Honda Civic Si Coupe (2004 year). Manual — part 13

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.

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) uses
various sensors to determine how
much air is going into the engine. It
then controls how much fuel to inject
under all operating conditions.

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 new
Honda replacement parts or their
equivalent for repairs. Using lower
quality parts may increase the
emissions from your vehicle.

The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.

This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.

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.

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Emissions Controls

Exhaust Emissions Controls

Replacement Parts

PGM-FI System

Ignition Timing Control System

Three Way Catalytic Converter

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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 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 vehicle away from high
grass, dry leaves, or other flamma-
bles.

A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
formance. 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 ineffective.

Keep the engine tuned-up.

Have your vehicle diagnosed and
repaired if it is misfiring, back-
firing, stalling, or otherwise not
running properly.

Three Way Catalytic Converter

198

THREE WAY CATALYTIC CONVERTER

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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 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 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 retesting 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 Neutral.
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 (about 3 minutes).

State Emissions Testing

Testing of Readiness Codes

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Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph
(80 to 97 km/h) for at least 20
minutes. Drive on the highway in
5th. 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 several
seconds without using the
accelerator pedal or the brake
pedal.

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

State Emissions Testing

200

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Customer Service

. . . . . . . .

Information

.

202

. . . . .

Warranty Coverages

.

203

Reporting Safety Defects

. . . . . . ..

(U.S. Vehicles)

.

204

. . . . . .

Authorized Manuals

.

205

Warranty and Customer Relations

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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 your
satisfaction, 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 Office.

U.S. Owners:

Canadian Owners:

When you call or write, please give
us this information:

In Puerto Rico and the U.S. Virgin
Islands:

Vehicle Identification 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

190

Customer Service Information

202

CUSTOMER RELATIONS
RELATIONS AVEC LA CLIENTÉLE
Honda 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

American Honda Motor Co., Inc.
Automobile Customer Service
Mail Stop 500-2N-7A
1919 Torrance Boulevard
Torrance, California 90501-2746

Tel: (800) 999-1009

Bella International
P.O. Box 190816
San Juan, PR 00919-0816

Tel: (787) 250-4327

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Your new vehicle is covered by these
warranties:

covers your new vehicle, except for
the battery, emissions control
systems, and accessories, against
defects in materials and
workmanship.

these two

warranties cover your vehicle’s
emissions control systems. Time,
mileage, and coverage are
conditional. Please read your
warranty manual for exact
information.

a seat

belt that fails to function properly is
covered for the useful life of the
vehicle.

all exterior body panels are

covered for rust-through from the
inside for the specified time period
with no mileage limit.

Honda Accessories are covered
under this warranty. Time and
mileage limits depend on the type of
accessory and other factors. Please
read your warranty manual for
details.

covers all Honda

replacement parts against defects in
materials and workmanship.

provides prorated

coverage for a replacement battery
purchased from your dealer.

provides

coverage for as long as the pur-
chaser of the muffler owns the
vehicle.

Restrictions and exclusions apply to
all these warranties. Please read the
2005 Honda Warranty Information
booklet that came with your vehicle
for precise information on warranty
coverages. Your vehicle’s original
tires are covered by their
manufacturer. Tire warranty infor-
mation is in a separate booklet.

Please refer to the 2005 Warranty
Manual that came with your vehicle.

this warranty gives up

to 100 percent credit toward a
replacement battery.

Warranty Coverages

U.S. Owners

Canadian Owners

New Vehicle Limited Warranty

Emissions Control Systems Def ects
Warranty and Emissions
Perf ormance Warranty

Seat Belt Limited Warranty

Rust Perf oration Limited Warranty

Accessory Limited Warranty

Replacement Parts Limited
Warranty

Replacement Battery Limited
Warranty

Replacement Muf f ler Lif etime
Limited Warranty

Original Equipment Battery Limited
Warranty

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If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform the
National Highway Traffic Safety
Administration (NHTSA) in addition
to notifying American Honda Motor
Co., Inc.

If NHTSA receives similar com-
plaints, it may open an investigation,
and if it finds that a safety defect
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.

To contact NHTSA, you may either
call the Auto Safety Hotline toll-free
at 1-800-424-9393 (or 366-0123 in
Washington D.C. area) or write to:
NHTSA, U.S. Department of
Transportation, Washington,
D.C. 20590. You can also obtain
other information about motor
vehicle safety from the Hotline.

Reporting Safety Defects (U.S. Vehicles)

204

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The publications shown below can be purchased from Helm
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If you are interested in other years or models, contact Helm Inc.
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Valid only for sales within the United States. Canadian
owners should contact their authorized Honda dealer.

Authorized Manuals

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(U.S. only)

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Form Description

2002-05 Honda Civic 3 Door

Service Manual

2002-05 Honda Civic 3 Door

Electrical Troubleshooting Manual

2002-05 Honda Civic 3 Door

Body Repair Manual

2005 Honda Civic 3 Door

Owner’s Manual

2005 Honda Civic

Honda Service History

2005 Honda Civic 3 Door

Quick Start Guide

Order Form for Previous Years-

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Prices are subject to change without notice and without incurring obligation.

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This manual covers maintenance and recommended
procedures for repair to engine and chassis components.
It is written for the journeyman mechanic, but is simple
enough for most mechanically-inclined owners to under-
stand.

This manual describes the procedures involved in the
replacement of damaged body parts.

This manual complements the service manual by
providing in-depth troubleshooting information for each
electrical circuit in your vehicle.

Authorized Manuals

Service Manual:

Electrical Troubleshooting Manual:

Body Repair Manual:

206

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