Description And Operation: Description
This vehicle is equipped with two electronic front door control modules (DDM) and a Passenger Door Module (PDM), one each on both the driver and passenger front doors. Vehicles equipped with the front door control modules and certain other options may also be equipped with an electronic rear door control module (shown in the illustration) (not to be confused with the Module Power Sliding Door Left or Right) on either or both rear sliding doors.
Each door control module contains a Central Processor Unit (CPU) and communicates with the other door control modules as well as other electronic modules in the vehicle over the Controller Area Network (CAN) Interior High Speed (IHS) data bus system. Concealed within the molded plastic door control module housing is the printed circuit board and the other electronic circuitry of the module. The front door control modules are connected to the vehicle electrical system through up to eight connector receptacles that are integral to the module housing, while the rear door control modules are connected through two connector receptacles integral to the module housing.
Each door control module is concealed behind the front or rear door trim panel where it is secured through two integral mounting tabs to the door hardware module carrier by two screws. The front door control modules are located in the upper front corner of the front door hardware carriers, just below the mirror flag area of the front door. The rear door control modules are located near the lower edge of the rear door hardware module carriers, just forward of center.
A door control module cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced. The door control module software is flash programmable.