1997 TOYOTA CELICA sensor

29
This indicator comes on when the
ignition key is turned to the ACCº or
ONº position. It goes off after about 6
seconds. This means the SRS airbags
are operating properly.
The SRS airbag warning light system
monitors the front airbag sensors, center
airbag sensor assembly, inflators, warn-
ing light, interconnecting wiring and power
sources.The SRS airbag system is designed to
activate in response to a severe frontal
impact within the shaded area be-
tween the arrows in the illustration.
The SRS airbags will deploy if the severity
of the impact is above the designed
threshold level, comparable to an approxi-
mate 20 km/h (14 mph) collision when im-
pacting straight into a fixed barrier that
does not move or deform.
If the severity of the impact is below the
above threshold level, the SRS airbags
may not deploy. However, this threshold velocity will be
considerably higher if the vehicle strikes
an object, such as a parked vehicle or sign
pole, which can move or deform on im-
pact, or if it is
involved in an underride col-
lision (e.g. a collision in which the nose of
the vehicle underridesº, or goes under,
the bed of a truck.
It is possible with collision severity at the
marginal level of airbag sensor detection
and activation that only one of your ve-
hicle's two airbags will deploy.
For the safety of all occupants, be sure to
always wear seat belts.
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The SRS airbags are not designed to
inflate if the vehicle is subjected to a
side or rear impact, if it rolls over, or if
it is involved in a low-speed frontal
collision.The SRS airbag system mainly consists
of the following components and their
locations are shown in the illustration.
1 Front airbag sensors
2 Center airbag sensor assembly.
3 Steering wheel pad (airbag and inflat-or)
4 Passenger airbag module (airbag and inflator)
5 SRS airbag warning light
The center airbag sensor assembly con-
sists of a safing sensor and center airbag
sensor. In a severe frontal impact, sensors detect
deceleration and the system triggers the
airbag inflators. Then a chemical reaction
in the inflators momentarily fills the air-
bags with non-toxic nitrogen gas to help
restrain the forward motion of the occu-
pants.
When the airbags inflate, they produce a
fairly
loud noise and release some smoke
along with the nitrogen gas. This is not
harmful and does not indicate a fire. Be
sure to wash off any residue as soon as
possible to prevent minor skin irritation.
Deployment of the airbags happen in a
fraction of a second, so the airbags must
inflate with considerable force. While the
system is designed to reduce serious inju-
ries, it may also cause minor burns or
abrasions and swellings.
Parts of the airbag module (steering
wheel hub, dashboard) may be hot for
several minutes, but the airbags them-
selves w ill not be hot. The airbags are de-
signed to inflate only once.
A crash severe enough to inflate the air-
bags may break the windshield as the ve-
hicle buckles. In vehicles with a passen-
ger airbag the windshield may also be
damaged by absorbing some of the force
of the inflating airbag.
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32

Do not sit on the edge of the seat
or lean over the dashboard when
the vehicle is in use. The airbags
inflate with considerable speed
and force; you may be severely
injured. Sit up straight and well
back in the seat, and always use
your seat belts.
Do not allow a child to stand up,
or to kneel on the front passenger
seat. The airbag inflates with con-
siderable speed and force; the
child may be severely injured.

Do not hold a child on your lap or
in your arms. Use a child restraint
system in the rear seat. For in-
structions concerning the instal-
lation of a child restraint system,
see Child restraintº in this chap-
ter.
Do not put objects on or in front of
the dashboard or steering wheel
pad that houses the airbag system.
They might restrict inflation or
cause personal injury as they are
projected rearward.

Do not modify, remove or open any
components or wiring, such as the
steering wheel, column cover, front
passenger airbag cover, front pas-
senger airbag, center airbag sensor
assembly or front airbag sensors.
Doing any of these may cause sud -
den SRS airbag inflation or disable
the system, which could result in
personal injury.
Failure to follow these instructions
can result in severe injuries.
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63
(e) Malfunction indicator lamp
This lamp comes on in the following
cases.
a. The fuel tank is completely empty.
(See Fuel gaugeº in Chapter 1-5 for in-
structions.)
b. There is a problem somewhere in
your engine or automatic transmission
electrical system.
If it comes on while you are driving in case
b, have your vehicle checked/repaired by
your Toyota dealer as soon as possible.
(f) Low Fuel Level Warning Light
This light comes on when the fuel level in
the tank becomes nearly empty. Fill up the
tank as soon as possible.
(g) ABSº Warning Light
This light warns that there is a problem
somewhere in your anti-lock brake sys-
tem.
If the light comes on while you are driving,
have your vehicle checked by your Toyota
dealer as soon as possible.
The light will come on when the ignition
key is turned to the ONº position. After
about 3 seconds, the light will go off. When the ABSº warning light is on (and
the brake system warning light is off), the
brake system
operates conventionally but
anti-lock brake system is not assisting
brake performance so that the wheels can
lock-up during sudden braking or braking
on slippery road surfaces.
(h) Open Door Warning Light
This light remains on until all the doors
and back door are completely closed.
(i) SRS Airbag Warning Light
This light will come on when the igni-
tion key is turned to the ACCº or ONº
position. After about 6 seconds, the
light w ill go off. This means the airbag
system is operating properly.
The warning light system monitors the
front airbag sensors, center airbag sensor
assembly, inflators, warning light, inter-
connecting wiring and power sources.
If either of the following conditions occurs,
this indicates a malfunction somewhere in
the parts monitored by the warning light
system. Contact your Toyota dealer as
soon as possible to service the vehicle.

The light does not come on when the
ignition key is turned to the ACCº or
ONº position or remains on.

The light comes on while driving. (j) Key Reminder Buzzer
This buzzer reminds you to remove the
key when you open the driver's door with
the ignition key in the ACCº or LOCKº
position.
CHECKING SERVICE REMINDER
INDI-
CATORS (except the low fuel level
warning light)
1. Apply the parking brake.
2. Open either side door or the back
door
The open door warning light should come
on.
3. Close the door.
The open door warning light should go off.
4. Turn the ignition key to ACCº.
The SRS airbag warning light should
come on. It goes off after about 6 sec-
onds.
5. Turn the ignition key to ONº, but do
not start the engine.
All the service reminder indicators except
the open door warning light and SRS air-
bag warning light should come on. The
ABSº warning light goes off after about 3
seconds.
If any service reminder indicator or warn-
ing buzzer does not function as described
above, either the bulb is burned out or the
circuit is in need of repair. Have it checked
by your Toyota dealer as soon as pos-
sible.
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