Transmission Range Sensor
WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
PCM uses input signals from Transmission Range (TR) sensor to determine selected gear position, shift pattern and transmission fluid temperature. TR sensor harness connector is located on left side of transaxle. See Fig 1. TR sensor is also used to activate starter relay, back-up lights and prevent starter engagement in any gear except Park or Neutral.