Belt Tension Sensor (BTS)
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The BTS is located at the RH front safety belt retractor pretensioner anchor point and operates as part of the Occupant Classification Sensor (OCS) system. To diagnose the BTS , refer to SUPPLEMENTAL RESTRAINT SYSTEM .