sensor HONDA PRELUDE 1998 Owners Manual

Additional Information About Your SRS
SRS Components

Your Supplemental Restraint System (SRS) includes:
Two frontal airbags. The driver'sairbag is stored in the center of
the steering wheel; the front
passenger's airbag is stored in the dashboard. Both are marked

"SRS".
Sensors that can detect a severe

frontal collision. A sophisticated electronic system
that continually monitors thesensors, control unit, the airbag
activators, and all related wiring
when the ignition is ON (II). An indicator light on the
instrument panel to alert you to a
possible problem with the system (see page 45). Emergency backup power in case
your vehicle's electrical system is disconnected in a crash. How Your Airbags Work
If you ever have a severe frontal
collision, the sensors will detect
rapid deceleration and signal the
control unit to instantly inflate the
airbags.
During a crash, your seat belt helps
restrain your lower body and torso.
Your airbag provides a cushion to help restrain and protect your headand chest.

Driver and Passenger Safety
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Additional Information About Your SRS

Since both airbags use the same
sensors, both airbags normally
inflate at the same time. However, it
is possible for only one airbag to inflate.
This can occur when the severity of a collision is at the margin, or
threshold, that determines whether or not the airbags will deploy. In
such cases, the seat belt will provide
sufficient protection, and the
supplemental protection offered by
the airbag would be minimal.
After inflating, the airbagsimmediately deflate, so they won't
interfere with the driver's visibility,
or the ability to steer or operate
other controls.
The total time for inflation and deflation is approximately one-tenth
of a second, so fast that most
occupants are not aware that the
airbags deployed until they see them
lying in their laps. After a crash, you may see what
looks like smoke. This is actually
powder from the airbag's surface.
Although the powder is not harmful, people with respiratory problems
may experience some temporarydiscomfort. If this occurs, get out of
the car as soon as it is safe to do so.
U.S. Owners
For additional information on how
your airbags work, see the booklet
titled SRS: What You Need to Know

About Airbags that came with your
owner's manual.

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Interior Care, Corrosion Protection

Air Fresheners If you want to use an air freshener/
deodorizer in the interior of your
vehicle, it is best to use a solid type. Some liquid air fresheners contain
chemicals that may cause parts of
the interior trim and fabric to crack or discolor.
If you use a liquid air freshener,
make sure you fasten it securely so it does not spill as you drive. Corrosion Protection
Two factors normally contribute to causing corrosion in your vehicle:
1. Moisture trapped in body cavities. Dirt and road salt that collects in
hollows on the underside of the
vehicle stays damp, promoting corrosion in that area.
2. Removal of paint and protective coatings from the exterior and
underside of the vehicle.
Many corrosion-preventive measures
are built into your Honda. You can
help keep your vehicle from corroding by performing somesimple periodic maintenance: Repair chips and scratches in the
paint as soon as you discover them.Inspect and clean out the drain
holes in the bottom of the doors and body.
Check the floor coverings for
dampness. Carpeting and floor
mats may remain damp for a long
time, especially in winter. This dampness can eventually cause
the floor panels to corrode.
Use a high-pressure spray to clean
the underside of your vehicle. This is especially important in areas
that use road salt in winter. It isalso a good idea in humid climates
and areas subject to salt air. Be
careful of the ABS wheel sensors
and wiring at each wheel.
Have the corrosion-preventive
coatings on the underside of your
vehicle inspected and repaired periodically.
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Driving in Foreign Countries

If you are planning to take your
Honda outside the U.S. or Canada,
contact the tourist bureaus in theareas you will be traveling in to find
out about the availability of unleaded
gasoline with the proper octane

rating.

If unleaded gasoline is not available,
be aware that using leaded gasoline in your Honda will affect perfor-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. andCanadian emissions regulations, and
will be illegal to operate in North
America. To bring your vehicle back into compliance will require the re-
placement of several components, such as the oxygen sensors and the
three way catalytic converter. These replacements are not covered under
warranty.

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Emissions Controls

Exhaust Emissions Controls
The exhaust emissions controls include four systems: PGM-FI,
Ignition Timing Control, ExhaustGas Recirculation and Three Way
Catalytic Converter. These four
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.
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. Ignition Timing Control System
This system constantly adjusts the ignition timing, reducing the amount
of HC, CO and NOx produced.
Exhaust Gas Recirculation (EGR)
System

The Exhaust Gas Recirculation (EGR) system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding exhaust
gas to the air/fuel mixture reduces the amount of NOx produced when
the fuel is burned.
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 (C02), 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 vehicle.
The emissions control systems are covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more informa-
tion.

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