2004 HONDA CIVIC COUPE catalytic converter

The odometer shows the total dis-
tance your vehicle has been driven.
It measures miles in U.S. models and
kilometers in Canadian models.
It is illegal under U.S. f ederal law and
Canadian provincial regulations to
disconnect, reset, or alter the
odometer with the intent to change
the number of miles or kilometers
indicated.The trip meter shows the number of
miles (U.S.) or kilometers (Canada)
driven since you last reset it.
There are two trip meters: Trip A
and Trip B. Each trip meter works
independently, so you can keep track
of two dif f erent distances.
To reset a trip meter, display it and
then press and hold the Select/Reset
knob until the number resets to ‘‘0.0’’.
This shows how much f uel you have.
It may show slightly more or less
than the actual amount. The needle
returns to the bottom after you turn
of f the ignition.
The odometer and the trip meters
use the same display. Switch
between these displays by pressing
the Select/Reset knob.
Gauges
Odometer/T rip Meter
Fuel Gauge
U.S.:HX,LX,EX,Canada:LX,Si
Inst rument s and Cont rols60
TEMPERATURE GAUGE
FUEL GAUGE
ODOMETER/TRIP METER
The U.S. instrument
panel is shown. TACHOMETER
SPEEDOMETER
SELECT/RESET KNOB
Avoid driving with an extremely low
f uel level. Running out of f uel could
cause the engine to misf ire, damaging
the catalytic converter.
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Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly or
your vehicle may roll if it is on an
incline.Make sure the moonroof and the
windows are closed.
Turn of f the lights.
Place any packages, valuables, etc.
in the trunk or take them with you.
Lock the doors.
If your vehicle has an automatic
transmission, set the parking brake
bef ore you put the transmission in
Park. This keeps the vehicle f rom
moving and putting pressure on the
parking mechanism in the
transmission.
Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.If the vehicle is f acing uphill, turn
the f ront wheels away f rom the
curb. If you have a manual
transmission, put it in f irst gear.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If you have a manual
transmission, put it in reverse gear.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.
Driving
Parking T ips
Parking
137
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Thediagramsinthissectiongive
you the dimensions and capacities of
your Honda, and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.................
Identif ication Numbers . 206
................................
Specif ications . 208
DOT Tire Quality Grading
......................
(U.S. Vehicles) . 210
.................................
Treadwear . 210
......................................
Traction . 210
.............................
Temperature . 211
.............................
Tire Labeling . 211 .......................
Emissions Controls . 212
.....................
The Clean Air Act . 212
Crankcase Emissions Control
....................................
System . 212
Evaporative Emissions Control ....................................
System . 212
Onboard Ref ueling Vapor ................................
Recovery . 212
...
Exhaust Emissions Controls . 213
....................
PGM-FI System . 213
Ignition Timing Control
................................
System . 213
Three Way Catalytic ...........................
Converter . 213
....................
Replacement Parts . 213
..
Three Way Catalytic Converter . 214
..............
State Emissions Testing . 215
....
Testing of Readiness Codes . 215
T echnical Inf ormat ion
T echnical Inf ormation205
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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 f rom
the rest of your vehicle. Read your
warranty manual f or more inf orma-
tion.
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 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 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
T echnical Inf ormation
Replacement Parts
Exhaust Emissions Controls
PGM-FI Syst em Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
213
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The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Honda part
or its equivalent.
The three way catalytic converter
must operate at a high temperature
for the chemical reactions to take
place. It can set on f ire any com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles.A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your vehicle’s three way
catalytic converter.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective. Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Keep the engine tuned-up.
(U.S. EX and Canadian Si models) (U.S. DX, HX, LX and Canada DX,
LX models)
Three Way Catalytic Converter
T echnical Inf ormation214
THREE WAY CATALYTIC CONVERTER THREE WAY CATALYTIC CONVERTER
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Î
Unexpected, Taking Care..........................................
of the . 181
....
Unif orm Tire Quality Grading . 210 ........................
Unleaded Gasoline . 114
.......
Used Oil, How to Dispose of . 155
..................................
Vanity Mirror . 88
.................
Vehicle Capacity Load . 123
......................
Vehicle Dimensions . 208
....
Vehicle Identif ication Number . 206
.............................
Vehicle Storage . 179
.......................................
Ventiration . 92
.................................................
VIN . 206
..................................
Viscosity, Oil . 153
.............
WARNING, Explanation of . ii
.........
Warning Labels, Location of . 49
..................
Warranty Coverages . 219
Washer, Windshield
........
Checking the Fluid Level . 156
.......................................
Indicator . 58
.....................................
Operation . 64
Wheels ...............
Adjusting the Steering . 68
............
Alignment and Balance . 175
Technical Descriptions
......
DOT Tire Quality Grading . 210
.....
Emissions Control Systems . 212
.....................
Oxygenated Fuels . 114
Three Way Catalytic
...............................
Converter . 214
.......................
Temperature Gauge . 61
..............
Tether Anchorage Points . 42
..
Three Way Catalytic Converter . 214
..................
Tilt the Steering Wheel . 68
..........................
Time, Setting the . 108
....................................
Timing Belt . 162
....................................
Tire Chains . 177
.........
Tire, How to Change a Flat . 183
...............................................
Tires . 172
..............................
Air Pressure . 173
.........................
Checking Wear . 174
..........................
Compact Spare . 182
......
DOT Tire Quality Grading . 210
......................................
Inf lation . 172
..................................
Inspection . 174
..............................
Maintenance . 175
...................................
Replacing . 176
......................................
Rotating . 175
...........................................
Snow . 177
............................
Specif ications . 209 ..................
Technical Inf ormation . 205
...................
Tools, Tire Changing . 183
Towing
.....................................
A Trailer . 138
................
Emergency Wrecker . 203
Transmission Checking Fluid Level, ..............................
Automatic . 160
Checking Fluid Level, ...................................
Manual . 162
..................
Fluid Selection . 161, 162
..............
Identif ication Number . 206
.............
Shif ting the Automatic . 130
..................
Shif ting the Manual . 128
.....................................
Treadwear . 210
.......................................
Trip Meter . 60
................................................
Trunk . 73
........................................
Opening . 73
...................
Open Monitor Light . 58
....................................
Turn Signals . 65
Index
U W
V
VIII
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