Tech notesB0061:11 Passenger Seatbelt Tension Sensor: Circuit Short to Ground
B0061:12 Passenger Seatbelt Tension Sensor: Circuit Short to Battery
B0061:13 Passenger Seatbelt Tension Sensor: Circuit Open
B0061:1C Passenger Seatbelt Tension Sensor: Circuit Voltage Out of Range
B0061:49 Passenger Seatbelt Tension Sensor: Internal Electronic Failure
B0061 Mercury DescriptionThe Belt Tension Sensor (BTS) operates in conjunction with the Occupant Classification System (OCS). The Occupant Classification System (OCS) interprets a variable voltage signal provided by the Belt Tension Sensor (BTS) to identify the possible presence of a child safety seat in the front passenger seat. The voltage output of the Belt Tension Sensor (BTS) is proportional to the amount of tension applied to the sensor by the belt: no belt tension causes a low voltage (approximately 0.95 volt) to be output, and high belt tension causes a high voltage (approximately 3.8 volts) to be returned to the Occupant Classification System Module (OCSM).
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.