Escape 4WD V6-3.0L (2008)
Seat Belt Tensioner: Description and Operation
Safety Belt Buckle 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 front air bags deploy, the pretensioners deploy, causing 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 front air bags and 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 Systems.
For safety belt buckle pretensioner disposal information, refer to Air Bag Systems.
Safety Belt Retractor Pretensioner
The driver and passenger seat safety belt retractors use a safety belt pretensioner system. This works in conjunction with the safety belt buckle
pretensioner, front air bag system and, if equipped, side air bag system. The pretensioner is a pyrotechnic device that removes excess webbing slack
from the safety belt. When activated by the restraints control module (RCM), the pretensioner deploys in the retractor, removing excess slack from the
lap and shoulder safety belt. The pretensioners are activated when the RCM detects an impact force exceeding a programmed limit.
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.
