2003 Hyundai Sonata Owner's Manual

6- 30 DO-IT-YOURSELF MAINTENANCE
G200D02Y-GATInstrument panel junction boxDESCRIPTIONFUSE RATING PROTECTED COMPONENTS
RR HTD IND 10A Rear window defroster, Outside rear view mirror heater
HAZARD 10AHazard light, Turn signal lights
RR FOG 15A Rear fog light
A/CON 10AAir conditioning system
ETACS 10A ETACS, Keyless entry system, Door lock system
DR LOCK 15A Power door lock
P/SEAT 25A Power seat
T/LID OPEN 15A Remote trunk lid
STOP LP 15A Stop lights
H/LP 10A Head light
A/BAG IND 10AAir-bag
T/SIG 10ATurn signal lights
A/CON SW 10A Air conditioning system
ACC SOCKET 15A Power outlet
S/HTR 15ASeat heater
A/BAG 15A Air-bag
B/UP 10A Backup lights
CLUSTER 10A Cluster
START 10AEngine switch
SP1 15A Spare fuse
SP2 15A Spare fuse
P/SEAT (RH) 25A Power Seat
SP4 15A Spare fuse
D/CLOCK 10ADigtal clock
TAIL(LH) 10APosition lights, License plate lights, Tail lights
AUDIO 10A Audio
WIPER 20A Wiper
ROOM LP 10A Dome lights, Front door edge warning lights
TAIL(RH) 10APosition lights, License plate lights, Tail lights
C/LIGHTER 15ACigar lighter
EPS 10A
G200C02Y

7. EMISSION CONTROL SYSTEM
Emission control system .................................................................. 7-2
EGR system .................................................................................... 7-2
Catalytic converter ........................................................................... 7-3
7

7- 2 EMISSION CONTROL SYSTEMS
H010E01Y-AATEGR System (If installed)
This system helps reduce nitrogen oxides by
recirculating a part of the exhaust gas into the
engine, thereby reducing cylinder combustion
temperature, which results in lower output of
oxides of nitrogen.
H010D01A-AAT3. Exhaust Emission Control System
The Exhaust Emission Control System is a
highly effective system which controls exhaust
emissions while maintaining good vehicle
performace.
H010B01A-AAT1. Crankcase Emission Control
System
The positive crankcase ventilation system is
employed to prevent air pollution caused by
blow-by gases being emitted from the crank-
case. This system supplies filtered air to the
crankcase through the air intake hose. Inside
the crankcase, the fresh air mixes with blow-by
gases, which then pass through the PCV valve
and into the induction system.
H010A01L-AATEMISSION CONTROL SYSTEM
Your Hyundai is equipped with an emission
control system to meet all requirements of the
U.S. Environmental Protection Agency or Cali-
fornia Air Resources Board.
There are three emission control systems which
are as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of the
emission control systems, it is recommended
that you have your car inspected and main-
tained by an authorized Hyundai dealer in ac-
cordance with the maintenance schedule in this
manual.
Caution for Inspection and Maintenance
Test (2.7 V6 Vehicle with Traction Control
System)
o To prevent the vehicle from misfiring
during dynamometer testing, discon-
nect the ABS connector located on the
left side of the engine compartment.
o For more information, see shop manual
(BR-67, Wheel Speed Sensor)
H010C02S-AAT
2. Evaporative Emission Control
(Including ORVR: Onboard Refueling
Vapor Recovery) System
The Evaporative Emission Control System is
designed to prevent fuel vapors from escaping
into the atmosphere.
(The ORVR system is designed to allow the
vapors from the fuel tank to be loaded into a
canister while refueling at the gas station, pre-
venting the escape of fuel vapors into the
atmosphere.)
Canister
Fuel vapors generated inside the fuel tank are
absorbed and stored in the onboard canister.
When the engine is running, the fuel vapors
absorbed in the canister are drawn into the
surge tank through the purge control solenoid
valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve is controlled
by the Engine Control Module (ECM); when the
engine coolant temperature is low during idling,
the PCSV closes so that evaporated fuel is not
taken into the engine. After the engine warms-
up during ordinary driving, the PCSV opens to
introduce evaporated fuel to the engine.

EMISSION CONTROL SYSTEMS 7- 3
!WARNING:o Use unleaded fuel only.
o Maintain the engine in good operating
condition. Extremely high catalytic con-
verter temperatures can result from im-
proper operation of the electrical, igni-
tion or multiport electronic fuel injec-
tion.
o If your engine stalls, pings, knocks, or is
hard to start, have your Hyundai dealer
inspect and repair the problem as soon
as possible.
o Avoid driving with a very low fuel level.
Running out of gasoline may cause the
engine to misfire and result in damage to
the catalytic converter.
o Avoid idling the engine for periods
longer than 10 minutes.
o The vehicle should not be pushed or
pulled to get started. This may cause the
catalytic converter to overheat and cre-
ate a fire hazard.
o Do not touch the catalytic converter or
any other part of the exhaust system
while the catalytic converter is hot. Shut
off the engine, wait for at least one hour
before touching the catalytic converter
or any other part of the exhaust system.
o Remember that your Hyundai dealer is
your best source of assistance.
H020A01A-AATCATALYTIC CONVERTER
All Hyundai vehicles are equipped with a mono-
lith type three-way catalytic converter to re-
duce the carbon monoxide, hydrocarbons and
nitrogen oxides contained in the exhaust gas.
Exhaust gases passing through the catalytic
converter cause it to operate at a very high
temperature. The introduction of large amounts
of unburned gasoline into the exhaust may
cause the catalytic converter to overheat and
create a fire hazard. This risk may be reduced
by observing the following:o Do not stop your Hyundai over any com-
bustible material such as grass, paper,
leaves or rags. These materials might
contact the hot catalytic converter and a
fire might result.
Catalytic Converter
HEF-240

8. CONSUMER INFORMATION
Vehicle Identification Number (VIN) ................................................. 8-2
Engine number ................................................................................. 8-2
Recommended inflation pressures ................................................... 8-2
Snow tires ........................................................................................ 8-3
Tire chains ....................................................................................... 8-3
Tire rotation ...................................................................................... 8-3
Tire balancing ................................................................................... 8-4
Tire traction ...................................................................................... 8-4
When to replace tires ....................................................................... 8-4
Spare tire and tools .......................................................................... 8-5
8

8- 2 CONSUMER INFORMATION & REPORTING SAFETY DEFECTS
I030A03Y-AATRECOMMENDED INFLATION PRES-
SURES
I020A01A-AATTIRE INFORMATION
The tires supplied on your new Hyundai are
chosen to provide the best performance for
normal driving.
I010B01A-AATEngine NumberI010A01L-AATVEHICLE IDENTIFICATION
NUMBER (VIN)
The vehicle identification number (VIN) is the
number used in registering your car and in all
legal matters pertaining to its ownership, etc. It
can be found in three different places on your
car:
1. On the bulkhead between the engine and
passenger compartments.
2. On the left top side of the instrument panel
where it can be seen by looking down through
the windshield.
3. On the lower side of the center pillar outer
panel.The engine number is stamped on the engine
block as shown in the drawing.
The tire label located on the driver's door edge
gives the tire pressures recommended for your
vehicle.
TIRE SIZE
TIRE PRESSURE-COLD, kPa (PSI)
P205/65R15, P205/60R16
T125/80R15REAR
210(30)
420(60)FRONT
230(33)
420(60) LOAD UP TO
2 PERSONSMAX.VEHICLE
WEIGHT LIMIT
REAR
230(33)
420(60) FRONT
210(30)
420(60)
HEF-173AI010B01Y
I030A02Y

CONSUMER INFORMATION & REPORTING SAFETY DEFECTS 8- 3
!
!
I050A02Y-AATTIRE CHAINS
Tire chains, if necessary, should be installed on
the front wheels. Be sure that the chains are the
proper size and that they are installed in accor-
dance with the manufacturer's instructions.
To minimize tire and chain wear, do not continue
to use tire chains when they are no longer
needed.
I040A01S-AATSNOW TIRES
If you equip your car with snow tires, they should
be the same size and have the same load
capacity as the original tires. Snow tires should
be installed on all four wheels; otherwise, poor
handling may result.
Snow tires should carry 4 psi (28 kPa) more air
pressure than the pressure recommended for
the standard tires on the tire label on the driver's
door edge , or up to the maximum pressure
shown on the tire sidewall whichever is less.
Do not drive faster than 75 mph (120 km/h)
when your car is equipped with snow tires. These pressures were chosen to provide the
most satisfactory combination of ride comfort,
tire wear and stability under normal conditions.
Tire pressures should be checked at least
monthly. Proper tire inflation pressures should
be maintained for these reasons:
o Lower-than-recommended tire pressures
cause uneven tread wear and poor handling.
o Higher-than-recommended tire pressures
increase the chance of damage from im-
pacts and cause uneven tread wear.
!
WARNING:When driving on roads covered with snow
or ice, drive at less than 20 mph (30 km/h).
I060A02A-AATTIRE ROTATION
Tires should be rotated every 7,500 miles
(12,000 km). If you notice that tires are wearing
unevenly between rotations, have the car
checked by a Hyundai dealer so the cause may
be corrected.
After rotating, adjust the tire pressures and be
sure to check the wheel nut tightness.
CAUTION:Always observe the following:
o Check pressures when the tires are cold.
That is, after the car has been parked for
at least three hours and hasn't been
driven more than one mile or 1.6 km since
starting up.
o Check the pressure of your spare tire
each time you check the pressure of
other tires.
o Never overload your car. Be especially
careful about overloading if you equip
your car with a luggage rack or car top
carrier.
WARNING:o Do not use the temporary spare tire for
tire rotation.
o Do not mix bias ply and radial ply tires
under any circumstances. This may
cause unusual handling characteristics
that could result in death, serious injury,
or property damage.
HEF-241

8- 4 CONSUMER INFORMATION & REPORTING SAFETY DEFECTS
!
!
I080A01A-AAT
TIRE TRACTION
Tire traction can be reduced if you drive on worn
tires, tires that are improperly inflated or on
slippery road surfaces. Tires should be re-
placed when tread wear indicators appear. To
reduce the possibility of losing control, slow
down whenever there is rain, snow or ice on the
road.
I070A01A-AATTIRE BALANCING
A tire that is out of balance may affect handling
and tire wear. The tires on your Hyundai were
balanced before the car was delivered but may
need balancing again during the years you own
the car.
Whenever a tire is dismounted for repair, it
should be rebalanced before being reinstalled
on the car.
I090A01A-AATWHEN TO REPLACE TIRES
WARNING:
Driving on worn-out tires is dangerous!
Worn-out tires can cause loss of braking
effectiveness, steering control and trac-
tion. When replacing tires, never mix radial
and bias ply tires on the same car. If you
replace radial tires with bias-ply tires, they
must be installed in sets of four.The original tires on your car have tread wear
indicators. The tread wear indicators appear
when the tread depth is 0.06 in. (1.6 mm). The
tire should be replaced when these appear as
a solid bar across two or more grooves of the
tread. Always replace your tires with those of
the recommended size. If you change wheels,
the new wheel's rim width and offset must meet
Hyundai specification.
WARNING:o Using tires and wheels of other than the
recommended sizes could cause un-
usual handling characteristics that could
cause death, serious injury, or property
damage.
o Wheels that do not meet Hyundai's di-
mensional specifications may fit poorly
and result in damage to the vehicle,
including broken wheel studs.
HGK248
0.06 in. (1.6 mm)
Wear indicator