Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
The Belt Tension Sensor (BTS) operates in conjunction with the OCS. The 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 OCSM.
The OCSM monitors the Belt Tension Sensor (BTS) and related circuits for the following faults:
- Resistance out of range
- Unexpected voltage
- Short to ground
- Faulted Belt Tension Sensor (BTS) (part of right front passenger seatbelt buckle)
PPT AX OCSM DTC FAULT TRIGGER CONDITIONS
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B0061:11 | Passenger Seatbelt Tension Sensor: Circuit Short to Ground | Sets when the OCSM measures voltage below a predetermined threshold from the Belt Tension Sensor (BTS) signal circuit. An open Belt Tension Sensor (BTS) VREF circuit can also set this DTC. |
| B0061:12 | Passenger Seatbelt Tension Sensor: Circuit Short to Battery | Sets when the OCSM measures voltage above a predetermined threshold from the Belt Tension Sensor (BTS) signal circuit. An open Belt Tension Sensor (BTS) return circuit can also set this DTC. |
| B0061:13 | Passenger Seatbelt Tension Sensor: Circuit Open | Sets when the OCSM senses an open from the Belt Tension Sensor (BTS) circuit. |
| B0061:64 | Passenger Seatbelt Tension Sensor: Signal Plausibility Failure | Sets when the passenger seatbelt is unbuckled and the OCSM measures voltage from the Belt Tension Sensor (BTS) signal circuit greater than the maximum voltage returned during normal sensor operation. |