Operation CHARM: Car repair manuals for everyone.

Principles of Operation

PRINCIPLES OF OPERATION

The driver door module (DDM) monitors all of the hardwired door ajar switches. Diagnostic information is retrieved from the DDM on the standard corporate protocol (SCP) network. The power door locks and the RKE system are all controlled by the DDM. The DDM also receives an input from the luggage compartment lid release switch and operates the luggage compartment lid release solenoid.