sensor TOYOTA LAND CRUISER 1997 Owners Manual

30
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 airbag
is operating properly.
The SRS airbag warning light system
monitors the airbag sensor assembly, in-
flators, warning light, interconnecting wir-
ing 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 noise 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.

31
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 frontalcollision.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 nitrogen gas to help
restrain the forward motion of the occu- pants.When the airbag inflates, they produce a fairly
loud noise and release some smoke
along with the nitrogen gas. This is notharmful 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 happens 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.

33
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 in-
jured. Sit up straight and well back
in the seat, and always use your
seat belt. 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 installa- tion of a child restraint system, see
Child restraintº in this chapter.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
component or wiring, such as the
steering wheel, column cover, front
passenger airbag, airbag sensor
assembly. Doing any of these may cause sudden SRS airbag inflation
or disable the system, which could
result in personal injury.

65
The warning light system monitors the air-
bag sensor assembly, inflators, warning
light, interconnecting wiring and powersources.
If either of the following conditions occurs, this indicates a malfunction somewhere inthe 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.
(l) 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 LOCKºposition.
CHECKING SERVICE REMINDER INDI-
CATORS
1. Apply the parking brake.
2. Open one of the side doors 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. Place the four-wheel drive control le-
ver in
Nº position and the selector lever in Pº position.
5. Turn ignition key to ACCº.
The SRS airbag warning light should
come on. It goes off after about 6 sec-onds.
6. 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.