Transmission Range (TR) Sensor
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The TR sensor has a set of Hall-effect sensors that have a pattern of ON/OFF states which are dependent on the PARK, REVERSE, NEUTRAL, DRIVE, 3,
2 or 1 position of the manual valve.
The TR sensor also provides signals for the starting system and the reverse lights.
The PCM/ TCM uses the TR sensor signal as an input for its strategy for shifting and TCC operation. The PCM/ TCM also uses the TR sensor signal for transmission fault detection and diagnostics.