F 150 2WD Pickup V8-5.4L SOHC VIN 5 (2004)
Seat Belt Buckle: Description and Operation
SAFETY BELT BUCKLE AND PRETENSIONER
The safety belt buckle and pretensioner is a pyrotechnic device that removes excess webbing from the safety belt when deployed. The pretensioner
works in conjunction with the front air bag system. When the pretensioners deploy, this causes the buckle to move downward, removing excess
webbing from the lap and shoulder safety belts.
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, safety belt retractors, and height adjusters) must be installed.
For safety belt buckle pretensioner diagnostic information, refer to Air Bag System.
For safety belt buckle pretensioner disposal information, refer to Air Bag System.
