Mariner 2WD L4-2.3L VIN Z (2005)
Seat Belt Buckle Switch: Description and Operation
SAFETY BELT BUCKLE SWITCHES
As part of the supplemental restraint system (SRS), the front safety belt buckles are equipped with safety belt buckle switches. The safety belt buckle
switches are comprised of integrated circuits called Hall-effect sensors. The safety belt buckle switches (Hall-effect sensors) are located in the driver and
passenger safety belt buckles. 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. The RCM also
communicates the driver safety belt buckle switch status to the instrument cluster module, which monitors the information to control the safety belt
warning indicator.
