Volvo 2006 XC70, Owner'S Manual

Page: 17 / 211

9
Occupant Weight Sensor (OWS)
Occupant Weight Sensor (OWS) indicator light
Disabling the passenger's
side front airbag
Volvo recommends that ALL occupants (adults
and children) shorter than four feet seven
inches (140 cm) be seated in the back seat of
any vehicle with a front passenger side airbag,
and be properly restrained for their size and
weight. See also the child safety recommenda-
tions on page 21 .
The passenger’s side front airbag is
automatically enabled/disabled by the
Occupant Weight Sensor (OWS), a system that
monitors the weight of the person or object in
the front passenger’s seat. The system consists
of a silicone-filled bag located under the
padding in the front passenger’s seat cushion, a
control module located under this seat, and a
8803403m
seat belt tension sensor, located on the
outboard side of the seat.
The OWS system continuously monitors the
pressure on the front passenger's seat cushion
and the tension applied to the seat belt. Based
on this data, OWS assesses the weight of the
occupant or object in the front passenger's
seat. This information is transmitted to the
SRS system control module, which enables or
disables the passenger's side front airbag
accordingly, as indicated in the table to the
right.
If the system is functioning normally, the
status of the front passenger’s side airbag
(enabled/ disabled) will be shown by the OWS
indicator light as explained in the table to the
right . The OWS indicator light is separate and
in addition to the SRS warning light in the
instrument panel.
NOTE: When the ignition is switched on, the
OWS indicator light will go on for up to 10
seconds while the system performs a self-
diagnostic test and then go out.
However, if a fault is detected in the system:
•
The OWS indicator light will stay on
•
The SRS warning light (see page 5) will
come on and stay on
•
The message PASS. AIRBAG OFF SER-
VICE URGENT will be displayed in the
information display.
Passenger's OWS Passenger's
Seat Indicator side front
occupancy light status airbag
status status
Seat OWS Passenger's
unoccupied/ indicator light side front airbag
person or disabled
object is not lit
weighing
less than approx.
15 lbs (7 kg) on
seat
Seat OWS Passenger's
occupied by a indicator light side front
person or airbag
object lights up disabled
weighing up
to approx. 55-65
lbs (25-30 kg)
Seat OWS Passenger's
occupied by a indicator light side front
person or airbag
object is not lit enabled
weighing more
than approx.
55-65 lbs
(25-30 kg)
(contd. on following page)