Transmission Range (TR) Position Sensor Assembly

The transmission range (TR) position sensor assembly 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 position sensor are factory adjusted to each other and a new sensor must be installed as a calibrated assembly. The TR position sensor contains electronic circuitry that provides the PCM a fixed frequency at a duty cycle 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 position sensor signal for engine functions (start, reverse lamps) and for line pressure control, shift scheduling and TCC operation.