2003 Hyundai Grandeur engine

6- 18 DO-IT-YOURSELF MAINTENANCE
G145A02L-GAT
CHANGING THE AIR FILTER (For Evaporator and Blower Unit)
The air filter is located in front of the
evaporator unit behind the glove box. It helps to decrease pollutants from
entering the car and to filter the air.
G145A01L
1. Open the glove box. Lower it down by pushing the both sides of the glove box inward.
3. Lower the glove box down com-pletely. G145A02L
2. Lower the glove box down after
taking out the damper strap fromthe hole.
B760A08L
G140D01S-GAT Checking the Compressor Drive Belt When the air conditioning is being used regularly, the compressor drive belt tension should be checked at least once a month. To check the drive belt tension, press down on the belt halfway between the engine crankshaft and compressorpulleys. Pressing with your finger, you should not be able to deflect this belt anymore than 8.0 mm. If you have
the instruments to check it with a force of 98N (22 lb.), the deflection should be approx. 8.0 mm (0.315inches). If the belt is too loose, have it adjusted by your Hyundai dealer. G140D01L
2.5L 3.0L/3.5L
Power steering pump
Crank shaft pulley A/C pulley
Crank shaft pulley
A/C pulley
Power steering pulley
Generator

6- 20 DO-IT-YOURSELF MAINTENANCE
G180A01A-GAT
CHECKING BRAKE PEDAL CLEARANCE
G180A01L
75 mm (2.95 in.)
You need a helper to check the brake pedal clearance. With the engine run- ning, have your helper press down onthe brake pedal several times and then hold it down with a force of about 490 N (50 Kg, 110 lbs). The brakepedal clearance is the distance from the top surface of the brake pedal to the asphalt sheeting under the floormat.If the brake pedal clearance is notwithin the limits specified in the illus-tration, have it inspected by your Hyundai dealer and adjusted or re- paired if necessary.G170A01A-GAT
CHECKING BRAKE PEDAL FREEPLAY
HXGS508
3 ~ 8 mm (0.12 ~ 0.31 in.)
With the engine off, press down onthe brake pedal several times to re- duce the vacuum in the brake booster. Then, using your hand, press down slowly on the brake pedal until you feel a change in resistance. This isthe brake pedal freeplay.The freeplay should be within thelimits specified in the illustration. If it is not, have it inspected by your Hyundai dealer and adjusted or re-paired if necessary.G160A01A-GAT CHECKING CLUTCH PEDAL FREEPLAY
G160A01E
6 ~ 13 mm (0.24 ~ 0.51 in.)
With the engine off, press lightly onthe clutch pedal until you feel a change in resistance. This is the clutch pedalfreeplay. The freeplay should be within the limits specified in the illustration. If it is not, have it inspected by yourHyundai dealer and adjusted or re- paired if necessary.

DO-IT-YOURSELF MAINTENANCE 6- 21
G190A01A-GAT
CHECKING DRIVE BELTS
Drive belts should be checked peri- odically for proper tension and ad- justed if necessary. At the same time, belts should be examined for cracks,wear, fraying or other evidence of deterioration and replaced if neces- sary. Belt routing should also be checked to be sure there is no interference between the belts and other parts ofthe engine. After a belt is replaced, the new belt should be adjusted again after two or three weeks to eliminateslack resulting from initial stretching after use. G140D01L
2.5L
3.0L/3.5L
Power steering pump
Crank shaft pulley A/C pulley
Crank shaft pulley
A/C pulley
Power steering pulley
Generator
G200A01Y-GAT
CHECKING AND REPLACING FUSES Replacing a Fusible Link
A fusible link will melt if the electrical circuits from the battery are ever over- loaded, thus preventing damage tothe entire wiring harness. (This could be caused by a short in the system drawing too much current.) If thisever happens, have a Hyundai dealer determine the cause, repair the sys- tem and replace the fusible link. Thefusible links are located in a under hood junction box for easy inspec- tion. G200A01L
Melted
Good
G200B01Y-GAT Replacing Accessory Fuse
G200B01L
The instrument panel junction box for
the lights and other electrical acces- sories will be found low on the dash- board on the driver's side. Inside in- CAUTION:
When replacing a fusible link, never use anything but a new fusiblelink with the same or lower amper- age rating. Never use a piece of wire or a higher-rated fusible link.This could result in serious dam- age and create a fire hazard.
!

DO-IT-YOURSELF MAINTENANCE 6- 23
G210A01A-AAT
CHECKING THE BATTERY
WARNING:
Batteries can be dangerous! When working with batteries, care-
fully observe the following pre- cautions to avoid serious injuries.
The fluid in the battery contains a
strong solution of sulfuric acid, whichis poisonous and highly corrosive. Be careful not to spill it on yourself or thecar. If you do spill battery fluid on yourself, immediately do the follow- ing:
o If battery fluid is on your skin, flush the affected areas with water for at least 15 minutes and then seek medical assistance.
o If battery fluid is in your eyes, rinse out your eyes with water and getmedical assistance as soon as possible. While you are being driven to get medical assistance, continueto rinse your eyes by using a sponge or soft cloth saturated with water. o If you swallow battery fluid, drink a
large quantity of water or milk fol-lowed by milk of magnesia, eat araw egg or drink vegetable oil. Get medical assistance as soon as pos- sible.
While batteries are being charged(either by a battery charger or by the vehicle's generator), they produce explosive gases. Always observethese warnings to prevent injuries from occurring:
o Charge batteries only in a well ven- tilated area.
o Do not permit flames, sparks or smoking in the area.
o Keep children away from the area. G210B01A-AAT Checking the Battery Keep the battery clean. Any evidence of corrosion around the battery posts or terminals should be removed using a solution of household baking sodaand warm water. After the battery terminals are dry, cover them with a light coating of grease.
!
G220A01A-AAT
CHECKING ELECTRIC COOL- ING FANS
WARNING:
The cooling fan is controlled by
engine coolant temperature and may sometimes operate even whenthe engine is not running. Use extreme caution when working near the blades of the cooling fan,so that you are not injured by a rotating fan blade. As the coolant temperature decreases the fan willautomatically shut off. This is a normal condition.
G220B01A-AAT
Checking Engine Cooling Fan
The engine cooling fan should come
on automatically if the engine coolanttemperature is high.
G220C01A-AAT
Checking Condenser Cooling Fan
The condenser cooling fan should
come on automatically whenever the air conditioning is in operation.
!

6- 24 DO-IT-YOURSELF MAINTENANCE
G240A01A-AAT
POWER STEERING HOSES
It is suggested that you check the power steering hose connections forfluid leakage at regular intervals.The power steering hoses should bereplaced if there is severe surface cracking, scuffing or worn spots. De- terioration of the hose could causepremature failure.
G230A03A-GAT POWER STEERING FLUID LEVEL
HXG2006
The power steering fluid level should be checked regularly. To check the power steering fluid level, be sure the ignition is "OFF", then check to make certain that the power steering fluid level is betweenthe "MAX" and "MIN" level markings on the fluid reservoir. NOTE: Grinding noise from the power steering pump may be heard im-mediately after the engine is started in extremely cold conditions (be- low - 20°C). In this case, if the noise stops during warm up, there is no abnormal function in the sys- tem. This is due to a power steer-ing fluid characteristic in extremely cold conditions.
Recommended Fluid Use PSF-3 type fluid. NOTE: Do not start the engine when the
power steering oil reservoir is empty.
G290A02L-GAT
HEADLIGHT AIMING ADJUST- MENT
HID Type (If installed)
WARNING:
If you need headlight aiming ad- justment, have your vehicle in- spected by your Hyundai Dealer. Don't attempt to replace or inspect the HID headlight bulb to prevent danger of an electric shock.
Vertical Aiming HorizontalAiming
!
G290A02L
General Type

DO-IT-YOURSELF MAINTENANCE 6- 25
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 several times. Place the vehicle at a distance of 3 m (118 in.) 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). Have the driver or equivalent weight placed in driver's seat.
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) and the horizontal line (through the center of each headlight) on the aimingscreen. And then, draw a parallel line at 30 mm (1.18 in.) under the horizontal line.
G290B02L-GAT
Adjustment After Headlight As- sembly Replacement
G290B01L
LW
H
H Cut-off line
Ground line
If the vehicle has had front body
repair and the headlight assembly has been replaced, the headlight aim- ing should be checked using an aim-ing screen as shown in the illustra- tion. Turn on the headlight switch. (Low Beam Position)
"P"
Horizontal line
30mm (1.18 in.) Vertical line
7. Adjust each cut-off line of the low
beam to the parallel line with a phillips screwdriver - VERTICALAIMING.
8. Adjust each cut-off line of the low
beam to each vertical line with a phillips screwdriver - HORIZON- TAL AIMING. 1. Adjust headlights so that main axis
of light is parallel to center line ofthe body and is aligned with point"P" shown in the illustration.
2. Dotted lines in the illustration show the center of headlights.
SPECIFICATIONS: "H"Horizontal center line of headlightsfrom groundGeneral type: 634 mm (24.96 in.) HID type: 628 mm (24.72 in.) "W" Distance between each headlightcenter: 1,240 mm (48.8 in.) "L" Distance between the headlightsand the wall that the lights aretested against : 3,000 mm (118.11 in.)

6- 26 DO-IT-YOURSELF MAINTENANCE
G260A01L-GAT
REPLACEMENT OF LIGHT BULBS
Before attempting to replace a light bulb, be sure the switch is turned tothe "OFF" position.The next paragraph shows how toreach the light bulbs so they may be changed. Be sure to replace the burned-out bulb with one of the samenumber and wattage rating.See page 6-33 for the wattage de-scriptions.
! CAUTION:
o Keep the lights out of contact with petroleum products, such as oil, gasoline, etc.
o Be sure to replace the LED type equipped bulbs with an assem-bly.Replacement instructions:
1. Allow the bulb to cool. Wear eye protection.
2. Open the engine hood.
3. Always grasp the bulb by its plastic base, avoid touching the glass. G270A03L
G270A02L-GAT
HEADLIGHT AND FRONT TURN SIGNAL LIGHT
High beam Low beam
Turn signal light
G270D01L
4. Using a spanner of the correct size, remove the headlight assem- bly mounting bolts.
G270D02L
5. Disconnect the power cord from the back of the headlight.

6- 34 DO-IT-YOURSELF MAINTENANCE
G200C01L-GAT JUNCTION BOX DESCRIPTION Under Hood Junction Box
G200C01L
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
FUEL PUMP
HEAD LIGHT(Lo-LH) ABS
INJECTOR
A/C COMPRESSOR A/T
MAIN
IGNITION COIL
OXYGEN SENSOR EGR
HORN
HEAD LIGHT(HI)
HEAD LIGHT(Lo-RH) DRL
FOG LIGHT DIODE 1
SPARE
SPARE
SPARE
SPARE
DIODE 2
BLOWER
POWER FUSE 2 POWER AMPSUNROOF
TAIL LIGHT
POWER FUSE 1 ECU
REAR DEFOGGER CONDENSER
POWER WINDOW IGNITION1/2ABS 1/2
RADIATOR FUSE
RATING
20A15A10A10A10A20A30A 20A 15A 15A10A15A20A15A15A 30A 20A15A10A 30A 30A20A15A20A30A10A30A20A40A
30A/30A30A/30A 30A PROTECTED COMPONENTS
Fuel pump relay
Head light relay (Low-LH)
ABS controls, Cruise control module, ETS control module
Limp home valve, ETS controls, Injector
A/C relay
A/T control relay, TCM, Engine control relayMFI controls
Ignition coil, A/T pulse generator, ECM, Ignition failure
sensor, E/TCM
ETS relay, MFI controls
A/C relay, MFI controls, EGR solenoid
Horn relay
Head light relay (High)
HID head light relay
DRL control module, Siren
Fog light relay - -----
Blower relayFuse 4, 20, 24, 25
Audio amp module
Data link connector, Sunroof relay, Home link connector
Tail light relayFuse 1, 7, 17, 18, 19
ETS control module, ECM, E/TCM, Generator
Rear window defogger relay
A/C fan relay #1
Power window relay, IMS controls
Ignition switchABS controlsRadiator fan relay