Digital Transmission Range (TR) Sensor

WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Digital Transmission Range (TR) Sensor is located on the outside of the transmission at the manual lever.
The sensor completes the start circuit in PARK and NEUTRAL and the back-up lamp circuit in REVERSE. The sensor also opens/closes a set of four switches that are monitored by the powertrain control module to determine the position of the manual lever (P, R, N, (D), 2, 1).