Toyota 2000 Yaris Owner's Manual page 36

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This indicator comes on when the igni-
tion key is turned to the "ON" position.
It goes off after about 6 seconds. This
means the front seat belt pretensioners
are operating properly.
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, seat belt pretensioner assemblies,
warning light, interconnecting wiring and
power sources. (For details, see "Service
reminder indicators and warning buzzers"
in Section 1- 5.)
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ECHO_U
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The seat belt pretensioner system mainly
consists of the following components and
their locations are shown in the illustra-
tion.
1. SRS warning light
2. Seat belt pretensioner assemblies
3. Airbag sensor assembly
4. Front airbag sensors
The seat belt pretensioner is controlled by
the airbag sensor assembly. The airbag
sensor assembly consists of a safing sen-
sor and airbag sensor.
2000 ECHO (OM52411U)
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.