and types, as this
may cause dangerous handling
characteristics resulting in loss of
control.
Replacing wheels

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Do not store objects which are
higher than the lower edge of the
container.
Do not store objects which are larg-
er than the width of the container.
Type A (rear console)
Type B (luggage compartment)Type C (second seat armrest)
C u p ho ld ers

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2. Slide the cross rails to the appropri-
ate position for loading the luggages
and turn the side knobs clockwise to
tighten the cross rails securely.
Vehicles with the electric moon
roofÐThere are cross rail stoppers on the
roof rails which help you prevent the
cross rails being touched with the tilted up
moon roof.
NOTICE
Vehicles with the electric moon roof
onlyÐDo not remove the cross rail
stoppers, or the moon roof may be
damaged when it is tilted.
3. In order to fix the cross rails to the
appropriate length, turn the upper
knobs clockwise after tightening all
of the side knobs.
CAUTION
Make sure the cross rails are fixed
securely by pushing forward and rear-
ward them. Failure to do so may
cause an unexpected accident or se-
vere injury in the event of emergency
braking or a collision.
Follow the manufacture's instructions and
precautions when installing the attach-
ments or their equivalent.
CAUTION
When you load cargo on the roof lug-
gage carrier, observe the following:
Place the cargo so that its weight
is distributed evenly between the
front and rear axles.
If loading long or wide cargo, never
exceed the vehicle overall length or
width. (See Dimensions and
weightsº on page 406 in Section 8
for information on your vehicle
overall length and width.)
Before driving, make sure the cargo
is securely fastened on the roof
luggage carrier.
Loading cargo on the roof luggage
carrier will make the center of the
vehicle gravity higher. Avoid high
speeds, sudden starts, sharp turns,
sudden braking or abrupt maneu-
vers, otherwise it may result in loss
of control or vehicle rollover due to
failure to operate this vehicle cor-
rectly.

A90346
Reference
A/F Sensor
Heater
Sensor
A1A+ HA1A
Duty
Control ECM
From
Battery
EFI NO. 1
Fuse
A1A-
MREL EFI Relay
+B
AF-
AF+ HT
EFI NO. 2
Fuse
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-71
261 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0031 OXYGEN (A/F) SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 1)
DTC P0032 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK 1 SENSOR 1)
HINT:
Although the title (DTC description) says ºoxygen sensorº, this DTC is related to the ºA/F sensorº.
CIRCUIT DESCRIPTION
Refer to DTC P2195 on page 05-269.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current through the heater. The A/F sen-
sor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0031Heater current of 0.8 A or less when heater operates
(1 trip detection logic)

Open in heater circuit of A/F sensor

A/F sensor heater

EFI relay

ECM
P0032Heater current exceeds 10 A when heater operates
(1 trip detection logic)

Short in heater circuit of A/F sensor

A/F sensor heater

EFI relay

ECM
HINT:
Sensor 1 is the sensor closest to the engine assembly.
05ET1-06

A90346
Reference
Heater
Sensor
Duty
Control ECM
From
Battery
EFI NO. 1
FuseEFI Relay
+B HT
EFI NO. 2
Fuse
MREL OX1B HT1B Heated Oxygen Sensor
OB1- OX E1 05-76
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
266 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0037 OXYGEN SENSOR HEATER CONTROL
CIRCUIT LOW (BANK 1 SENSOR 2)
DTC P0038 OXYGEN SENSOR HEATER CONTROL
CIRCUIT HIGH (BANK 1 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0136 on page 05-1 18.
HINT:
The ECM provides a pulse width a modulated control circuit to adjust current through the heater. The oxygen
sensor heater circuit uses a relay on the +B side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0037
Heater current of less than 0.3 A when the heater operates
with +B greater than 10.5 V
(1 trip detection logic)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

EFI relay

ECM
P0038Heater current exceeds 2 A when heater operates
(1 trip detection logic)
Same as DTC No. P0037
HINT:
Sensor 2 is the sensor farthest away from the engine assembly.
MONITOR DESCRIPTION
The sensing portion of the heated oxygen sensor has a zirconia element that is used to detect oxygen con-
centration in the exhaust. If the zirconia element is at the proper temperature and the difference of the oxy-
gen concentration between the inside and outside surface of the sensor is large, the zirconia element will
generate voltage signals. In order to increase the oxygen concentration detecting capacity in the zirconia
element, the ECM supplements the heat from the exhaust with heat from a heating element inside the sen-
sor. When current in the sensor is out of the standard operating range, the ECM interprets this as a fault in
the heated oxygen sensor and sets a DTC.
Example:
The ECM will set a high current DTC if the current in the sensor is more than 2 A when the heater is OFF.
Similarly, the ECM will set a low current DTC if the current is less than 0.25 A when the heater is ON.
05ETE-05