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Additional Safety Features 57
The SRS system is continually monitored
by the control unit. A control unit is
mounted on a bracket above the engine
cover which detects deceleration. The con-
trol unit also contains a standby power unit
which can supply the system with power
for a short time, should the normal supply
be broken.
If the control unit detects a sufficiently vio-
lent deceleration (collision), the system is
activated. The gas generator triggers and
fills the bag with a non-toxic gas within a
few hundredths of a second. During a colli-
sion, after the bag has been filled, gas flows
out through two holes in the weave. These
holes are large enough to let the airbag col-
lapse slowly, gently catching the driver.
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In the event of a problem in the SRS sys-
tem, a telltale shows on the graphic display
in the instrument cluster. This telltale, to-
gether with other telltales in the cluster,
also light up when the engine is started.
The telltale should go out after approxi-
mately 10 seconds when the starting key
has been turned to the drive position.
If a problem develops in the system, the
INFO telltale will come on together with
the SRS telltale.
CAUTION
The vehicle should be taken to an autho-
rized Volvo Truck dealer immediately if
the SRS telltale stays on or lights up
when the vehicle is being driven.
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