Transmission Range (TR) Sensor
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The Transmission Range (TR) sensor is an internally mounted sensor that includes the detent spring, rooster comb and bracket, located next to the solenoid body. The sensor is non adjustable and is not serviced independently. The components of the TR sensor are factory adjusted to each other and a new sensor must be installed as a calibrated assembly. The TR sensor contains electronic circuitry that provides the PCM a fixed frequency for each of the various positions of the manual lever (PARK, REVERSE, NEUTRAL, DRIVE, M3, M2 and M1) to the PCM. The PCM uses the TR sensor signal for engine functions (start, reverse lamps) and for Line Pressure Control (LPC), shift scheduling and Torque Converter Clutch (TCC) operation.