Transmission Position Sensor/Switch: Description and Operation

Manual Lever Position (MLP) Sensor:

PURPOSE
The Manual Lever Position (MLP) sensor provides a resistance signal to the Powertrain Control Module (PCM), notifying the PCM of the current transmission shift lever position.

OPERATION
The PCM monitors the voltage across a series of step down resistors that corresponds to the position of the MLP.

CONSTRUCTION
The MLP has six discreet resistors in series. The sensor is decoded by looking at differential voltages produced in each of the shift lever positions.