air TOYOTA COROLLA 2003 E120 / 9.G Manual PDF

’03 Corolla U (L/O 0201)
2152003 MY COROLLA_U (OM12744U)
Take special care when adding air to
the compact spare tire. The smaller
tire size can gain pressure very quick-
ly. Add compressed air in small quanti-
ties and check the pressure often until
it reaches the specified pressure.
Do not bleed or reduce tire pressure
after driving. It is normal for the tire
pressure to be higher after driving.
Never exceed the vehicle capacity
weight. The passenger and luggage
weight should be located so that the
vehicle is balanced.
Be sure to reinstall the tire inflation
valve caps. Without the valve caps,
dirt or moisture could get into the valve
core and cause air leakage. If the caps
have been lost, have new ones put on
as soon as possible.
Tread wear indicator
CHECKING YOUR TIRES
Check the tires tread for the tread wear
indicators. If the indicators show, re-
place the tires.
The tires on your Toyota have builtin
tread wear indicators to help you know
when the tires need replacement. When
the tread depth wears to 1.6 mm (0.06
in.) or less, the indicators will appear. If
you can see the indicators in two or more
adjacent grooves, the tire should be re-
placed. The lower the tread, the higher
the risk of skidding.
The effectiveness of snow tires is lost
if the tread wears down below 4 mm
(0.16 in.). Check the tires regularly for damage
such as cuts, splits and cracks. If any
damage is found, consult with a techni-
cian and have the tire repaired or re-
placed.
Even if the damage does not appear seri-
ous, a qualified technician should examine
the damage. Objects which have pene-
trated the tire may have caused internal
damage.
Any tires which are over 6 years old
must be checked by a qualified techni-
cian even if damage is not obvious.
Tires deteriorate with age even if they
have never or seldom been used.
This applies also to the spare tire and
tires stored for future use.
REPLACING YOUR TIRES
When replacing a tire, use only the
same size and construction as original-
ly installed and with the same or great-
er load capacity.
Using any other size or type of tire may
seriously affect handling, ride, speedome-
ter/odometer calibration, ground clearance,
and clearance between the body and tires
or snow chains.
Checking and replacing tires

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CAUTION
Do not mix radial, bias belted, or
biasply tires on your vehicle. It
can cause dangerous handling char-
acteristics, resulting in loss of con-
trol.
Do not use tires or wheels other
than the manufacturer ’s recom-
mended size.
Toyota recommends all four tires, or at
least both front or rear tires be re-
placed as a set.
See “If you have a flat tire” on page 174
in Section 4 for tire change procedure.
When a tire is replaced, the wheel
should always be balanced.
An unbalanced wheel may affect vehicle
handling and tire life. Wheels can get out
of balance with regular use and should
therefore be balanced occasionally.
When replacing a tubeless tire, the air
valve should also be replaced with a
new one.
Vehicles with compact spare tire
Vehicles without compact spare tire
To equalize the wear and help extend
tire life, Toyota recommends that you
rotate your tires according to the main-
tenance schedule. (For scheduled main-
tenance information, please refer to the
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”.) Howev-
er, the most appropriate timing for tire
rotation may vary according to your
driving habits and road surface condi-
tions.
See “If you have a flat tire” on page 174
in Section 4 for tire change procedure.
When rotating tires, check for uneven
wear and damage. Abnormal wear is usu-
ally caused by incorrect tire pressure, im-
proper wheel alignment, outofbalance
wheels, or severe braking.
CAUTION
Do not include a compact spare tire
when rotating the tires. It is designed
for temporary use only.
Rotating tires

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When installing aluminum wheels,
check that the wheel nuts are tight
after driving your vehicle the first 1600
km (1000 miles).
If you have rotated, repaired, or
changed your tires, check that the
wheel nuts are still tight after driving
1600 km (1000 miles).
When using tire chains, be careful not
to damage the aluminum wheels.
Use only the Toyota wheel nuts and
wrench designed for your aluminum
wheels.
When balancing your wheels, use only
Toyota balance weights or equivalent
and a plastic or rubber hammer.
As with any wheel, periodically check
your aluminum wheels for damage. If
damaged, replace immediately.
Aluminum wheel precautions

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1. Open the hood.LEFTHAND HEADLIGHT: Remove the
clip with a Phillipshead screwdriver
and move the air cleaner duct as
shown in the illustration.
Remove and install the clip as shown in
the following illustrations.Removing clip
Installing clip
Low beam
(outside) High beam
(inside)
2. Turn the bulb base counterclockwise
to the front of the vehicle as shown.
—Headlights

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Instrument panel
Fuses (type A)1. FOG 15 A: Front fog lights
2. HEAD LH UPR 10 A: Lefthand head-
light (high beam)
3. HEAD RH UPR 10 A: Righthand
headlight (high beam), high beam indi-
cator light
4. SPARE 30 A: Spare fuse
5. SPARE 15 A: Spare fuse
6. SPARE 10 A: Spare fuse
7. MAIN 30 A: Starting system, “AM2”
fuse 8. DOME 15 A:
Car audio system, clock,
personal lights, interior light, trunk light,
open door warning light, wireless re-
mote control system
9. HORN 10 A: Horn
10. HAZARD 10 A: Emergency flashers ,
turn signal lights
11. EFI 15 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, emission control system
12. ALTS 5 A: Charging system
13. HEAD LH LWR 10 A: Lefthand head-
light (low beam)
14. HEAD RH LWR 10 A: Righthand
headlight (low beam)
15. TAIL 15 A: Tail lights, license plate
lights, instrument panel lights , instru-
ment cluster lights
16. OBD 7.5 A: Onboard diagnosis sys-
tem
17. WIPER 25 A: Windshield wipers
18. AM2 15 A: Charging system, multiport
fuel injection system/sequential multi-
port fuel injection system, starting sys-
tem, SRS airbag system 19. STOP 15 A:
Stop lights, high mounted
stoplight, antilock brake system, shift
lock control system, engine control sys-
tem, cruise control system
20. DOOR 25 A: Power door lock system
21. AM1 25 A: “CIG” fuse
22. ECUIG 10 A: Electric cooling fan,
antilock brake system, shift lock con-
trol system, cruise control system
23. RR WIPER 15 A: No circuit
24. A/C 10 A: Air conditioning system
25. INV 15 A: No circuit
26. P/POINT 15 A: Power outlet (in the
rear console box)
27. ECUB 10 A: Daytime running light
system
28. CIG 15 A: Power outlet (on the instru-
ment panel) or cigarette lighter, car au-
dio system, clock, power rear view mir-
ror control, shift lock control system
29. GAUGE 10 A: Gauges and meters, air
conditioning system, daytime running
light system, charging system, auto
antiglare inside rear view mirror, pow-
er windows, cruise control system, rear
window defogger, backup lights, front
passenger ’s seat belt reminder light

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30. WASHER 15 A: Windshield washer
31. MHTR/DEF IUP 10 A: Engine control
system
Fuses (type B)
32. ABS NO.1 30 A: Antilock brake sys-
tem
33. RDI FAN 30 A: Electric cooling fan
34. ABS NO.2 40 A: Antilock brake sys-
tem
35. HEAD MAIN 40 A: “HEAD LH UPR”,
“HEAD RH UPR”, “HEAD LH LWR” and
“HEAD RH LWR” fuses
36. HTR 40 A: Air conditioning system
37. DEF 40 A: Rear window defogger,
“MHTR/DEF IUP” fuse
38. POWER 30 A: Power windows, electric
moon roof
Fuses (type C)
39. ALT 100 A: Charging system, “ABS
NO.1”, “ABS NO.2”, “RDI FAN”, “FOG”,
“HTR”, “AM1”, “POWER”, “DOOR”,
“ECUB”, “TAIL”, “STOP”, “P/POINT”,
“INV” and “OBD” fuses

’03 Corolla U (L/O 0201)
2003 MY COROLLA_U (OM12744U)
You should know as much about the quality and
importance of proper maintenance of your new
vehicle as the people who built it.
The Toyota authorized Repair Manual
tells you how to maintain your vehicle and
enables you to correctly perform your own
maintenance.
The best way to keep your new vehicle in top
running order is to maintain it properly from
the moment you drive it off the showroom
floor.
The Toyota authorized Repair Manual is
packed with literally everything you need to
know to perform your own maintenance in
virtually every area of your new vehicle.

’03 Corolla U (L/O 0201)
2003 MY COROLLA_U (OM12744U)
Where to obtain the Repair Manual
The repair manual for COROLLA, written in
English, may be purchased as applicable from
any Toyota dealer.
Pub. Name: 2003 COROLLA Repair Manual
Pub. No.: RM938U1 (Maintenance, Preparation, Service specifications and Diagnostics)
RM938U2 (Engine, Chassis and
Body)
Maintenance procedures for the engine,
chassis, body, electrical system, and more,
are clearly explained and illustrated.
Periodic maintenance and tuneup
Periodic maintenance and tuneup helps to pre-
vent small problems from growing into larger ones lat-
er on. The repair manual outlines exactly what main-
tenance is required and clearly explains how to do the
work yourself stepbystep.
Areas covered include such things as spark plug re-
placement, valve clearance adjustment and engine oil
and filter replacement.