Component Description: PDM

For the exterior power functions, when the RH exterior mirror is selected, the PDM supplies voltage and ground to the appropriate RH exterior mirror motor to drive the mirror glass in the desired direction based on messages received from the DDM through the MS-CAN.

If the vehicle is equipped with memory mirrors the PDM monitors the potentiometers in the RH exterior mirror to determine the position of the exterior mirror glass. Preset memory positions for the RH exterior mirror glass are stored in the PDM.

If the vehicle is equipped with heated exterior mirrors and without memory mirrors, based on the mirror heat request message received from the FCIM, the PDM controls the operation of the RH heated exterior mirror glass.

When a concern exists, the PDM is capable of setting and storing Diagnostic Trouble Codes (DTCs) for the RH exterior mirror motor drive circuits, position sensor circuits (if equipped), folding mirror motor circuits (if equipped) and mirror heater circuit (if equipped).