Toyota 2003 ECHO Owner's Manual page 39

—Front seat belt pretensioners
SY13021a
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
belts are quickly drawn back in by the
retractors so that the belts snugly restrain
the front seat occupants.
The front seat belt pretensioners are acti-
vated even with no passenger in the front
seat.
Collisions occurring at certain speeds and
angles may cause the seat belt preten-
sioners and SRS airbags not to operate
all together.
SP13504
This indicator comes on when the ignition
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, side airbag sensors, door side air-
bag sensors, front seat belt pretensioner
assemblies, inflators, warning light, inter-
connecting wiring and power sources. (For
details, see "Service reminder indicators
and warning buzzers" on page 86 in Sec-
tion 1–5.)
SU13113a
The front seat belt pretensioner system
mainly consists of the following compo-
nents and their locations are shown in the
illustration.
1. Front airbag sensors
2. SRS warning light
3. Airbag sensor assembly
4. Front seat belt pretensioner assemblies
The front seat belt pretensioners are con-
trolled by the airbag sensor assembly. The
airbag sensor assembly consists of a saf-
ing sensor and airbag sensor.
2003 ECHO from Aug. '02 Prod. (OM52481U)
39