Expedition 4WD V8-5.4L SOHC VIN 5 (2005)
Seat Belt Buckle Switch: Description and Operation
SAFETY BELT BUCKLE SWITCHES
As part of the supplemental restraint system (SRS), the driver and front outboard passenger safety belt buckles are equipped with safety belt buckle
switches. The safety belt buckle switches indicate to the restraints control module (RCM) whether the safety belts are connected or disconnected. The
RCM uses this information in determining the deployment rate of the dual-stage driver and passenger air bag modules.
