2005 HONDA CIVIC HATCHBACK sensor

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 ).
Your Airbag System includes:
Emergency backup power in case
your vehicle’s electrical system is
disconnected in a crash.an
indicator on the dashboard that
alerts you that the passenger’s
side airbag has been turned of f
(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 of f (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.
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, 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.
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In models with side airbags,A irbag System Components
Additional Inf ormation About Your Airbags
Driver and Passenger Saf ety
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Af ter inf lating, the f ront airbags will
immediately def late, so they won’t
interf ere with the driver’s visibility,
or the ability to steer or operate
other controls.
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.
Although both airbags normally
inf late within a split second of each
other, it is possible f or only one
airbag to deploy.
During a f rontal crash, your seat belt
restrains your lower body and torso,
and the airbag helps protect your
head and chest.
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 f ront
airbags, at the time and with the
f orce needed.
Additional Inf ormation About Your Airbags
How Your Front Airbags Work 24
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(On models equipped)
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.
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 thereis no passenger.
Objects placed on the f ront
passenger seat can also cause the
side airbag to be shut of f .
Thesideairbagmayalsoshutoff if a
short adult leans sideways, or a
larger adult slouches and leans
sideways into the airbag’s
deployment path.
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.
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.
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.
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.
There will be some delay between
the moment the passenger moves
into or out of the airbag deployment
pathandwhentheindicatorcomes
on or goes of f . 27
How Your Side A irbags Work
Additional Inf ormation About Your Airbags
Side A irbag Cut of f Syst em
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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 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
engine control module (ECM) 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 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
quality parts may increase the
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.
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 Cont rols
Exhaust Emissions Controls Replacement PartsPGM-FI Syst em
Ignit ion T iming Cont rol Syst emThree Way Catalytic Converter
T echnical Inf ormation
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