2004 HONDA ACCORD COUPE catalytic converter

This shows the temperature of the
engine’s coolant. During normal
operation, the pointer should rise to
about the middle of the gauge. In
severe driving conditions, the pointer
mayriseintotheupperhalf of the
gauge. If it reaches the red (Hot)
mark, pull saf ely to the side of the
road. Turn to page for
instructions and precautions on
checking the engine’s cooling
system.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.
266
Temperature Gauge Fuel Gauge
Gauges
Inst rument s and Cont rols67
NOTICE:
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 parked
on an incline.
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.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.
Make sure the moonroof (if
equipped) and the windows are
closed.
Turn of f the lights.
Place any packages, valuables, etc.
in the trunk or take them with you.
Lockthedoorswiththekeyorthe
remote transmitter.
Check the indicator on the
instrument panel to verif y that the
security system is set.
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.
On vehicles with security system
Parking T ips
Driving
Parking T ips
187
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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 . 282
Specif ications
..................
(4-cylinder Models) . 284
Specif ications ..................
(6-cylinder Models) . 286
DOT Tire Quality Grading .....................
(U.S.Vehicles) .288
.................................
Treadwear . 288
......................................
Traction . 288
.............................
Temperature . 289
.................................
Tire Labeling . 290 .........................
Oxygenated Fuels . 291
......
Driving in Foreign Countries . 292
.......................
Emissions Controls . 293
.....................
The Clean Air Act . 293
Crankcase Emissions Control
....................................
System . 293
Evaporative Emissions Control ....................................
System . 293
Onboard Ref ueling Vapor ................................
Recovery . 293
...
Exhaust Emissions Controls . 294
....................
PGM-FI System . 294
Ignition Timing Control
................................
System . 294
Exhaust Gas Recirculation ...................
(EGR) System . 294
Three Way Catalytic ...........................
Converter . 294
....................
Replacement Parts . 294
..
Three Way Catalytic Converter . 295
..............
State Emissions Testing . 296
....
Testing of Readiness Codes . 296
T echnical Inf ormat ion
T echnical Inf ormation281
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If you are planning to take your
Honda outside the U.S. or Canada,
contact the tourist bureaus in the
areas you will be traveling in to f ind
out about the availability of unleaded
gasoline with the proper octane
rating.
If unleaded gasoline is not available,
be aware that using leaded gasoline
in your Honda will af f ect perf or-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. and
Canadian emissions regulations, and
will be illegal to operate in North
America. To bring your vehicle back
into compliance will require the re-
placement of several components,
such as the oxygen sensors and the
three way catalytic converter. These
replacements are not covered under
warranty.
Driving in Foreign Countries
T echnical Inf ormation292
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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 ), 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
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.
2
2
Emissions Cont rols
T echnical Inf ormation
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
294
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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. Keep the engine tuned-up.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
T echnical Inf ormation295
4-cylinder models
6-cylinder models
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTERS
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......
Taillights, Changing Bulbs in . 238
.
Taking Care of the Unexpected . 255
Technical Descriptions
......
DOT Tire Quality Grading . 288
.....
Emissions Control Systems . 293
.....................
Oxygenated Fuels . 164
Three Way Catalytic
...............................
Converter . 295
.......................
Temperature Gauge . 67 ........
Temperature, Inside Sensor . 119
....................
Temperature, Outside . 66
..............
Tether Anchorage Points . 45
..
Three Way Catalytic Converter . 295
..................
Tilt the Steering Wheel . 74
..........................
Time, Setting the . 154
....................................
Timing Belt . 232
....................................
Tire Chains . 250
.........
Tire, How to Change a Flat . 257
...........................
Tire Inf ormation . 290
...............................................
Tires . 245
......................
Air Pressure . 245, 246
........................................
Chains . 250
.........................
Checking Wear . 247
..........................
Compact Spare . 256
......
DOT Tire Quality Grading . 288
......................................
Inf lation . 245
..................................
Inspection . 247
.....................................
Labeling . 290
...................................
Replacing . 248
......................................
Rotating . 248
...........................................
Snow . 250
....................
Specif ications . 285, 287
...................
Tools, Tire Changing . 257
Towing
.....................................
A Trailer . 194 ................
Emergency Wrecker . 272
....
Equipment and Accessories . 196
.....................
Weight Limit . 194, 195
..
Traction Control System (TCS) . 191
...
TCS Activation Indicator . 60, 192
......................
TCS Indicator . 60, 191
...............
TCS ON/OFF Switch . 192
.............................
Trailer Loading . 194
......................
Trailer Towing Tips . 198
Transmission
Checking Fluid Level, ......................
Automatic . 225, 226
Checking Fluid Level, ...................................
Manual . 228
..................
Fluid Selection . 225, 228
..............
Identif ication Number . 283
.............
Shif ting the Automatic . 183
..................
Shif ting the Manual . 180
.....................................
Treadwear . 288
.......................................
Trip Meter . 66
................................................
Trunk . 82
....................
Emergency Opener . 82
.........................................
Hooks . 176
.................................
Opening the . 82
.............
Open Monitor Indicator . 61
....................................
Turn Signals . 70
Steering Wheel
..................................
Adjustment . 74
.............
Anti-theft Column Lock . 77
...............
Steering Wheel Buttons . 152
Stereo Sound
........................................
System . 120
....................
Storing Your Vehicle . 254
........................................
Sun Visor . 101
........................
Sunglasses Holder . 103
Supplemental Restraint System
......................................
Servicing . 30
.........................
SRS Indicator . 27, 59
...................
System Components . 21
..................................
Synthetic Oil . 218
Index
T
VIII
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