1999 TOYOTA TERCEL sensor

'99 TERCEL (U)29
CAUTION
After inserting the tab, make sure
the tab and buckle are locked and
that the seat belt extender is not
twisted.
Do not insert coins, clips, etc. in
the buckle as this may prevent you
from properly latching the tab and
buckle.
If the seat belt does not function
normally, immediately contact your
Toyota dealer. Do not use the seat
until the seat belt is fixed. It cannot
protect an adult occupant or your
child from injury.
ÐFront seat belt pretensioners
The driver and front passenger 's seat
belt pretensioners are designed to be
activated in response to a severe fron-
tal impact.
When the airbag sensor detects the shock
of a severe frontal impact, the front seat
belt is quickly drawn back in by the re-
tractor so that the belt snugly restrains
the front seat occupants.
The seat belt pretensioners are activated
even with no passenger in the front seat.This indicator comes on when the igni-
tion key is turned to the ºACCº or
ºONº position. It goes off after about
6 seconds. This means the front seat
belt pretensioners are operating proper-
ly.
This warning light system monitors the
airbag sensor assembly, seat belt preten-
sioner assemblies, warning light, intercon-
necting wiring and power sources. (For
details, see ºService reminder indicators
and warning buzzersº in Chapter 1- 5.)

'99 TERCEL (U)
30
The seat belt pretensioner system mainly
consists of the following components and
their locations are shown in the illustra-
tion. 1. SRS airbag warning light
2. Seat belt pretensioner assemblies
3. Airbag sensor assembly
The seat belt pretensioner is controlled by
the airbag sensor assembly. The airbag
sensor assembly consists of a safing sen-
sor and airbag sensor. When a seat belt pretensioner is acti-
vated, an operating noise may be heard
and a small amount of smoke- like gas
may be released. This gas is harmless
and does not indicate that a fire is occur-
ring.
Once the seat belt pretensioner has been
activated, the seat belt retractor remains
locked.
CAUTION
Do not modify, remove, strike or open
the front seat belt pretensioner as-
semblies, airbag sensor or surround-
ing area or wiring. Doing any of
these may cause sudden operation of
the front seat belt pretensioners or
disable the system, which could re-
sult in serious injury.
Failure to follow these instructions
can result in serious injuries.
NOTICE
Do not perform any of the following
changes without consulting yourToyota dealer. Such changes caninterfere with proper operation of the
seat belt pretensioners in some
cases.
Installation of electronic items such
as a mobile two- way radio, cassette
tape player or compact disc player
Repairs on or near the front seatbelt retractor assemblies
Modification of the suspension sys-tem
Modification of the front end struc-ture
Attachment of a grille guard (bull
bar, kangaroo bar, etc.), snowplow,winches or any other equipment tothe front end
Repairs made on or near the front
end structure or console

'99 TERCEL (U)
32
CAUTION
A driver or front passenger too close
to the steering wheel or dashboard
during airbag deployment can be
killed or seriously injured. Toyota
strongly recommends that: The driver sit as far back as pos-
sible from the steering wheel while
still maintaining control of the ve-
hicle.
The front passenger sit as far back
as possible from the dashboard.
All vehicle occupants be properly
restrained using the available seat
belts.
This indicator comes on when the igni-
tion key is turned to the ºACCº or
ºONº position. It goes off after about
6 seconds. This means the SRS airbags
are operating properly.
This warning light system monitors the
airbag sensor assembly, inflators, warning
light, interconnecting wiring and power
sources. (For details, see ºService remain-
der indicators and warning buzzersº in
Chapter 1- 5.)The SRS airbag system is designed to
activate in response to a severe frontal
impact within the shaded area between
the arrows in the illustration.
There may be the case that the SRS air-
bags will not activate with such an impact
in which the occupant wearing the seat
belt correctly would not get serious injury.
The SRS airbags will deploy if the severi-
ty of the impact is above the designed
threshold level, comparable to an approxi-
mate 20 km/h (14 mph) collision when
impacting straight into a fixed barrier that
does not move or deform.

'99 TERCEL (U)33
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
impact, or if it is involved in an underride
collision (a collision in which the nose of
the vehicle ºunderridesº, or goes under,
the bed of a truck, etc.).
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.
Collision from the rear
Vehicle rollover
Collision from the side
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.
Hitting a curb,
edge of pavement or
hard material
Falling into or
jumping over a
deep hole
Landing hard or vehicle falling
The SRS airbags may deploy if a seri-
ous impact occurs to the underside of
your vehicle. Some examples are shown
in the illustration.

'99 TERCEL (U)
34
The SRS airbag system mainly consists of
the following components and their loca-
tions are shown in the illustration. 1. SRS airbag warning light
2. Airbag module for driver (airbag and inflator)
3. Airbag module for passenger (airbag and inflator)
4. Airbag sensor assembly
The airbag sensor assembly consists of a
safing sensor and 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 gas to help restrain
the forward motion of the occupants.
When the airbags inflate, they produce a
fairly loud noise and release some smoke
and residue along with non- toxic gas. This
does not indicate a fire. This gas is nor-
mally harmless, however, for those who
have delicate skin, it may cause minor
skin irritation. Be sure to wash off any
residue as soon as possible to prevent
minor skin irritation.
Deployment of the airbags happens in a
fraction of a second, so the airbags must
inflate with considerable force. While the
system is desi
gned 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 themselves will
not be hot. The airbags are designed to
inflate only once. A crash severe enough to inflate the air-
bags may break the windshield as the
vehicle buckles. In vehicles with a pas-
senger airbag the windshield may also be
damaged by absorbing some of the force
of the inflating airbag.

'99 TERCEL (U)37
Do not put objects or your pets on
or in front of the dashboard or
steering wheel pad that houses the
airbag system. They might restrict
inflation or cause death or serious
injury as they are projected rear-
ward by the force of deploying air-
bags. Likewise, the driver and front
passenger should not hold things in
their arms or on their knees.
Do not modify or remove any wir-
ing. Do not modify, remove, strike
or open any components such as
the steering wheel pad, steering
wheel, column cover, front passen-
ger airbag cover, front passenger
airbag or airbag sensor assembly.
Doing any of these may cause sud-
den SRS airbag inflation or disable
the system, which could result in
death or serious injury.
Failure to follow these instructions
can result in death or serious inju-
ries.NOTICE
Do not perform any of the following changes without consulting yourToyota dealer. Such changes can interfere with proper operation of the
SRS airbag system in some cases.
Installation of electronic items suchas a mobile two- way radio, cassette
tape player or compact disc player
Modification of the suspension sys-tem
Modification of the front end struc-ture
Attachment of a grille guard (bullbar, kangaroo bar, etc.), snowplow,
winches or any other equipment tothe front end
Repairs made on or near the front end structure, console, steering col-
umn, steering wheel or dashboard
near the front passenger airbag

'99 TERCEL (U)39
CAUTION
A driver too close to the steering
wheel during airbag deployment can
be killed or seriously injured. Toyota
strongly recommends that: The driver sit as far back as pos-
sible from the steering wheel while
still maintaining control of the ve-
hicle.
All vehicle occupants be properly
restrained using the available seat
belts.
This indicator comes on when the igni-
tion key is turned to the ºACCº or
ºONº position. It goes off after about
6 seconds. This means the SRS airbag
is operating properly.
This warning light system monitors the
airbag sensor assembly, inflator, warning
light, interconnecting wiring and power
sources. (For details, see ºService remind-
er indicators and warning buzzersº in
Chapter 1- 5.)The SRS airbag system is designed to
activate in response to a severe frontal
impact within the shaded area between
the arrows in the illustration.
There may be the case that the SRS air-
bag will not activate with such an impact
in which the occupant wearing the seat
belt correctly would not get serious injury.
The SRS airbag 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
impacting 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 airbag
may not deploy.

'99 TERCEL (U)41
The SRS airbag system mainly consists of
the following components and their loca-
tions are shown in the illustration.1. SRS airbag warning light
2. Airbag module for driver (airbag and inflator)
3. Airbag sensor assembly
The airbag sensor assembly consists of a
safing sensor and airbag sensor. In a severe frontal impact, the sensor de-
tects deceleration and the system triggers
the airbag inflator. Then a chemical reac-
tion in the inflator momentarily fills the
airbag with non- toxic gas to help restrain
the forward motion of the driver.
When the airbag inflates, it produces a
fairly loud noise and releases some
smoke and residue along with non- toxic
gas. This does not indicate a fire. This
gas is normally harmless, however, for
those who have delicate skin, it may
cause minor skin irritation. Be sure to
wash off any residue as soon as possible
to prevent minor skin irritation.
Deployment of the airbag happens in a
fraction of a second, so the airbag must
inflate with considerable force. While the
system is desi
gned to reduce serious inju-
ries, it may also cause minor burns or
abrasions and swellings.
The steering wheel hub may be hot for
several minutes, but the airbag itself will
not be hot. The airbag is designed to
inflate only once.
CAUTION
The SRS airbag system is designed
only as a supplement to the primary
protection of the driver side seat belt
system. The driver can be k illed or
seriously injured by an inflating air-
bag if they do not wear the available
seat belts. During sudden braking just
before a collision, an unrestrained
driver can move forward into direct
contact with or close proximity to the
airbag which may then deploy during
the collision. To obtain maximum
protection in an accident, the driver
and all passengers in the vehicle
must wear their seat belts. Wearing a
seat belt during an accident reduces
the chances of death or serious inju-
ries or being thrown out of the ve-
hicle. For instructions and precau-
tions concerning the seat belt system,
see ºSeat beltsº in this chapter.