Component Description: PDM

WARNING: This page is about a different car, the 2023 Lincoln Nautilus. However, it is still accessible from the selected car via links, so may be relevant.

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.

For the exterior power folding mirrors feature, when the PDM receives the RH exterior mirror movement requests from DDM over the MS-CAN, it provides voltage and ground to the RH exterior mirror folding motor.

For the exterior memory mirrors feature, 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.

For the exterior heated mirrors feature, the PDM is responsible for supplying voltage to the LH exterior mirror glass heating element.

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, folding mirror motor circuits and mirror heater circuit.

PMI is required if installing a new module.