2004 HONDA CIVIC HYBRID 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.’’ A sophisticated electronic system
that continually monitors and
records inf ormation about the
sensors, the control unit, the
airbag activators, and driver and
frontpassengerseatbeltusewhen
the ignition is in the ON (II)
position.
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.
Sensors that can detect a
moderate to severe frontal impact
or side impact in models equipped
with side airbags. Automatic seat belt tensioners
(see page ). one f or the driver and one f or a
f ront passenger. The airbags are
stored in the outer edges of the
seat-backs. Both are marked
‘‘SIDE AIRBAG’’ (see page ).
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 ). An indicator on the instrument
panel that alerts you to a possible
problem with your airbags (see
page ).
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On models equipped with side airbags, On models equipped with side airbags,
Additional Inf ormation About Your Airbags
Driver and Passenger Saf ety
Airbag System Components How Your Front Airbags Work
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(On models equipped)
If you ever have a moderate to
severe side impact, the 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 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.
The passenger’s side airbag has a
cutof f system designed to turn of f
the passenger’s f ront airbag if a
child’s head is in the airbag’s
deployment path (see page ).
If the side airbag of f indicator comes
on, have the passenger sit upright.
Once the passenger is out of the
deployment path of the side airbag,
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.
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Additional Inf ormation About Your Airbags
Driver and Passenger Saf ety
How Your Side A irbags Work
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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 from
the rest of your vehicle. Read your
warranty manual f or more informa-
tion.
The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas 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 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 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
f uel to inject under all operating con-
ditions. This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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.
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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Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation209