ECU CHEVROLET AVEO 2002 Service Manual Online

Immobilizer
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Immobilizer Operation
Your vehicle may have a passive theft-deterrent system.
The immobilizer system prevents your vehicle from
being started by unauthorized persons.
If your vehicle has an immobilizer system, your vehicle
has a special key that works with the theft-deterrent
system. There is a transponder in the key head that is
electronically coded. The correct key will start the
vehicle. An invalid key immobilizes the engine. The
immobilizer system isolates the power supply to
the ignition system, the fuel pump and the fuel injectors.
The engine immobilizer is activated after the key is
turned to LOCK and removed from the ignition.
The security light located on the top center of the
instrument panel in the secondary information center will
flash when the immobilizer is active. If the light does
not flash after removing the key, have the system
checked by your dealer.
The immobilizer system works when you turn the key to
START. If the immobilizer system does not recognize the
electronic code, the engine will not start and the security
indicator will continue blinking. If your key is ever
damaged, you may not be able to start your vehicle.
2-16

When trying to start the vehicle, if the engine does not
start and the security light continues flashing, the key
may have a damaged transponder. Turn the ignition off
and try again.
If the engine still does not start, and the key appears to be
undamaged, try another key. At this time, you may also
want to check the fuse. SeeFuses and Circuit Breakers
on page 5-75. If the engine still does not start with the
other key, your vehicle needs service. If your vehicle
does start, the first key may be faulty. See your dealer
who can have a new key made.
Up to five keys may be programmed for the vehicle.
If you lose or damage your keys, only a GM dealer can
have new keys made.
If you are ever driving and the security light comes on
and stays on, you will be able to restart your engine
if you turn it off. The theft-deterrent system, however,
is not working properly and must be serviced by
your dealer. Your vehicle is not protected by the
theft-deterrent system at this time.
In an emergency, contact Roadside Assistance. See
Roadside Assistance Program on page 7-6.Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
Do not drive at any one constant speed, fast or
slow, for the rst 500 miles (805 km). Do not
make full-throttle starts. Avoid downshifting to
brake, or slow, the vehicle.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new
brake linings are not yet broken in. Hard stops
with new linings can mean premature wear
and earlier replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. SeeTowing
a Trailer on page 4-35for the trailer towing
capabilities of your vehicle and more
information.
Following break-in, engine speed and load can be
gradually increased.
2-17

The main components of your instrument panel are the following:
A. Air Outlet. SeeOutlet Adjustment on page 3-21.
B. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-24.
C. Digital Clock and Secondary Information Center.
SeeClock on page 3-32andSecondary Information
Center (SIC) on page 3-31.
D. Hazard Warning Flashers Button. SeeHazard
Warning Flashers on page 3-6.
E. Instrument Panel Brightness Control. SeeInstrument
Panel Brightness on page 3-15.
F. Hood Release. SeeHood Release on page 5-10.G. Horn. SeeHorn on page 3-6.
H. Audio System. SeeAudio System(s) on page 3-38.
I. Cupholder. SeeCupholder(s) on page 2-34.
J. Ashtray. SeeAshtray(s) and Cigarette Lighter on
page 3-17.
K. Cigarette Lighter. SeeAshtray(s) and Cigarette
Lighter on page 3-17.
L. Climate Control System. SeeClimate Control
System on page 3-18.
M. Glove Box. SeeGlove Box on page 2-34.
3-5

Winter Driving
Here are some tips for winter driving:
•Have your vehicle in good shape for winter.
•You may want to put winter emergency supplies in
your trunk.
Also seeTires on page 5-45.Include an ice scraper, a small brush or broom, a
supply of windshield washer fluid, a rag, some winter
outer clothing, a small shovel, a flashlight, a red
cloth, and a couple of reflective warning triangles. And,
if you will be driving under severe conditions, include
a small bag of sand, a piece of old carpet, or a couple of
burlap bags to help provide traction. Be sure you
properly secure these items in your vehicle.
4-22

A vehicle specific Certification label is attached to the
center pillar (B-pillar), below the driver’s door latch. This
label tells you the gross weight capacity of your vehicle,
called the Gross Vehicle Weight Rating (GVWR). The
GVWR includes the weight of the vehicle, all occupants,
fuel and cargo. Never exceed the GVWR for your vehicle,
or the Gross Axle Weight Rating (GAWR) for either the
front or rear axle.
And, if you do have a heavy load, you should spread it
out. See “Steps for Determining Correct Load Limit”
earlier in this section.
{CAUTION:
Do not load your vehicle any heavier than the
Gross Vehicle Weight Rating (GVWR), or either
the maximum front or rear Gross Axle Weight
Rating (GAWR). If you do, parts on your
vehicle can break, and it can change the way
your vehicle handles. These could cause you
to lose control and crash. Also, overloading
can shorten the life of your vehicle.
Notice:Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.If you put things inside your vehicle — like suitcases,
tools, packages, or anything else — they will go as fast
as the vehicle goes. If you have to stop or turn
quickly, or if there is a crash, they will keep going.
{CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
Put things in the cargo area of your
vehicle. Try to spread the weight evenly.
Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.
Do not leave an unsecured child restraint
in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Do not leave a seat folded down unless
you need to.
4-33

Adding Coolant
If the level falls below the Minimum (B) mark, add the
proper coolant mixture at the surge tank, but only when
the engine is cool. If the surge tank is empty, a
special fill procedure is necessary. SeeCooling System
on page 5-26for instructions on “How to Add Coolant
to the Coolant Surge Tank.”
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
When replacing the pressure cap, make sure it is
hand-tight and fully seated.
Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Engine Overheating
You will find a coolant temperature gage on your
vehicle’s instrument panel cluster. SeeEngine Coolant
Temperature Gage on page 3-28.
If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can burn
you badly, even if you just open the hood. Stay
away from the engine if you see or hear steam
coming from it. Just turn it off and get
everyone away from the vehicle until it cools
down. Wait until there is no sign of steam or
coolant before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch re. You
or others could be badly burned. Stop your
engine if it overheats, and get out of the
vehicle until the engine is cool.
5-24

5. Install the appropriate bulb into the socket.
6. Replace the bulb socket into the lamp housing.
Twist the bulb socket clockwise to secure.
7. Reverse Step 2 to reinstall the lamp housing.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up 94535571
Center High-Mounted Stoplamp
(CHMSL)94535587
Headlamps 94535548
Front Parking/Turn Signal 94535574
Side Turn Signal 94535587
Stoplamp/Taillamps 94535574
Turn Signal Lamps 94535572
For replacement bulbs not listed here, contact your
dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear or
cracking. See “Wiper Blade Check” underPart B: Owner
Checks and Services on page 6-18for more information.Replacement blades come in different types and are
removed in different ways.
Here is how to remove the Shepherd’s Hook type:
1. Pull the windshield wiper arm away from the
windshield.
2. Press the retaining clip (A) and pull the wiper blade
off the arm.
3. Install a new blade by reversing Steps 1 and 2.
5-44

Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts, or
wheel nuts, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, and wheel nuts for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts, or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts, and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-58for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has been
used or how far it has been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class “S” type chains
that are the proper size for your tires. Install them
on the front tires and tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
5-57

15. Tighten the wheel nuts
firmly in a crisscross
sequence, as shown.
Notice:Wheel covers will not t on your compact
spare. If you try to put a wheel cover on the compact
spare, you could damage the cover or the spare.
Do not try to put a wheel cover on your compact spare
tire. It will not fit. Store the wheel cover in the cargo
area until you have the flat tire repaired or replaced.Storing a Flat or Spare Tire and
Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
To store a flat or compact spare tire and tools, do the
following:
1. Store the flat tire or the compact spare in the
compact spare tire compartment.
2. Secure the retainer.
3. Store the tools securely in the foam tray and place
the tray back in the cargo area.
4. Replace the trim cover.
The compact spare tire is for temporary use only.
Replace the compact spare tire with a full-size tire as
soon as you can. SeeCompact Spare Tire on
page 5-66.
5-65

Instrument Panel Fuse Block
The instrument panel fuse block is located on the end of
the instrument panel on the driver’s side of the vehicle.
To access the fuses, open the fuse panel door by
pulling the door out.
To reinstall the door, first insert the rear edge of the
fuse panel door, then push the front of the door into the
end of the instrument panel to secure it.
5-76