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
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.
The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our systems work
together to control the engine’s
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI system uses sequential
multiport f uel injection. It has three
subsystems: air intake, engine
control, and f uel control. The
powertrain control module (PCM) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles 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 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 ), nitrogen
(N ), and water vapor.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI System Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
Technical Inf ormation
301
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CONT INUED
...
Accessories and Modif ications .189
ACCESSORY (Ignition Key
.......................................
Position) .78
.............
Accessory Power Socket .106
..................
Active Head Restraints .94
....................
Additives, Engine Oil .233
...............................
Airbag (SRS) .9, 21
...
Airbags, Additional Information .21
...
Additional Safety Precautions .32
..........
AdvancedAirbagSystem .26
.............................
Airbag Service .31
How the Passenger Airbag Of f
......................
Indicator Works .30
How the Side Airbag Of f ......................
Indicator Works .30
..
How the SRS Indicator Works .29
How Your Front Airbags
.........................................
Work .24
...
How Your Side Airbags Work .27
How Your Side Curtain Airbags
.........................................
Work .29
........................
SRS Components .21
..............
Air Conditioning System .108
.......................
Air Pressure, Tires .255 ......................................
Antif reeze .236
Anti-lock Brakes (ABS)
...............................
Indicator .60, 208
...................................
Operation .208
..............
Anti-thef t, Audio System .173
Anti-thef t Steering Column
..............................................
Lock .78
............................................
Armrest .95
................................
Audio System .112
.....
Auto Door Locking/Unlocking .81
.........................
Auto Door Locking .81
.....................
Auto Door Unlocking .83
...
Automatic Seat Belt Tensioners .19
.............
Automatic Speed Control .176
..............
Automatic Transmission .202
..........................
Capacity, Fluid .293
...............
Checking Fluid Level .240
.......................................
Shif ting .202
Shif t Lever Position
...............................
Indicators .202
................
Shif t Lever Positions .203
....................
Shif t Lock Release .205
......................
Auxiliary Input Jack .172 Battery
Charging System ...........................
Indicator .65, 277
............................
Jump Starting .273
..............................
Maintenance .262
............................
Specif ications .294
..............................
Bef ore Driving .179
....................................
Belts,Seat .8,18
.........................
Beverage Holders .106
Brakes
...........
Anti-lock System (ABS) .208
.............
Break-in, New Linings .180
....................
Bulb Replacement .247
...........................................
Fluid .242
.................
Pad Wear Indicators .207
.......................................
Parking .103
.................
System Indicator .59, 279
.............................
Braking System .207
.................
Break-in, New Vehicle .180
..
Brightness Control, Instruments .73
........................
Brights, Headlights .72
Index
A B
INDEX
I
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