Driver Door Module (DDM)

The Driver Door Module (DDM) directly controls the Driver Door Lock Actuator, Power Window Motor and the Left Side Power Mirror. For door lock control, the DDM receives direct inputs from the Driver Door Jamb Switch. However, during a driver door lock switch activation, the DDM must first send a Serial Data Class 2 message to the Rear Integration Module (RIM), which is the master of all lock operations. It the RIM determines that the correct conditions are present for lock activation to take place, the RIM sends a Serial Data Class 2 message back to the DDM and other appropriate door modules to allow lock activation.