FORD 2005 F-150 - Manual (Page 108)

Front outboard safety belt pretensioners
The safety belt pretensioners are designed to tighten the safety belts
firmly against the occupant’s body during a collision. This maximizes the
effectiveness of the safety belts and helps properly position the occupant
relative to the airbag to improve protection. The safety belt
pretensioners can be either activated alone or, if the collision is of
sufficient severity, together with the airbags.
Front outboard safety belt energy management retractors
The front safety belt energy management retractors allow webbing to be
pulled out of the retractor in a gradual and controlled manner in
response to the occupant’s forward momentum. This helps reduce the
risk of force-related injuries to the occupant’s chest by limiting the load
on the occupant. Refer to Energy management retractors section in
this chapter.
Determining if the Personal Safety System
ி is operational
The Personal Safety System
௢ uses a warning light in the instrument
cluster or a back-up tone to indicate the condition of the system. Refer
to the Warning lights and chimes section in the Instrument Cluster
chapter. Routine maintenance of the Personal Safety System
௢ is not
required.
The Restraints Control Module (RCM) monitors its own internal circuits
and the circuits for the airbag supplemental restraints, crash sensor(s),
safety belt pretensioners, front safety belt buckle sensors, and the driver
seat position sensor. In addition, the RCM also monitors the restraints
warning light in the instrument cluster. A difficulty with the system is
indicated by one or more of the following.
• The warning light will either flash or stay lit.
• The warning light will not illuminate immediately after ignition is
turned on.
• A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and warning light are repaired.
If any of these things happen, even intermittently, have the Personal
Safety System
௢ serviced at an authorized dealer immediately. Unless
serviced, the system may not function properly in the event of a
collision.
2005 F-150 (f12)
Owners Guide (post-2002-fmt)
USA (fus)
Seating and Safety Restraints
108