F 150 2WD V8-4.6L VIN W (2007)
Seat Belt Tensioner: Description and Operation
SAFETY BELT PRETENSIONERS
As part of the supplemental restraints system (SRS), the safety belt buckles are equipped with pretensioners. The safety belt buckle pretensioners remove
excess slack from the safety belt webbing. The pretensioners are activated by the restraints control module (RCM) when the module detects a frontal or
side impact event exceeding a programmed limit and the safety belt is latched (buckled). The passenger safety belt pretensioner can deploy regardless of
the presence of an occupant if the front outboard passenger safety belt is latched (buckled).
