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)

Or, hide this message: temporarily or permanently

Principles Of Operation




Driver Door Module (DDM)

Principles of Operation

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The Driver Door Module (DDM) allows the driver to program a personalized seat position that can be recalled using the memory set switch or a Remote Keyless Entry (RKE) transmitter (part of the Integrated Keyhead Transmitter (IKT) [Passive Anti-Theft System (PATS) only] key or part of the Intelligent Access (IA) [PATS with push button start] key). In addition to the position of the driver exterior mirror, the DDM also controls the position of the RF exterior mirror and the adjustable pedals. The DDM is hardwired to the power mirror switch, driver mirror, memory set switch and sends messages over the Medium Speed Controller Area Network (MS-CAN) to the Driver Seat Module (DSM) to adjust the RF passenger exterior mirror. Refer to Brakes and Traction Control for information on the adjustable pedals. Refer to Mirrors for information on the exterior mirrors.