Exhaust Emissions Controls
The exhaust emissions controls
include four 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
come out the tailpipe. The exhaust
emissions control systems are
separate from the crankcase and
evaporative emissions controlsystems.PGM-FI System
The PGM-FI system uses sequential
multiport fuel injection. It has three
subsystems: air intake, engine
control, and fuel 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 fuel to inject
under all operating conditions.
Ignition Timing Control System
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
Exhaust Gas Recirculation (EGR)System
The exhaust gas recirculation (EGR)
system takes some of the exhaust gas
and routes it back into the intake
manifold. Adding exhaust gas to the
air/fuel mixture reduces the amount
of NOx produced when the fuel is burned.
Three Way Catalytic Converter
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 2), nitrogen
(N 2), and water vapor.
Replacement Parts
The emissions control systems are
designed and certified to work
together 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 for repairs. Using lower
quality parts may increase the
emissions from your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for moreinformation.
Emissions Controls
329
Technical Information
Main MenuTable of Contents
A
Accessories andModifications .......................... 208
ACCESSORY (Ignition Key
Position) ................................... 80
Accessory Power Socket ............106
Additives, Engine Oil .................256
Adjusting the Steering Wheel ......77
Advanced Airbags ........................26
Airbag (SRS) ............................ 9, 22
Air Conditioning System ............110
Usage ...................................... 112
Air Pressure, Tires ..............275, 276
Alcohol in Gasoline ....................200
Antifreeze ................................... 258
Anti-lock Brakes (ABS) Indicator ............................ 62, 233
Operation ................................ 233
Anti-theft, Audio System .............192
Anti-theft Steering Column Lock ......................................... 80
Audio Antenna ........................... 270
Auto Door Locking .......................83
Auto Door Locking/Unlocking ....83 Auto Door Unlocking
...................
86
Automatic Seat Belt Tensioners ...20
Automatic Speed Control ...........195
Automatic Transmission ............221
Capacity, Fluid ........................321
Checking Fluid Level ..............261
Paddle Shifters ........................226
Shifting ................................... 221
Shift Lever Position
Indicators ............................ 221
Shift Lever Positions ...............222
Shift Lock Release ...................225
Automatic Transmission Fluid ...261
Auxiliary Input Jack ...................191
Average Fuel Economy ................70
B
Battery Charging System
Indicator ........................ 60, 305
Jump Starting .......................... 301
Maintenance ........................... 281
Specifications .......................... 322
Before Driving ........................... 199Belts, Seat
................................
8, 18
Beverage Holders ......................106
Booster Seats ............................... 50
Brakes
Anti-lock Brakes (ABS) ...........233
Break-in, New Linings .............200
Bulb Replacement ...................268
Fluid ....................................... 263
Parking ................................... 103
System Design ........................232
System Indicator ...............60, 307
Wear Indicators .......................232
Braking System .......................... 232
Break-in, New Vehicle ................200
Brightness Control,
Instruments .............................. 76
CONTINUED
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I
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