2010 HONDA ACCORD SEDAN Owner's Manual (in English)

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The burning of gasoline in your
vehicle’s engine produces several by-
products. Some of these are carbon
monoxide (CO), oxides of nitrogen
(NOx), and hydrocarbons (HC).
Gasoline evaporating f rom the tank
also produces hydrocarbons. Con-
trolling the production of NOx, CO,
and HC is important to the environ-
ment. Under certain conditions of
sunlight and climate, NOx and HC
react to f orm photochemical ‘‘smog.’’
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas.
The United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
In Canada, Honda vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
Your vehicle has a positive
crankcase ventilation system. This
keeps gasses that build up in the
engine’s crankcase f rom going into
the atmosphere. The positive
crankcase ventilation valve routes
them from the crankcase back to the
intake manif old. They are then
drawn into the engine and burned.
As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
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 Clean Air Act
Crankcase Emissions Control
System
Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
390
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The exhaust emissions controls
includethreeorfoursystems:
PGM-FI, ignition timing control,
exhaust gas recirculation (6-cylinder
models), and three way catalytic
converter. These 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 emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
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
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
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 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. It
then controls how much f uel to inject
under all operating conditions.
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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
V6 models
Exhaust Emissions Controls
Replacement Parts
Emissions Cont rols
Three Way Catalytic Converter
PGM-FI System
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Technical Inf ormation
391
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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
392
THREE WAY CATALYTIC CONVERTERTHREE WAY CATALYTIC CONVERTERS
V6 models4-cylinder 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 esting
Technical Inf ormation
393
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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 esting
394
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....Customer Service Inf ormation .396
....................Warranty Coverages.397
Reporting Saf ety Def ects
............................(U.S. Vehicle).398
.....................Authorized Manuals.399
Warranty and Customer Relations
Warrant y and Cust omer Relat ions
395
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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
Odometer reading of 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:
378
Customer Service Inf ormation
396
American Honda Motor Co., Inc.
Automobile Customer Service
Mail Stop 500-2N-7A
1919 Torrance Boulevard
Torrance, California 90501-2746
Tel: (800) 999-1009
Honda Canada Inc.
Visit www.honda.ca for contact
information
Tel: 1-888-9-HONDA-9
Fax: 1-877-939-0909
Vortex Motor Corp.
Bella International
P.O. Box 190816
San Juan, PR 00919-0816
Tel: (787) 620-7546
Customer Relations
09/07/08 21:46:26 31TA5620_401
2010 Accord Sedan

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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
2010 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 2010 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 ed
Warranty
Accessory Limited Warranty
Rust Perf orat ion L imit ed Warrant y
Original Equipment Bat t ery L imit ed
Warranty
Warrant y and Cust omer Relat ions
397
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