Hyundai Sonata 2004 Owner's Manual

DO-IT-YOURSELF MAINTENANCE 6- 23
HEF-227
6. Replace to the new bulb.
HEF-231
Low Beam
High BeamG270B01Y-AATFront turn signal Light
1. Take off the headlight module to remove
three bolts with a spanner.
HEF-221
HEF-222HEF-223
2. Disconnect the power code.3. Replace to the new bulb.

6- 24 DO-IT-YOURSELF MAINTENANCE
G270D01Y-AATRear Combination Light
1. Remove the cover with a (+) driver.
2. Replace to the new bulb.
HEF-242
HEF-220
(1)
(2)
(3)(1) Trun signal light
(2) Stop/Tail light
(3) Back-up light
G270E01Y-GATLuggage Compartment Light
1. Open the trunk lid.
2. Remove the cover with a (-) driver.
HEF-239G270E02L
HTB284
Screwdriver
3. Disconnect the power cord.
4. Replace to the new bulb.

DO-IT-YOURSELF MAINTENANCE 6- 25
G270E01TB-GATSide Repeater
1. Push the cover toward the front of vehicle
and remove it.
2. Disconnect the power code.
G270E01A
HTB277G270G01TB-GAT
Interior Light (If installed)
1. Reomove the cover with a (-) driver.
HEF-232
HEF-233
2. Replace to the new bulb.
HTB278
3. Replace to the new Bulb.

6- 26 DO-IT-YOURSELF MAINTENANCE
!
G290A05Y-AATHEADLIGHT AIMING ADJUSTMENT
Before performing aiming adjustment, make
sure of the following.
1. Keep all tires inflated to the correct pressure.
2. Place the vehicle on level ground and press
the front bumper & rear bumper down sev-
eral times. Place vehicle at a distance of 118
in. (3m) from the test wall.
3. See that the vehicle is unloaded (except for
full levels of coolant, engine oil and fuel, and
spare tire, jack, and tools).
4. Clean the head light lenses and turn on the
headlights (Low beam).
5. Open the hood.
6. Draw the vertical line (through the center of
each headlight beam pattern) and the hori-
zontal line (through the center of each head-
light beam pattern) on the aiming screen.And then, draw the parallel line at 0.827 in. (21
mm) under the horizontal line.
7. Adjust each cut-off line of the low beam to the
parallel line with a phillips screwdriver -
VERTICAL AIMING
WARNING:Horizontal aiming should be adjusted by an
authorized Hyundai Dealer.
G290A03Y
G270H01Y-GATLicense plate Light
1. Reomove the cover with a (+) driver.
2. Replace to the new bulb.
HEF-235
HEF-236
Vertical
aiming

DO-IT-YOURSELF MAINTENANCE 6- 27
SPECIFICATION:
"H"
Horizontal center line of headlights from ground
:
Low Beam: 25.55 in. (649mm)
High Beam: 25.31 in. (643mm)
"W"
Distance between each headlight center :
Low Beam: 51.97 in. (1,320mm)
High Beam: 39.05 in. (992mm)
"L"
Distance between the headlights and the wall
that the lights are tested against : 118 in. (3,000
mm)G290B02Y-AATAdjustment After Headlight Assembly
Replacement
If the vehicle has had front body repair and the
headlight assembly has been replaced, the
headlight aiming should be checked using the
aiming screen as shown in the illustration. Turn
on the headlight switch.
1. Adjust headlights so that main axis of light is
parallel to center line of the body and is
aligned with point "P" shown in the illustration.
2. Dotted lines in the illustration show the center
of headlights.
G290B02Y-1
LW
H
HCut-off line
Ground
line
"P"
Horizontal line
0.827 in. (21 mm)Vertical line

6- 28 DO-IT-YOURSELF MAINTENANCE
Part Name
Head Light (High/Low)
Map Light
Interior Light
Front Fog Light (If installed)
Turn signal Light/Front position Light
Side Mark Light
Front Door Edge LightWith Sunroof
Without Sunroof
G280A04Y-AAT
No.
1
2
3
4
5
6
7Wattage
55(H1)/55(H7)
5
5
10
55
28/8
5
5No.
8
9
10
11Wattage
3.2 (LED type)
5
27/8
27
27
5 Part Name
High Mounted Rear stop Light
Luggage Compartment Light
Rear Combination Light
Stop / Tail Light
Turn signal Light
Back up Light
License plate Light
1
G280A04Y
12389
45671011
(High)(Low)

DO-IT-YOURSELF MAINTENANCE 6- 29
G200C03Y-GATJUNCTION BOX DESCRIPTION
Under hood junction box
Note:
Not all junction box description in this manual may be applicable to
your vehicle. It is accurate at the time of printing. When you inspect the
junction box on your vehicle, refer to the junction box label
DESCRIPTION
COND FAN
PWR WIND
ABS 2
IGN SW-1
ABS 1
IGN SW-2
RAD FAN MTR
FUEL PUMP
HD LP LO
ABS
INJECTOR
A/C COMPR
ATM RLY
ECU RLY
IG COIL
O2 SNSR
ECU
HORN
HEAD LP HI
HEAD LP WASH
DRL
FR FOG
HEAD LP LO RH
DIODE-1
SPARE
SPARE
SPARE
SPARE
DIODE-2
BLOWER
PWR FUSE-2
PWR AMP
SUNROOF
TAIL LP
PWR FUSE-1
ECU
RR HTDFUSE RATING
20A
40A
20A
30A
40A
30A
30A
20A
15A
10A
10A
10A
20A
30A
20A
15A
15A
10A
15A
20A
15A
15A
15A
-
30A
20A
15A
10A
-
30A
30A
20A
15A
20A
30A
10A
30APROTECTED COMPONENTS
Condenser fan
Power window
ABS
Ignition switch
ABS
Ignition switch
Radiator fan motor
Fuel pump
Headlights (LO)
ABS
Injector
Air-con compressor
ATM Relay
Engine control unit relay
Ignition coil
Oxygen sensor
Engine control unit
Horn
Headlights (HI)
-
DRL
Front fog lights
Headlight (Low)
Diode 1
Spare fuse
Spare fuse
Spare fuse
Spare fuse
Diode 2
Blower
Power fuse 2
Power amp
Sunroof
Tail lights
Power fuse 1
ECU
Rear window defroster
HEF-165C

6- 30 DO-IT-YOURSELF MAINTENANCE
G200D02Y-GATInstrument panel junction boxDESCRIPTIONFUSE RATINGPROTECTED 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 10AETACS, 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 10AHead light
A/BAG IND 10A Air-bag
T/SIG 10A Turn signal lights
A/CON SW 10A Air conditioning system
ACC SOCKET 15A Power outlet
S/HTR 15A Seat 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 10AAudio
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.