Component Description: DDM

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 mirror power functions, the DDM receives mirror movement requests through the LIN circuit from the driver door window control switch. When the LH exterior mirror is selected, the DDM provides voltage and ground to the appropriate LH exterior mirror motor to drive the mirror glass in the desired direction. The DDM sends RH exterior mirror movement requests to the PDM through the MS-CAN.

For the exterior power folding mirrors feature, the DDM receives mirror movement requests through the LIN circuit from the driver door window control switch. When a mirror fold is initiated, the DDM supplies voltage and ground to the LH exterior mirror folding motor. When the exterior mirror fold switch is utilized again, the DDM reverses the polarity of the voltage supplied to the LH exterior mirror folding motor. The DDM sends RH exterior mirror fold requests to the PDM through the MS-CAN.

For the exterior memory mirrors feature, the DDM monitors the potentiometers in the LH exterior mirror to determine the position of the exterior mirror glass. Preset memory positions for the LH exterior mirror glass are stored in the DDM.

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

When a concern exists, the DDM is capable of setting and storing Diagnostic Trouble Codes (DTCs) for the LH exterior mirror motor drive circuits, position sensor circuits, heater element circuits and folding mirror motor circuits.

PMI is required if installing a new module.