Page 417 of 436

The PGM-FI system uses sequential
multiport f uel injection. It has three
subsystems: air intake, engine
control, and f uel control. The
powertrain control module (PCM) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles uses
various sensors to determine how
much air is going into the engine. Itthen controls how much f uel to inject
under all operating conditions. 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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The exhaust emissions controls
includethreeorfoursystems:
PGM-FI, ignition timing control,
exhaust gas recirculation (V6
models), and three way catalytic
converter. These three or f our
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
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.
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.
2
2
V6 models
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emExhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Three Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation
395
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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.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 well maintained.
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
combustible materials that come
near it. Park your vehicle away from
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 vehicle’s three way
catalytic converter.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
396
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTERS
2.4
engine models V6 models
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Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).Without touching the accelerator
pedal, start the engine, and let it
idle f or 20 seconds.
If you take your vehicle f or an
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 retested within the
next two or three days, you can
condition the vehicle f or retesting by
doing the f ollowing.
Make sure the vehicle has been
parked with the engine of f f or 6
hours or more.
Make sure the ambient
temperature is between 40° and
95°F (4° and 35°C). Keep the vehicle in Park
(automatic) or neutral (manual).
Increase the engine speed to 2,000
rpm,andholditthereuntilthe
temperature gauge rises to at least
1/4of thescale(about3minutes).
Without touching the accelerator
pedal, let the engine idle f or 20
seconds.
1. 2.3. 4.5. 6.
CONT INUED
T esting of Readiness Codes
Emissions T est ing
T echnical Inf ormation
397
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Page 420 of 436
Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph
(80to97km/h)foratleast20
minutes. Drive on the highway in
D (automatic) or 5th (manual). Do
notusethecruisecontrol.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 f or a continuous 90
seconds because of traf f ic
conditions, drive f or at least 30
seconds, then repeat it two more
times (for a total of 90 seconds).If the testing f acility determines the
readiness codes are still not set, see
your dealer.Then drive in city/suburban
traffic for at least 10 minutes.
When traf f ic conditions allow, let
the vehicle coast f or several
seconds without using the
accelerator pedal or the brake
pedal.
Make sure the vehicle has been
parked with the engine of f f or 30
minutes.
7.
8. 9.
Emissions T est ing
398
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Page 421 of 436

Honda dealership personnel are
trained prof essionals. They should
be able to answer all your questions.
If you encounter a problem that your
dealership does not solve to your
satisf action, 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 dissatisf ied with the
decision made by the dealership’s
management, contact Honda
Customer Service.
U.S. Owners:Canadian Owners: When you call or write, please give
us this inf ormation:
Vehicle Identif ication Number
(see page )
Name and address of the dealer
who services your vehicle
Date of purchase
Mileage on your vehicle
Your name, address, and tele-
phone number
A detailed description of the
problem
Name of the dealer who sold the
vehicle to you
In Puerto Rico and the U.S. Virgin
Islands:
382
Cust omer Service Inf ormat ion
400
American Honda Motor Co., Inc.
Automobile Customer Service
Mail Stop 500-2N-7A
1919 Torrance Boulevard
Torrance, California 90501-2746
Tel: (800) 999-1009Honda Canada Inc.
715 Milner Avenue
Toronto, ON
M1B 2K8
Tel: 1-888-9-HONDA-9
Fax: Toll-free 1-877-939-0909
Toronto (416) 287-4776
Vortex Motor Corp.
Bella International
P.O. Box 190816
San Juan, PR 00919-0816
Tel: (787) 620-7546
Customer Relations
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Page 422 of 436

µµ
µ µ
µ
µ µ
µ
µ
Your new vehicle is covered by these
warranties:
covers your new vehicle, except f or
the battery, emissions control
systems, and accessories, against
def ects in materials and
workmanship.
provides prorated
coverage f or a replacement battery
purchased f rom your dealer.
these two
warranties cover your vehicle’s
emissions control systems. Time,
mileage, and coverage are
conditional. Please read your
warranty booklet f or exact
inf ormation. provides
coverageforaslongasthepur-
chaser of the muf f ler owns the
vehicle.
a seat
belt that f ails to f unction properly is
covered by a limited warranty.
Please read your warranty booklet
f or details.
covers all Honda
replacement parts against defects in
materials and workmanship.
Honda accessories are covered
under this warranty. Time and
mileage limits depend on the type of
accessory and other f actors. Please
read your warranty booklet f or
details. all exterior body panels are
covered f or rust-through f rom the
inside f or the specif ied time period
with no mileage limit.
this warranty gives up
to 100% credit toward a replacement
battery. Restrictions and exclusions apply to
all these warranties. Please read the
2009 Honda warranty inf ormation
booklet that came with your vehicle
f or precise inf ormation on warranty
coverages. Your vehicle’s original
tires are covered by their
manuf acturer. Tire warranty
inf ormation is in a separate booklet.
Please ref er to the 2009 warranty
manual that came with your vehicle.
Warranty Coverages
U.S. Owners
Canadian Owners
New Vehicle L imit ed Warrant y Replacement Bat t ery L imit ed
Warranty
Emissions Cont rol Syst ems Def ect s Warrant y and Emissions
Perf ormance Warranty Replacement Muf f ler L if et ime
Limited Warranty
Seat Belt Limited Warranty
Replacement Part s L imit edWarranty
Accessory Limited Warranty
Rust Perf orat ion L imit ed Warrant y
Original Equipment Bat t ery L imit ed WarrantyWarrant y and Cust omer Relat ions
401
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Page 423 of 436
If NHTSA receives similar com-
plaints, it may open an investigation,
and if it f inds that a saf ety def ect
exists in a group of vehicles, it may
order a recall and remedy campaign.
However, NHTSA cannot become
involved in individual problems
between you, your dealer, or
American Honda Motor Co., Inc.
If you believe that your vehicle has a
def ect which could cause a crash or
could cause injury or death, you
should immediately inf orm the
National Highway Traf f ic Saf ety
Administration (NHTSA), in addition
to notifying American Honda Motor
Co., Inc.
To contact NHTSA, you may call the
VehicleSafetyHotlinetoll-freeat1-888-327-4236
(TTY: 1-800-424-9153); go to
; or write to:
Administrator, NHTSA, 1200 New
Jersey Avenue, SE., Washington, DC20590.
You can also obtain other
inf ormation about motor vehicle
safety from .
Reporting Saf ety Def ects (U.S. Vehicles)
402
http://www.saf ercar.gov
http://www.saf ercar.gov
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Page 424 of 436

T he publications shown below can be purchased f rom Helm
Incorporated. You can order by phone or online:Call Helm Inc. at 1-800-782-4356 (credit card orders only)
Go online at
If you are interested in other years or models, contact Helm Inc.
at 1-800-782-4356.Covers maintenance and recommended procedures f or
repair to engine and chassis components. It is written
f or the journeyman mechanic, but it is simple enough
f or most mechanically inclined owners to understand.
Complements the Service Manual by providing in-depth
troubleshooting inf ormation f or each electrical circuit
in your vehicle.
Describes the procedures involved in the replacement
of damaged body parts.
Authorized Manuals
Purchasing Factory Authorized Manuals Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
(U.S. only)
Authorized Manuals
403
Publication
Form Number 61TA002 61TA003
61TA002EL
61TA030
31TA5610 31TA5810
31TA5M10 31TA5Q10 HON-R Form Description
2008-2009 Honda Accord 2/4 door L4 Service Manual Base Book
2008-2009 Honda Accord 2/4 door V6
Service Manual Supplement2009 Honda 2/4 Door L4/V6
Electrical Troubleshooting Manual
2008 Honda 2/4 door Body Repair Manual
2009 Honda Accord 4-door Owner’s Manual 2009 Honda Accord
Navigation System Owner’s Manual
2009 Honda Accord Honda Service History
2009 Honda Accord 4-door Quick Start Guide
Order Form for Previous Years-
Indicate Year and Model Desired
www. helminc. com
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