Door Module - Description

DESCRIPTION





This vehicle is equipped with two electronic front door control modules (1) (also known as a Driver Door Module/DDM, a Passenger Door Module/PDM or Front Door Multiplex/MUX Modules), one each on both the driver and passenger front doors. Each door control module is concealed behind the front door trim panel where it is secured through four integral mounting tabs (2) to the door hardware module carrier by four screws.

Each door control module contains a microprocessor and is connected to the various switches on that door. Both the driver and passenger side module also receive various hard wired switch inputs and provide numerous hard wired outputs to various devices located on their respective doors. In addition, both front door control modules communicate with each other and with other electronic modules in the vehicle over the Controller Area Network (CAN) B data bus system.

Concealed and protected 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 three connector receptacles that are integral to the module housing.

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.