Driver Door Module (DDM)

For the power mirror function, the DDM receives exterior mirror movement requests through the LIN circuit from the master window control switch. The DDM then provides voltage and ground to the appropriate LH exterior mirror motor to drive the mirror glass in the desired direction.

When the master window control switch requests RH exterior mirror functions, the DDM sends the requests to the PDM through the Medium Speed Controller Area Network (MS-CAN).

For the heated mirror function, the DDM supplies voltage to the LH exterior mirror glass heating element based on messages received the BCM.

The DDM is capable of setting and storing Diagnostic Trouble Codes (DTCs) for the LH exterior mirror circuits when a concern exists.