Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Driver Door Module

The Drivers Door Module (DDM) directly controls the driver's door window motor and the express down window feature. The DDM sends window UP/DOWN messages received from the Power Door Lock Switch to the Passenger Door Module (PDM) and Rear Door Module (RDM) modules over the Simple Bus Interface (SBI) line. The DDM also contains a Class 2 data link which communicates with other vehicle system modules. The LH front power door locks and power outside rear view mirror are also controlled through the DDM.