Transmission Position Sensor/Switch: Description and Operation

DESCRIPTION
The Transmission Range (TR) Sensor incorporates a series of step down resistors which act as a voltage divider.


PURPOSE
The Powertrain Control Module (PCM) monitors the voltage which correspond to the position of the manual lever and this information is used in determining idle control and desired gear and electronic pressure control pressures.

This sensor also houses the START and BACKUP lamp circuits.