Transmission Range (TR) Sensor Assembly

The Transmission Range (TR) sensor assembly is an internally mounted sensor that includes the detent spring, rooster comb and bracket, located next to the solenoid body. The components of the TR sensor are factory adjusted to each other and the TR sensor must be installed as a calibrated assembly. The TR sensor contains electronic circuitry that provides the PCM a fixed frequency duty cycle for each of the various positions of the manual lever (PARK, REVERSE, NEUTRAL, Overdrive (Circle D), M3, M2 and M1) to the PCM. The PCM uses the TR sensor signal for engine start, reverse lamps and for line pressure control, shift scheduling and Torque Converter Clutch (TCC) operation.