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EnglishTechnical Information -> Emission Control Systems for your Honda CR-V 1995-2000
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Emissions Controls
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 from 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 form photochemical "smog."
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas.
The Clean Air Act
Crankcase Emissions Control
System
Your vehicle has a Positive
The United States Clean Air Act*
sets standards for automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
work and what to do to maintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page
188.
Crankcase Ventilation System. This
keeps gasses that build up in the
engine's crankcase from going into
the atmosphere. The Positive Crank-
case Ventilation valve routes them
from the crankcase back to the
intake manifold. They are then
drawn into the engine and burned.
* In Canada, Honda vehicles comply
with the Canadian Motor Vehicle
Safety Standards (CMVSS) for
Emissions valid at the time they are
manufactured.
Evaporative Emissions Control
System
As gasoline evaporates in the fuel
tank, an evaporative emissions
control canister filled with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is off. After
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
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Emissions Controls
Replacement Parts
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 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.
PGM-FI System
The PGM-FI System uses sequential
multiport fuel injection.
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
Genuine Honda replacement parts or
their equivalent for repairs. Using
lower quality parts may increase the
emissions from your vehicle.
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.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.
Ignition Timing Control System
This system constantly adjusts the
ignition timing, reducing the amount
of 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
(N ), and water vapor.
2
), dinitrogen
2
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Three Way Catalytic Converter
Keep the engine tuned-up.
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.
Have your vehicle diagnosed and
repaired if it is misfiring, back-
firing, stalling, or otherwise not
running properly.
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.
THREE WAY CATALYTIC CONVERTER
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.
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Warranty and Customer Relations
Customer Relations
U.S. Zone Office Map................... 289
Warranty Coverages.................... 291
Reporting Safely Defects
(U.S. Vehicles).......................... 292
Authorized Manuals..................... 293
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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 your
satisfaction, please discuss it with
the dealership's management. The
Service Manager or General
If you are dissatisfied with the
When you call or write, please give
us this information:
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.
Vehicle Identification Number
(see page 276)
Name and address of the dealer
who services your vehicle
Date of purchase
Mileage on your vehicle
Your name, address, and tele-
phone number
Manager can help. Almost all
problems are solved in this way.
A detailed description of the
problem
Name of the dealer who sold the
vehicle to you
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U.S. Zone Office Map
Mid-Atlantic Zone
902 Wind River Ln., Suite 200
Gaithersburg, Maryland 20878
(301) 990-2020
Western Zone
P.O. Box 2260
700 Van Ness Avenue
Torrance, California
90509-2260
(310) 781-4565
Southeastern Zone
1500 Morrison Parkway
Alpharetta, Georgia 30004
(770) 442-2045
Northwestern Zone
P.O. Box 20186
12439 N.E. Airport Way
Portland, Oregon 97230
(503) 256-0943
North Central Zone
601 Campus Drive, Suite A-9
Arlington Heights, Illinois 60004
(847) 870-5600
(also includes Alaska and
Hawaii)
South Central Zone
4529 Royal Lane
New England Zone
555 Old County Road
Windsor Locks, Connecticut 06096
(860) 623-3310
Irving, Texas 75063
(972) 929-5481
See Zone 5 for:
Central Zone
101 South Stanfield Road
Troy, Ohio 45373
(937) 332-6250
NYC Metro area and
Fairfield County, CT area
West Central Zone
1600 South Abilene Street, Suite D
Aurora, Colorado 80012
(303) 696-3935
Northeastern Zone
P.O. Box 337
Eastgate Industrial Park
115 Gaither Drive
Puerto Rico and U.S. V.I.
Bella International
Moorestown, New Jersey 08057
(609) 235-5533
The addresses and telephone num bers are subject to change. If you cannot
reach your Zone office, ask your Honda dealer for the current inform ation.
P.O. Box 190816
San Juan, PR 00919-0816
(787) 250-4318
Includes: NYC Metro area and
Fairfield County, CT area
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Warranty Coverages
U.S. Owners
Your new Honda is covered by these
warranties:
Scat Kelt Limited Warranty — a seat
belt that fails to function properly is
covered for the useful life of the
vehicle.
Replacement Battery Limited
Warranty — provides prorated
coverage for a replacement battery
purchased from a Honda dealer.
New Vehicle Limited Warranty —
covers your new vehicle, except for
the battery, emissions control
systems and accessories, against
defects in materials and
Rust Perforation Limited Warranty
— all exterior body panels are
covered for rust-through from the
inside for the specified time period
with no mileage limit.
Replacement Muffler Lifetime
Limited Warranty — provides
coverage for as long as the pur-
chaser of the muffler owns the
vehicle.
workmanship.
Emissions Control Systems Defects
Warranty and Emissions
Accessory Limited Warranty —
Genuine 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.
Restrictions and exclusions apply to
all these warranties. Please read the
2000 Honda Warranty Information
booklet that came with your car for
precise information on warranty
coverages. Your Honda's original
tires are covered by their
Performance Warranty — these two
warranties cover your vehicle's emis-
sions control systems. Time, mileage,
and coverage are conditional. Please
read the warranty manual for exact
information.
manufacturer. Tire warranty infor-
mation is in a separate booklet.
Replacement Parts Limited
Warranty — covers all Genuine
Honda replacement parts against
defects in materials and workman-
ship.
Original Equipment Battery Limited
Warranty — this warranty gives up
to 100 percent credit toward a
replacement battery.
Canadian Owners
Please refer to the 2000 Warranty
Manual that came with your vehicle.
Warranty and Customer Relations
