2003 HONDA CIVIC HATCHBACK air condition

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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 Motor Vehicle
Saf ety Standards (CMVSS) f or
Emissions valid at the time they are
manuf actured.
The 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.
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 fromthe crankcase back to the intake
manif old. They are then drawn into
the engine and burned.
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.
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 .
158
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
T echnical Inf ormation
256

The exhaust emissions controls
include three systems: PGM-FI,
Ignition Timing Control and Three
Way Catalytic Converter. These
three 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 from the crankcase and
evaporative emissions control
systems.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 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)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
f uel to inject under all operating
conditions.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced.
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. 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
lower quality parts may increase the
emissions f rom your car.
2
2
Exhaust Emissions Controls
Replacement Parts
PGM-FI Syst em
Ignit ion T iming Cont rol Syst emThree Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation 257

CONT INUED
BatteryCharging System ...........................
Indicator . 58, 235
............................
Jump Starting . 230
..............................
Maintenance . 184
............................
Specif ications . 251
..............................
Bef ore Driving . 127
....................................
Belts,Seat .8,43
...........................
Beverage Holders . 90
.................................
Body Repairs . 220
Brakes
.............
Break-in, New Linings . 128
...........................................
Fluid . 177
.....................
Light, Burned-out . 207
.........................................
Parking . 89
.................
System Indicator . 59, 238
........................
Wear Indicators . 147
.............................
Braking System . 147
........................
Break-in, New Car . 128
..
Brightness Control, Instruments . 67
........................
Brights, Headlights . 66
...
Accessories and Modif ications . 135
................................
Accessories . 135
.
Additional Safety Precautions . 136
............................
Modif ications . 136
ACCESSORY (Ignition Key .......................................
Position) . 73
...............
Accessory Power Socket . 92
Adding
................................
Brake Fluid . 178
...............................
Clutch Fluid . 178
..........................
Engine Coolant . 171
..................................
Engine Oil . 167
....
Manual Transmission Fluid . 177
........
Windshield Washer Fluid . 176
Additional Inf ormation About .......................
Your Seat Belts . 43
......................
Lap/Shoulder Belt . 43
...............
Seat Belt Maintenance . 45
..
Seat Belt System Components . 43
Additional Inf ormation About ...........................
Your Airbags . 46
...
Additional Safety Precautions . 51
How the Passenger Airbag
..........
Cutoff Indicator Works . 49 How Your Front Airbags
.........................................
Work . 46
....................
Airbag Components . 46
....................
Additives, Engine Oil . 168
Adjustments
..........................
Head Restraints . 82
.........................................
Mirrors . 88
.............................................
Seats . 81
...........................
Steering Wheel . 71
...............................
Airbag (SRS) . 9, 46
.....................
Air Cleaner Element . 179
................
Air Conditioning System . 96
..............................
Maintenance . 189
............................................
Usage . 96
.........................
Air Outlets (Vents) . 98
.......................
Air Pressure, Tires . 193
..................
High Speed Driving . 194
.........................
Normal Driving . 194
.......................
Alcohol in Gasoline . 254
......................................
Antif reeze . 171
Anti-thef t Steering Column
..............................................
Lock . 73
..........................
Appearance Care . 213
................................
Audio System . 104
Index
A B
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Bulb Replacement..........................
Back-up Lights . 206
..................................
Stop Light . 206
......................
Cargo Area Light . 211
................
Front Parking Lights . 205
........
Front Side Marker Lights . 204
.................................
Headlights . 202
.........
High-mount Brake Light . 207
...........................
Interior Lights . 210
.................
License Plate Lights . 209
..................
Side Marker Lights . 204
...........
Side Turn Signal Lights . 208
............................
Specif ications . 251
....................
Turn Signal Lights . 203
..............................
Bulbs, Halogen . 202
.........
Cables, Jump Starting With . 230
............................
Capacities Chart . 250
.............
Carbon Monoxide Hazard . 52
...........................
Cargo Area Cover . 84
.............................
Carrying Cargo . 137
Cassette Player
............................................
Care . 122
...................................
Operation . 119 ..............
CAUTION, Explanation of . ii
...................................
CD Changer . 115
.......................................
CD Player . 113
........................
Certif ication Label . 248
............................................
Chains . 199
Change Oil
........................................
How to . 169
......................................
When to . 158
....................
Changing a Flat Tire . 223
............
Changing Engine Coolant . 173
...
Charging System Indicator . 58, 235
Checking
.....................
Battery Condition . 184
................................
Brake Fluid . 178
...............................
Clutch Fluid . 178
.................................
Drive Belts . 192
..........................
Engine Coolant . 133
..................................
Engine Oil . 132
..........................................
Fuses . 241
....
Manual Transmission Fluid . 177
............
Checklist, Bef ore Driving . 142
.....................................
Child Saf ety . 20
....................
Cleaner Element, Air . 179
Cleaning
....................
Aluminum Wheels . 216
...................................
Carpeting . 216 ......................................
Exterior . 214
.........................................
Fabric . 217
.......................................
Interior . 216
...................................
Seat Belts . 218
...........................................
Vinyl . 217
....................................
Windows . 218
.........................
Clock, Setting the . 109
...................................
Clutch Fluid . 178
........................
CO in the Exhaust . 256
............
Cold Weather, Starting in . 143
..............................
Compact Spare . 222
.............
Controls, Instruments and . 55
Coolant
........................................
Adding . 171
....................................
Checking . 133
.........................
Proper Solution . 171
...................................
Replacing . 173
...................
Temperature Gauge . 64
....................
Corrosion Protection . 219
Crankcase Emissions Control
........................................
System . 256
...............................
Cruise Control . 124
Index
C
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