2004 HONDA ACCORD COUPE engine

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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If you take your vehicle f or a state
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions.If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing.
Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).
Make sure the vehicle has been
parked with the engine of f f or 8
hours or more.
Make sure the ambient
temperature is between 20° and
95°F. Without touching the accelerator
pedal, start the engine, and let it
idle f or 20 seconds.
Keep the vehicle in Park
(automatic transmission) or
Neutral (manual transmission).
Increase the engine speed to 2,000
rpm and hold it there until the
temperature gauge rises to at least
1/4of thescale(approximately3
minutes).
St at e Emissions T est ing
T echnical Inf ormation
T esting of Readiness Codes
296
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This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
This manual describes the procedures involved in the
replacement of damaged body parts.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
304 NOTE: Dealers and Companies please provide dealer or company name,
and also the name of the person to whose attention the shipment should
be sent. For purchases outside U.S.A. please write to the address shown
below for a quotation.
P.O. BOX 07280·DETROIT, MICHIGAN 48207·1-800-782-4356
Customer Name Attention
Apartment Number
State & Zip Code
City
Daytime Telephone Number
Check or money order enclosed payable to Helm Inc U.S. funds only.
Do not send cash
Master
Card VISA Check here if your billing address is different
from the shipping address shown above.
Account Number Expiration: Mo. Yr.
CUSTOMER SIGNATURE DATE
Street Address No P.O. Box Number
()
These Publications cannot be returned for credit without receiving advance authorization within 14
days of delivery. On returns, a restocking fee may be applied against the original order.
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CONT INUED
....................................
Accessories . 171
ACCESSORY (Ignition Key
.......................................
Position) . 77
............
Accessory Power Sockets . 103
....................
Additives, Engine Oil . 218
...............................
Airbag (SRS) . 9, 21
............................
Air Conditioning . 108
.................................
Usage . 113, 115
...............
Air Pressure, Tires . 245, 246
.......................
Alcohol in Gasoline . 164
......................................
Antif reeze . 221
Anti-lock Brakes (ABS)
...............................
Indicator . 60, 189
...................................
Operation . 189
..............
Anti-thef t, Audio System . 153
.
Anti-thef t Steering Column Lock . 77
............................................
Armrest . 86
................................
Audio System . 120
...
Automatic Lighting Off Feature . 71
...
Automatic Seat Belt Tensioners . 19
.............
Automatic Speed Control . 156
..............
Automatic Transmission . 183
..................
Capacity, Fluid . 284, 286
.......
Checking Fluid Level . 225, 226 .......................................
Shif ting . 183
Shif t Lever Position
...............................
Indicators . 183
................
Shif t Lever Positions . 184
....................
Shif t Lock Release . 186
Battery Charging System ...........................
Indicator . 58, 269
............................
Jump Starting . 264
..............................
Maintenance . 252
....................
Specif ications . 285, 287
..............................
Bef ore Driving . 163
....................................
Belts,Seat .8,18
...........................
Beverage Holders . 99
..................................
Booster Seats . 48
Brakes
...........
Anti-lock System (ABS) . 189
.............
Break-in, New Linings . 164
....................
Bulb Replacement . 238
...........................................
Fluid . 230
.........................................
Parking . 97
.................
System Indicator . 59, 271
........................
Wear Indicators . 188 .............................
Braking System . 188
........................
Break-in, New Car . 164
..
Brightness Control, Instruments . 72
........................
Brights, Headlights . 70
Bulb Replacement
..........................
Back-up Lights . 238
..............................
Brake Lights . 238
................
Front Parking Lights . 237
.................................
Headlights . 233
.........
High-mount Brake Light . 239
....................
Specif ications . 285, 287
....................
Turn Signal Lights . 237
..............................
Bulbs, Halogen . 233
...................
Capacities Chart . 284, 286
.............
Carbon Monoxide Hazard . 51
....................
Cargo, How to Carry . 173
......................................
Cargo Net . 176
..............
CAUTION, Explanation of . ii
.........................................
CD Care . 142
...................................
CD Changer . 137
.....
CD Changer Error Messages . 144
Index
A
B
C
I
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Î
................
DANGER, Explanation of . ii
...................................
Dashboard . 2, 57
................
Daytime Running Lights . 71
Daytime Running Lights
.......................................
Indicator . 63
.................................
Dead Battery . 264
............
Def ects, Reporting Saf ety . 302
................
Def ogger, Rear Window . 73
Defrosting the
....................................
Windows . 114
............................
Dimensions . 284, 286
...............
Dimming the Headlights . 70
Dipstick
.
Automatic Transmission . 225, 226
..................................
Engine Oil . 168
..........................
Directional Signals . 70
........
Disc Brake Wear Indicators . 188
.....................
Disposal of Used Oil . 220
Doors
..............
Locking and Unlocking . 78
......................
Power Door Locks . 78
..........
DOT Tire Quality Grading . 288
Downshif ting, Manual
.............................
Transmission . 180
.....................
CD Error Messages . 143
.......................................
CD Player . 134
........................
CD Pocket, Center . 100
........................
Certif ication Label . 282
.................................
Chains, Tires . 250
....................
Changing a Flat Tire . 257
Changing Oil
........................................
How to . 218
.............................
When to . 205, 210
...
Charging System Indicator . 58, 269
............
Checklist, Bef ore Driving . 178
.....................................
Child Saf ety . 32
..............................
Booster Seats . 48
.............................
Child Seats . 32, 39
Inportant Saf ety
.........................
Reminders . 32, 36
..........................................
Inf ants . 37
..........................
Larger Children . 47
.........................................
LATCH . 41
......................
Risks with Airbags . 33
.............................
Small Children . 38
.........................................
Tethers . 45
.........
Where Should a Child Sit? . 33
.......................................
Child Seats . 39
.........................................
LATCH . 41
..........
Tether Anchorage Points . 45 Cleaning
...................................
Seat Belts . 240
...............
Climate Control System . 115
..............................................
Clock . 154
...................................
Clutch Fluid . 231
........................
CO in the Exhaust . 294
...................................
Coin Pocket . 101
............
Cold Weather, Starting in . 179
......................
Compact Spare Tire . 256
.................
Console Compartment . 100
...............
Consumer Inf ormation . 300
.............
Controls, Instruments and . 55
Coolant
........................................
Adding . 221
....................................
Checking . 169
.........................
Proper Solution . 221
...................
Temperature Gauge . 67
Crankcase Emissions Control ........................................
System . 293
................
Cruise Control Indicator . 63
............
Cruise Control Operation . 156
.....................................
Cup Holders . 99
.............
Customer Service Of f ice . 300
Index
D
II
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CONT INUED
...........
Driver and Passenger Safety . 5
...........................................
Driving . 177
....................................
Economy . 170
................
In Foreign Countries . 292
..........
Dual Temperature Control . 117
..................
Dust and Pollen Filter . 242
..............................
Economy, Fuel . 170
..................................
Emergencies . 255
.............
Battery, Jump Starting . 264
...........
Brake System Indicator . 271
................
Changing a Flat Tire . 257
.....
Charging System Indicator . 269
..................
Checking the Fuses . 275
.........
Hazard Warning Flashers . 72
............................
Jump Starting . 264
.....
Low Oil Pressure Indicator . 268
...
Malf unction Indicator Lamp . 269
...
Manually Closing Moonroof . 274
..................
Overheated Engine . 266
.......................................
Towing . 272
...........................
Emergency Brake . 97
......................
Emergency Flashers . 72
......................
Emergency Towing . 272 ............
Emergency Trunk Opener . 82
.......................
Emissions Controls . 293
.............
Emissions Testing, State . 296 Engine
....
Coolant Temperature Gauge . 67
.........................
If It Won’t Start . 262
Malf unction Indicator
................................
Lamp . 58, 269
........
Oil Pressure Indicator . 58, 268
..............
Oil, What Kind to Use . 217
...............................
Overheating . 266
....................
Specif ications . 285, 287
....................
Speed Limiter . 182, 185
.......................................
Starting . 179
..........
Engine Speed Limiter . 182, 185
......................
Ethanol in Gasoline . 164
.
Evaporative Emissions Controls . 293
...............................
Exhaust Fumes . 51
Expectant Mothers, Use of Seat
........................................
Belts by . 16
...................................
Fan, Interior . 110
Features, Comfort and
..............................
Convenience . 107 ....................
Filling the Fuel Tank . 165
Filters
.........................
Dust and Pollen . 242
...............................................
Oil . 218
5-speed Manual Transmission ...............
Checking Fluid Level . 228
5-speed Manual Transmission ................................
Shif ting the . 180
.............
Flashers, Hazard Warning . 72
...................
Flat Tire, Changing a . 257
Fluids
.
Automatic Transmission . 225, 226
..........................................
Brake . 230
.........................................
Clutch . 231
..............
Manual Transmission . 228
..........................
Power Steering . 231
..................
Windshield Washer . 224
...........................
Folding Rear Seat . 89
.....
Foreign Countries, Driving in . 292
..........................
Four-way Flashers . 72
..............................
Front Airbags . 9, 22
..................................
Front Seat . 83, 85
................................
Adjusting . 83, 85
.........................................
Heaters . 90
.....................................
Airbags . 9, 22
Index
E
F
III
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Fuel . 164
......................
Fill Door and Cap . 165
...........................................
Gauge . 67
................
Octane Requirement . 164
...............................
Oxygenated . 164
........................
Tank, Ref ueling . 165
.....................
Fuses, Checking the . 275
...............
Gas Mileage, Improving . 170
..........................................
Gasohol . 164
.........................................
Gasoline . 164
...........................................
Gauge . 67
................
Octane Requirement . 164
........................
Tank, Ref ueling . 165
................
Gas Station Procedures . 165
Gauges
...
Engine Coolant Temperature . 67
...............................................
Fuel . 67
Gearshif t Lever Positions ..........
Automatic Transmission . 183
5-speed Manual
.........................
Transmission . 180
6-speed Manual .........................
Transmission . 180 ........................................
Glove Box . 99
Gross Vehicle Weight Rating
.....................................
(GVWR) . 195 ... Identif ication Number, Vehicle . 282
Ignition
..............................................
Keys . 75
...........................................
Switch . 77
............
Timing Control System . 294
........................
Immobilizer System . 76
.........
Important Safety Precautions . 6
.........................................
Indicators . 58
.......
ABS (Auti-lock Brake) . 60, 189
Brake (Parking and Brake
............................
System) . 59, 271
................
Charging System . 58, 269
.............................
Cruise Control . 63
DRL (Daytime Running
......................................
Lights) . 63
...................................
High Beam . 63
........
Key (Immobilizer System) . 61
......................................
Low Fuel . 62
................
Low Oil Pressure . 58, 268
...........................
Side Airbag Of f . 59
...............................................
SRS . 59
Turn Signal and Hazard
...................................
Warning . 61
..............................
Washer Level . 63
.............
Halogen Headlight Bulbs . 233
..............
Hazard Warning Flashers . 72
........................................
Headlights . 70
........................................
Aiming . 233
..............
Automatic Lighting Off . 71
............
Daytime Running Lights . 71
............
Low Beams, Turning on . 70
.........................
Reminder Chime . 70
........
Replacing Halogen Bulbs . 233
...................................
Turning on . 70
..............................
Head Restraints . 88
.....................
Heating and Cooling . 108
.................................
Heated Mirror . 96
.....................................
Heater, Seat . 90
.............
High Altitude, Starting at . 179
HomeLink Universal
................................
Transceiver . 159
....................................
Hood Latch . 232
.......................
Hood, Opening the . 166
...........................
Hydraulic Clutch . 231
Index
G H
I
IV
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