2001 HONDA ACCORD SEDAN Owner's Manual (in English)

Emissions Controls

Exhaust Emissions Controls
The exhaust emissions controls include three systems: PGM-FI,Ignition Timing Control and Three
Way Catalytic Converter. These three systems work together tocontrol the engine's combustion and
minimize the amount of HC, CO, and
NOx that comes out the tailpipe. The
exhaust emissions control systemsare separate from the crankcase and
evaporative emissions control
systems.
PGM-FI System

The PGM-FI System uses sequential multiport fuel 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 fuel to inject under all operat-
ing conditions.
Ignition Timing Control System
This system constantly adjusts the ignition timing, reducing the amountof HC, CO and NOx produced.
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), dinitrogen
(N2), and water vapor. Replacement Parts

The emissions control systems are
designed and certified 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 newGenuine Honda replacement parts or

their equivalent for repairs. Using

lower quality parts may increase the emissions from your car.

The emissions control systems are
covered by warranties separate from

the rest of your car. Read your

warranty manual for more informa-
tion.
Technical Information

Three Way Catalytic Converter

The three way catalytic converter contains precious metals that serveas catalysts, promoting chemical
reactions to convert the exhaust
gasses without affecting the metals.
The catalytic converter is referred 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 fire any com-
bustible materials that come near it. Park your car away from high grass,dry leaves, or other flammables. A defective three way catalytic
converter contributes to air pollution,
and can impair your engine's per-
formance. Follow these guidelines to
protect your car's three way catalyticconverter.
Always use unleaded gasoline.Even a small amount of leaded
gasoline can contaminate the catalyst metals, making the three
way catalytic converter ineffective. Keep the engine tuned-up.
Have your car diagnosed and
repaired if it is misfiring, back-
firing, stalling, or otherwise not running properly.

Technical Information

THREE WAY CATALYTIC CONVERTER

State Emissions Testing

Testing of Readiness Codes
If you take your vehicle for a state
emissions test shortly after 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 for the emissionssystems. 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 facility 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 following.
Make sure the gas tank is nearly,
but not completely, full (around 3/4).
Make sure the vehicle has been
parked with the engine off for 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 for 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 1/4 of the scale (approximately 3

minutes).

Technical Information

State Emissions Testing

Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph (80 to 90 km/h) for at least 20
minutes. Drive on the highway in
D4 (A/T) or 5th (M/T). Do not
use the cruise control. When
traffic allows, drive for 90 seconds
without moving the accelerator
pedal. (Vehicle speed may vary slightly; this is okay.) If you cannot
do this for a continuous 90
seconds because of traffic
conditions, drive for at least 30 seconds, then repeat it two more
times (for a total of 90 seconds).
Then drive in city/suburban
traffic for at least 10 minutes.
When traffic conditions allow, let the vehicle coast for severalseconds without using the
accelerator pedal or the brake

pedal.

If the testing facility determines the
readiness codes are still not set, see
your Honda dealer.

Technical Information

338

Warranty and Customer Relations
Customer RelationsInformation................................. 340
U.S. Zone Office Map.................... 341 Canada Zone Office Map.............. 342
Warranty Coverages..................... 343 Reporting Safety Defects (U.S. Vehicles)........................... 344
Authorized Manuals...................... 345

Warranty and Customer Relations

Customer Relations Information

Honda dealership personnel are
trained professionals. They should be able to answer all your questions.If you encounter a problem that your
dealership does not solve to yoursatisfaction, please discuss it with
the dealership's management. The
Service Manager or General
Manager can help. Almost all
problems are solved in this way. If you are dissatisfied with the
decision made by the dealership's
management, contact your Honda
Customer Relations Zone Office.
Refer to the U.S. and Canadian Zone Office maps on the following pages.
When you call or write, please give

us this information:

Vehicle Identification Number
(see page 324)
Name and address of the dealer
who services your car Date of purchase
Mileage on your car
Your name, address, and tele- phone number
A detailed description of the problemName of the dealer who sold the
car to you

Warranty and Customer Relations

U.S. Zone
Office Map

The addresses and telephone numbers are subject to change. If you cannot

reach your Zone office, ask your Honda dealer for the current information.
Western Zone

P.O. Box 2260

700 Van Ness Avenue

Torrance, California
90501- 1490
(310) 781-4565

Northwestern Zone

P.O. Box 20186
12439 N.E. Airport Way
Portland, Oregon 97230

(503) 256-0943
(also includes Alaska and
Hawaii)
South Centra! Zone
4529 Royal Lane

Irving, Texas 75063

(972) 929-5481

Centra! Zone101 South Stanfield Road
Troy, Ohio 45373
(937) 332-6250

Northeastern Zone
115 Gaither Drive
Mt. Laurel, New Jersey 08054

(856) 235-5533

Includes: NYC Metro area and
Fairfield County, CT area
Mid-Atlantic Zone

902 Wind River Ln., Suite 200
Gaithersburg, Maryland 20878
(301) 990-2020
Southeastern Zone
P.O.
Box
1606

1500 Morrison Parkway
Alpharetta, Georgia 30009-1606
(770) 442-2045

North Central Zone
601 Campus Drive, Suite A-9
Arlington Heights, Illinois 60004
(847) 870-5600

New England Zone
555 Old County Road
Windsor Locks, Connecticut 06096 (860) 623-3310
See Zone 5 for: NYC Metro area and
Fairfield County, CT area
West Central Zone1600 South Abilene Street, Suite D
Aurora, Colorado 80012
(303) 696-3935

Puerto Rico and U.S. V.I.
Bella International

P.O. Box 190816

San Juan, PR 00919-0816 (787)250-4318
Warranty and Customer Relations