Bus messages, seats (DSM)

/ 9-3 (9440) / 2009 / 8. Body / Seats / Technical description / Bus messages, seats (DSM)

Bus messages, seats (DSM)

For a detailed description of the car's bus system, read bus and diagnostics communication, detailed description .

DSM uses the following information

Bus messages	Value/Unit	Off	User	Description
Key position, ignition switch	Lock, Off, On, Start	CIM	ACC, DSM	DSM is woken up via the bus. ACC activates the seat heating in On position only.
Seat heating, personal settings	Auto/Manual	MIU	ACC	ACC selects the setting depending on the personal settings made via SID and SIDC

DSM sends the following information

Bus messages	Value / Unit	User	Description
Driver's seat, moving	On/Off	RLDM	RLDM control the Comfort Enable function, which in certain circumstances allows the seat to be operated when the ignition is off. RLDM will not deactivate the seat while it is in motion.
Memory function, request	Store/Read	DDM, PDM	DDM and PDM have memory positions stored for the mirrors. The control modules either store the current mirror position or read from memory and adjust the mirrors.
Memory function, setting	1-3	DDM, PDM	DDM and PDM have 3 memory positions stored for the mirrors. The control modules store or read from the current memory position.