2005 HONDA CIVIC sensor

Your airbag system includes:Two SRS (Supplemental Restraint
System) f ront airbags. The driver’s
airbag is stored in the center of
the steering wheel; the f ront
passenger’sairbagisstoredinthe
dashboard. Both are marked ‘‘SRS
AIRBAG.’’
Automatic seat belt tensioners
(see page ).
In models with side airbags, one
for the driver and one for a front
passenger. The airbags are stored
in the outer edges of the seat-
backs. Both are marked ‘‘SIDE
AIRBAG’’ (see page ).
Sensors that can detect a
moderate to severe front impact,
or side impact in models with side
airbags. an
indicator on the dashboard that
alerts you that the passenger’s
side airbag has been turned of f
(see page ).
Emergency backup power in case
your vehicle’s electrical system is
disconnected in a crash.
An indicator on the instrument
panel that alerts you to a possible
problem with your airbags,
sensors, or seat belt tensioners
(see page ).
In models with side airbags,
sensors that can detect whether
a child is in the passenger’s side
airbag path and automatically
turn the airbag off (see page
).
A sophisticated electronic system
that continually monitors and
records inf ormation about the
sensors, the control unit, the
airbag activators, the seat belt
tensioners, and driver and f ront
passenger seat belt use when the
ignition is in the ON (II) position.
21 26
27 28
26
In models with side airbags,A irbag System Components
Additional Inf ormation About Your Airbags
Driver and Passenger Saf ety
23
——y


y
(yy

Af ter inf lating, the f ront airbags
immediately def late, so they won’t
interf ere with the driver’s visibility,
or the ability to steer or operate
other controls.
During a f rontal crash, your seat belt
restrains your lower body and torso,
and the airbag helps protect your
head and chest.
Although both airbags normally
inf late within a split second of each
other, it is possible f or only one
airbag to deploy.
This can happen if 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
suf f icient protection, and the
supplemental protection of f ered by
the airbag would be minimal.
If you ever have a moderate to
severe f rontal collision, sensors will
detect the vehicle’s rapid
deceleration.
If the rate of deceleration is high
enough, the control unit will instantly
inf late the driver’s and f ront
passenger’s airbags, at the time and
with the f orce needed.
Additional Inf ormation About Your Airbags
How Your Front Airbags Work
24
——y

y
(yy

Only one airbag will deploy during a
side impact. If the impact is on the
passenger’s side, the passenger’s
side airbag will deploy even if there
is no passenger.To get the best protection f rom the
side airbags, front seat occupants
should wear their seat belts and sit
upright and well back in their seats.
To reduce the risk of injury f rom an
inf lating side airbag, your vehicle has
an automatic cutoff system for the
passenger’s side airbag.
Although Honda does not encourage
children to ride in f ront, this system
is designed to shut of f the side
airbag if a child leans into the side
airbag’s path.
Thesideairbagmayalsoshutoff if a
short adult leans sideways, or a
larger adult slouches and leans
sideways into the airbag’s
deployment path.
Objects placed on the f ront
passenger seat can also cause the
side airbag to be shut of f .If the Side Airbag Of f Indicator
comes on (see page ), have the
passenger sit upright. Once the
passenger is out of the airbag’s
deployment path, the system will
turn the airbag back on, and the
indicator will go out.
There will be some delay between
the moment the passenger moves
into or out of the airbag deployment
pathandwhentheindicatorcomes
on or goes of f .
A f ront seat passenger should not
use a cushion or other object as a
backrest. It may prevent the cutof f
system f rom working properly.
If you ever have a moderate to
severe side impact, sensors will
detect rapid deceleration and signal
the control unit to instantly inf late
either the driver’s or the passenger’s
side airbag. 28
On models equipped
How Your Side A irbags Work
Additional Inf ormation About Your Airbags
Side A irbag Cut of f Syst em
26
——y

y
(yy

If you are planning to take your
Honda outside the U.S. or Canada,
contact the tourist bureaus in the
areas you will be traveling in to f ind
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 af f ect perf or-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. and
Canadian 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.
Driving in Foreign Countries
214
——y

y
(y
y

The exhaust emissions controls
include three or f our systems: PGM-
FI, ignition timing control, exhaust
gas recirculation (SOHC VTEC
engine only), 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
comes out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
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 howmuch air is going into the engine. It
then 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.
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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst em
Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
216
——y

y
(y
y