F 150 2WD V8-4.6L VIN W (2007)
Seat Belt Tension Sensor: Description and Operation
Safety Belt Tension Sensor
SAFETY BELT TENSION SENSOR
The safety belt tension sensor:
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is part of the front outboard passenger safety belt and retractor assembly.
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is located at the safety belt anchor point.
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is used in conjunction with the occupant classification sensor (OCS) system.
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is a 3-wire Hall-effect sensor that is part of the front passenger safety belt and retractor assembly.
The safety belt tension sensor is used by the OCS system to identify the presence of a child safety seat on the front outboard passenger seat, when the
child safety seat is installed according to manufacturer instructions. The safety belt tension sensor senses the tension on the safety belt assembly then
provides an output to the OCS system electronic control unit (ECU), indicating that the safety belt assembly is cinched. After sensing the weight applied
to the seat by the occupant and using the safety belt tension sensor input, the OCS system determines how the occupant should be classified and
communicates this information to the restraints control module (RCM). If the occupant is classified to be a child, the RCM will then automatically
deactivate the passenger air bag module.
