F 450 4WD Super Duty V8-6.4L DSL Turbo (2008)
Seat Belt Tensioner: Description and Operation
SAFETY BELT RETRACTOR AND PRETENSIONER
The front outboard safety belt retractors use a safety belt pretensioner system. The pretensioner is a pyrotechnic device that removes excess webbing
slack from the safety belt. The pretensioners are activated when the restraints control module (RCM) detects an impact force exceeding a programmed
limit and deployment is required.
If the vehicle is involved in a collision that results in deployment of the safety belt pretensioners, a new driver and passenger seat belt system (including
safety belt buckle and pretensioners or safety belt retractor and pretensioners, safety belt retractors, safety belts, buckles and height adjusters) must be
installed.
For safety belt retractor pretensioner diagnostic information, refer to Air Bag Systems.
For safety belt retractor pretensioner disposal information, refer to Air Bag Systems.