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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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Page 362 of 380
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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Page 372 of 380
CONT INUED
Battery......
Charging System Light . 58, 348
............................
Jump Starting . 342
..............................
Maintenance . 294
............................
Specif ications . 365
..............................
Bef ore Driving . 203
..........................................
Belts, Seat . 8
.........................
Beverage Holders . 104
...................................
Body Repair . 332
Brakes
...........
Anti-lock System (ABS) . 230
.............
Break-in, New Linings . 204
....................
Bulb Replacement . 317
...........................................
Fluid . 284
.......................................
Parking . 102 .........................
System Indicator . 58
........................
Wear Indicators . 229
.............................
Braking System . 229
........................
Break-in, New Car . 204
..
Brightness Control, Instruments . 69
........................
Brights, Headlights . 68
Bulb Replacement
..........................
Back-up Lights . 318
..............................
Brake Lights . 317
..............................
Ceiling Light . 320
................
Door Courtesy Light . 321
................
Front Parking Lights . 315
.................................
Headlights . 312
.........
High-mount Brake Light . 319
...................
License Plate Light . 319
............................
Specif ications . 365
...................................
Spotlights . 321
...............................
Trunk Light . 322
....................
Turn Signal Lights . 315
................
Vanity Mirror Lights . 321
..............................
Bulbs, Halogen . 312
...
Accessories and Modif ications . 212
................................
Accessories . 212
.
Additional Safety Precautions . 213
............................
Modif ications . 213
ACCESSORY (Ignition Key .......................................
Position) . 78
.............
Accessory Power Socket . 107
....................
Additives, Engine Oil . 270
.....................................
Airbag (SRS) . 9
.....................
Air Cleaner Element . 286
............................
Air Conditioning . 112
..............................
Maintenance . 299
.........................................
Usage . 112
.......................
Air Pressure, Tires . 304
.......................
Alcohol in Gasoline . 369
......................................
Antif reeze . 273
Anti-lock Brakes (ABS)
................................
Description . 230
...............................
Indicator . 57, 231
...................................
Operation . 230
.
Anti-thef t Steering Column Lock . 77
..........................
Appearance Care . 325
..........................................
Armrest . 103
................
Audio System . 134, 150, 169 .............
Automatic Speed Control . 195
..............
Automatic Transmission . 222
..........................
Capacity, Fluid . 364
.......
Checking Fluid Level . 280, 281
.......................................
Shif ting . 223
.
Shif t Lever Position Indicator . 223
................
Shif t Lever Positions . 223
....................
Shif t Lock Release . 226
Index
A
B
I
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