2003 HONDA ACCORD Intake

CONT INUED
The f low-through ventilation system
draws in outside air, circulates it
through the interior, then exhausts it
through vents near the rear window.Turn the temperature control dial
all the way to the lef t.
Make sure the A/C is of f .
Select and Fresh Air mode.
Set the f an to the desired speed.
The outside air intakes f or the
heating and cooling system are at
the base of the windshield. Keep
these clear of leaves and other
debris.
This section covers how to set up the
system controls f or ventilation,
heating, cooling, dehumidif ying, and
def rosting.
The engine must be running f or the
heater and air conditioning to
generate hot and cold air. The heater
uses engine coolant to warm the air.
If the engine is cold, it will be several
minutes bef ore you f eel warm air
coming from the system.
It is best to leave the system in Fresh
Air mode under almost all conditions.
Keeping the system in Recirculation
mode, particularly with the A/C of f ,
can cause the windows to fog up.
Switch to Recirculation mode when
you are driving through smoky or
dusty conditions, then switch back to
Fresh Air mode when the condition
clears.
The air conditioning does not rely on
engine temperature.
1. 2. 3.
Heating and Cooling
Comf ort and Convenience Feat ures
Vent ilat ion
How to Use the System
115
RECIRCULATION BUTTONTEMPERATURE
CONTROL DIAL
FAN CONTROL
DIAL
MODE BUTTONS
AIR CONDITIONING
(A/C) BUTTON
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Open the hood. If you need to
change a bulb on the passenger’s
side, undo the two f asteners and
remove the air intake cover.Remove the electrical connector
f rom the bulb by squeezing the
connector to unlock the tab, then
slide the connector of f the bulb.Remove the bulb by turning it
approximately one-quarter turn
counterclockwise.
Insert the new bulb into the hole
and turn it one-quarter turn clock-
wise to lock it in place.
1.
3.
2.
4.
CONT INUED
High Beam Headlight
Lights
Maint enance313
FASTENERS
4-cylinder models 6-cylinder models TAB
BULB
AIR INTAKE
COVER AIR INTAKE
COVER
FASTENERS
4-cylinder models
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Push the electrical connector back
onto the bulb. Make sure it is on
all the way.
Turn on the headlights to test the
new bulb.
Reinstall the air intake cover.
Reinstall the two fasteners and
secure them by pushing on the
heads until they lock.Use a f lat-tipped screwdriver to
remove the two holding clips f rom
the inner f ender.Pull the inner f ender cover away
f rom the f ender and bumper.
(Passenger’s side) Remove the electrical connector
fromthebulbbysqueezingthe
connector to unlock the tab, then
slide the connector of f the bulb.
Remove the bulb by turning it
approximately one-quarter turn
counterclockwise.
If you are changing the bulb on
the passenger’s side, start the
engine, turn the steering wheel all
the way to the left, and turn off the
engine. If you are changing the
bulb on the driver’s side, turn the
steering wheel to the right.
6. 7.
5.
3.4. 5.
1. 2.
L ow Beam Headlight
Lights
Maint enance314
HOLDING CLIPS
TAB BULB
6-cylinder models
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Î
ÎThe burning of gasoline in your car’s
engine produces several byproducts.
Some of these are carbon monoxide
(CO), oxides of nitrogen (NOx) and
hydrocarbons (HC). Gasoline
evaporating from the tank also
produces hydrocarbons. Controlling
the production of NOx, CO, and HC
is important to the environment.
Under certain conditions of sunlight
and climate, NOx and HC react to
f orm photochemical ‘‘smog.’’ Carbon
monoxide does not contribute to
smog creation, but it is a poisonous
gas. The United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page
.
In Canada, Honda vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
Your car has a Positive Crankcase
Ventilation System. This keeps
gasses that build up in the engine’s
crankcase from going into the
atmosphere. The Positive Crankcase Ventilation valve routes them from
the crankcase back to the intake
manif old. They are then drawn into
the engine and burned.
The Onboard Ref ueling Vapor
Recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f .
As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
250
The Clean Air Act
Crankcase Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Evaporative Emissions Control
System
T echnical Inf ormation
Emissions Cont rols
371
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The emissions control systems are
covered by warranties separate f rom
the rest of your car. Read your
warranty manual f or more inf orma-
tion.
The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
genuine Honda replacement parts or
their equivalent f or repairs. Using
lowerqualitypartsmayincreasethe
emissions f rom your car.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Engine Control Module (ECM)
or the Powertrain Control Module
(PCM) uses various sensors to
determine how much air is going
into the engine. It then controls how
much f uel to inject under all operat- ing conditions.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced.
The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and Three Way
Catalytic Converter. These four
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
comes out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems. The Exhaust Gas Recirculation
(EGR) system takes some of the
exhaust gas and routes it back into
the intake manif old. Adding exhaust
gas to the air/f uel mixture reduces
the amount of NOx produced when
the f uel is burned.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), dinitrogen
(N ), and water vapor.
2
2
Replacement Parts
Exhaust Emissions Controls
Emissions Cont rols
T echnical Inf ormation
PGM-FI Syst em Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
372
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