2001 HONDA CIVIC COUPE engine

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. This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced. 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.The emissions control systems are
covered by warranties separate from
the rest of your car. Read your
warranty manual for more inf orma-
tion. 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
Genuine Honda replacement parts or
their equivalent f or repairs. Using
lower quality parts may increase the
emissions f rom your car.
The Onboard Ref ueling Vapor
Recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f .
The exhaust emissions controls
include three systems: PGM-FI,
Ignition Timing Control and Three
Way Catalytic Converter. These
three 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 from the crankcase and
evaporative emissions control
systems.
2
2
Replacement Parts
Onboard Ref ueling Vapor
Recovery
Exhaust Emissions ControlsPGM-FI Syst em
Three Way Catalytic Converter
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
T echnical Inf ormation301

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.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.
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.
Park your car away f rom high grass,
dry leaves, or other f lammables.
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 car’s three way catalytic
converter. Keep the engine tuned-up.
Have your car diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
(EX)
(DX, LX, HX)
Three Way Catalytic Converter
T echnical Inf ormation302
T TH
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CAA T
TA
A L
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ICC C
COON NVVE
ER
RT TE
ER
R T
TH
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REEE
E W
WA AY
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R

CONT INUED
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).
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.
T echnical Inf ormation
St at e Emissions T est ing
T esting of Readiness Codes
303

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#
) This manual describes the procedures involved in the
replacement of damaged body parts. 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.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
312
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days of delivery. On returns, a restocking fee may be applied against the original order.

CONT INUED
...
Accessories and Modifications . 169
................................
Accessories .169
...
Additional Safety Precaution . 170
............................
Modif ications .170
ACCESSORY (Ignition Key .......................................
Position) .82
.............
Accessory Power Socket . 103
....................
Additives, Engine Oil . 209
.............................
Airbag (SRS) .10, 48
.....................
Air Cleaner Element .225
..............
Air Conditioning System . 108
......................
Maintenance .234, 235
.........................................
Usage .108
.......................
Air Outlets (Vents) .110
.......................
Air Pressure, Tires .238
.........................
Normal Driving .239
.......................
Alcohol in Gasoline .298
......................................
Antif reeze .213
Anti-lock Brakes (ABS) ....................
Indicator Light .62, 192
...................................
Operation .190
Anti-thef t Steering Column ..............................................
Lock .82
..........................
Appearance Care .255 ................
Audio System . 116,128,140
...............
Automatic Speed Control . 76
..............
Automatic Transmission . 180
..........................
Capacity,Fluid .294
...............
Checking Fluid Level . 220
.......................................
Shif ting .181
.
Shif t Lever Position Indicator . 180
................
Shif t Lever Positions . 181
....................
Shif t Lock Release . 184
Battery Charging System ...........................
Indicator .62, 278
............................
Jump Starting .273
..............................
Maintenance .230
............................
Specif ications .294
..............................
Bef ore Driving .161
....................................
Belts,Seat .8,44
...........................
Beverage Holder .102
.................................
Body Repairs .262
Brakes ...........
Anti-lock System (ABS) . 190
.............
Break-in, New Linings . 162
............
Bulb Replacement . 250,251 ...........................................
Fluid .223
.......................................
Parking .100
.................
System Indicator . 62,282
........................
Wear Indicators .189
.............................
Braking System .189
........................
Break-in, New Car .162
..
Brightness Control, Instruments . 71
........................
Brights, Headlights .70
Bulb Replacement ..........................
Back-up Lights .251
..............................
Brake Lights .250
..............................
Ceiling Light .253
................
Front Parking Lights . 248
........
Front Side Marker Lights . 248
.................................
Headlights .247
.........
High-mount Brake Light . 251
.................
License Plate Lights . 251
.........
Rear Side Marker Lights . 250
............................
Specif ications .294
...................................
Spotlights .253
...............................
Trunk Light .252
....................
Turn Signal Lights . 248
..............................
Bulbs, Halogen .247
Index
A
B
I

Î
............................
Capacities Chart .294
.............
Carbon Monoxide Hazard . 54
...................................
Cargo Hook .104
.............................
Carrying Cargo .171
Cassette Player ............................................
Care .158
...................
Operation . 122,134,155
..............
CAUTION, Explanation of . ii
..................
CD Changer . 125,137,151
......................
CD Player .125, 137,149
..................................
Ceiling Light .105
........................
Certif ication Label .292
............................................
Chains .244
....................
Changing a Flat Tire .265
............
Changing Engine Coolant . 215
Changing Oil ........................................
How to .211
......................................
When to .198
...
Charging System Indicator . 62,279
............
Checklist, Bef ore Driving . 176
.....................................
Child Saf ety .21
Child Seats .......................
Lower Anchorage .42
..........
Tether Anchorage Points . 41....................
Cleaner Element, Air . 225
Cleaning ......................................
Exterior .256
.......................................
Interior .258
...................................
Seat Belts .259
...........................................
Vinyl .259
....................................
Windows .260
.........
Clock, Setting the . 121,133,143
...................................
Clutch Fluid .223
........................
CO in the Exhaust .303
......................................
Coat Hook .104
............
Cold Weather, Starting in . 177
..............................
Compact Spare .264
...............
Consumer Inf ormation . 306
.............
Controls, Instruments and . 57
Coolant ........................................
Adding .213
....................................
Checking .167
.........................
Proper Solution .213
...................................
Replacing .215
...................
Temperature Gauge . 68
....................
Corrosion Protection .261
Crankcase Emissions Control ........................................
System .300
..............
Cruise Control Operation . 76
..........
Customer Relations Of f ice . 306................
DANGER, Explanation of . ii
...................................
Dashboard .2, 58
................
Daytime Running Lights . 71
............
Def ects, Reporting Saf ety . 310
........................
Def og and Def rost .113
................
Def ogger, Rear Window . 74
..............
Def rosting the Windows . 113
....................................
Dimensions .294
...............
Dimming the Headlights . 71
Dipstick ..........
Automatic Transmission . 220
..................................
Engine Oil .166
..........................
Directional Signals .72
........
Disc Brake Wear Indicators . 189
.....................
Disposal of Used Oil .212
Doors ..............
Locking and Unlocking . 83
......................
Power Door Locks .84
..........
DOT Tire Quality Grading . 296
Downshif ting, 5-speed Manual .............................
Transmission .178
.....................................
Drive Belts .237
...........
Driver and Passenger Safety . 5
Index
C D
II

CONT INUED
...........................................
Driving .175
....................................
Economy .168
.........................
In Bad Weather .193
................
In Foreign Countries . 299
..............................
Economy, Fuel .168
............
Emergencies on the Road . 289
.............
Battery, Jump Starting . 273
...........
Brake System Indicator . 282
................
Changing a Flat Tire . 265
.....
Charging System Indicator . 279
..................
Checking the Fuses . 285
.....
Low Oil Pressure Indicator . 278
...
Malf unction Indicator Lamp . 280
...
Manually Closing Moonroof . 282
..................
Overheated Engine . 275
.........................
Emergency Brake .100
......................
Emergency Flashers .74
......................
Emergency Towing .289
............
Emergency Trunk Opener . 89
.......................
Emissions Controls .300
Engine ....
Coolant Temperature Gauge . 68
.................................
Drive Belts .237 Malf unction Indicator
................................
Lamp .63, 280
........
Oil Pressure Indicator . 62,278
..............
Oil, What Kind to Use . 209
...............................
Overheating .275
............................
Specif ications .294
.......................................
Starting .177
......
Engine Speed Limiter . 179,183
......................
Ethanol in Gasoline .298
.
Evaporative Emissions Controls . 300
...............................
Exhaust Fumes .54
Expectant Mothers, Use of Seat ........................................
Belts by .19
..................
Exterior, Cleaning the . 256
............................
Fabric, Cleaning .259
...................................
Fan, Interior .108
Features, Comfort and ..............................
Convenience .107
....................
Filling the Fuel Tank . 163
Filters ................................
Air Cleaner .225
.......................
Air Conditioning .235
...............................................
Oil .211 5-speed Manual Transmission
...............
Checking Fluid Level . 222
................................
Shif ting the .178
.............
Flashers, Hazard Warning . 74
...................
Flat Tire, Changing a . 265
Fluids ..........
Automatic Transmission . 220
..........................................
Brake .223
.........................................
Clutch .223
..............
Manual Transmission . 222
..........................
Power Steering .224
..................
Windshield Washer . 219
FM Stereo Radio ...................................
Reception .147
...........................
Folding Rear Seat .94
.....
Foreign Countries, Driving in . 299
..........................
Four-way Flashers .74
.................................................
Fuel .162
......................
Fill Door and Cap .163
...........................................
Gauge .67
................
Octane Requirement . 162
...............................
Oxygenated .298
........................
Reserve Indicator .63
........................
Tank, Filling the .163
Index
E
F
III

.....................
Fuses, Checking the .284
...............
Gas Mileage, Improving . 168
..........................................
Gasohol .298
.........................................
Gasoline .162
...............
Fuel Reserve Indicator . 63
...........................................
Gauge .67
................
Octane Requirement . 162
........................
Tank, Filling the .163
................
Gas Station Procedures . 163
Gauges ...
Engine Coolant Temperature . 68
...............................................
Fuel .67
...............................
Speedometer .66
.................................
Tachometer .66
Gearshif t Lever Positions ..........
Automatic Transmission . 180
5-speed Manual .........................
Transmission .178
..............................
Glass Cleaning .260
......................................
Glove Box .101 .............
Halogen Headlight Bulbs . 247
..............
Hazard Warning Flashers . 74
Headlights ............
Daytime Running Lights . 71
..................
High Beam Indicator . 63
........................
Reminder Beeper .70
........
Replacing Halogen Bulbs . 250
...................................
Turning on .70
..............................
Head Restraints .92
.....................
Heating and Cooling .108
.............
High Altitude, Starting at . 177
.................
High-Low Beam Switch . 70
..............
High-mount Brake Light . 247
....................................
Hood Latch .226
.......................
Hood, Opening the .164
..................................................
Horn .69
...........................
Hydraulic Clutch .223
.................................
Hydroplaning .194
...
Identif ication Number, Vehicle . 292
Ignition ..............................................
Keys .79 ...........................................
Switch .82
............
Timing Control System . 303
.........
Important Safety Precautions . 6
Indicators, Instrument .............................................
Panel .59
...............................
Inf ant Restraint .30
Inf ant Seats .......................
Lower Anchorage .42
..........
Tether Anchorage Points . 41
...................
Inf lation, Proper Tire . 238
.........................
Normal Driving .239
...................................
Inside Mirror .98
.............................
Inspection, Tire .240
........................
Instrument Panel .2, 58
........
Instrument Panel Brightness . 71
...........................
Interior Cleaning .258
...............................
Interior Lights .105
........................................
Introduction . i
........................
Jacking up the Car .265
.......................................
Jack, Tire .265
................................
Jump Starting .273
Index
G H
IJ
IV