Principles of Operation

PRINCIPLES OF OPERATION

The driver door module (DDM) monitors all of the door ajar switches which are hardwired to the module. This door ajar information is sent to the vehicle dynamics module (VDM) and other modules using the standard corporate protocol (SCP) communication network. Diagnostic information is retrieved from the DDM on the SCP network.

The power door locks, power mirrors and the remote keyless entry (RKE) system are all controlled by the DDM. If equipped with memory seats, the seat adjust switch provides inputs to the DDM, which sends this information to the driver seat module (DSM) over the SCP network.

If the vehicle is not equipped with a power luggage compartment lid, the DDM receives an input from the luggage compartment lid release switch and operates the luggage compartment lid release solenoid. If the vehicle is equipped with a power luggage compartment lid, the DDM sends a signal to the liftgate/trunk module (LTM), which will operate the luggage compartment lid release solenoid. The DDM also contains the tire pressure monitoring system (TPMS).