Control Modules That Communicate Via Lin

Fig 1: Identifying Control Modules That Communicate Via LIN

Courtesy of VOLVO CARS CORPORATION

NOTE:

The illustration above and the table below is an example that shows model year 2007. All other information in the document is general and applies to all model years.

Control module	Name/ Function	Connected to/Master node	Miscellaneous
ACM	Alternator control module (ACM) Controls charge regulation of the battery.	Engine control module (ECM). Also diagnosed by the Central electronic module (CEM).
DMM	Damper motor module (DMM) Regulates the air flow in the passenger compartment, temperature between the right (only ECC) and left sides as well as recirculation.	Climate control module (CCM)	The number of damper motors varies depending on the equipment level and whether the vehicle is right or left hand drive.
GSM	Gear selector module (GSM) Provides input signals to the Transmission control module (TCM), about the position of the gear shift.	Transmission control module (TCM)	Vehicles with automatic transmission only.
HBS	Heart beat sensor (HBS) Component in the alarm system. Used to detect persons in the vehicle.	Central electronic module (CEM)	Only on vehicles with keyless entry systems.
IAU (applies to XC70 (08-) from structure week 201120)	Ignition antenna unit (IAU)	Central electronic module (CEM)
IMS	Interior motion sensor (IMS) (also called movement sensor) Used to detect movement inside the vehicle	Central electronic module (CEM)	Component in the expanded alarm system.
LCM	Left Camera Module (LCM)	Driver door module (DDM) or Passenger door module (PDM) depending on whether the vehicle is right or left hand drive.	Component in the BLIS system.
LDM	Left rear door module (LDM) Takes care of lock and window functions in the rear left door.	Driver door module (DDM) or to Passenger door module (PDM) depending on whether the vehicle is right or left hand drive.
LSM	Light switch module (LSM) Sends signals to the Central electronic module (CEM) concerning settings for the exterior and instrument lighting.	Central electronic module (CEM)
RCM	Right Camera Module (RCM)	Driver door module (DDM) or Passenger door module (PDM) depending on whether the vehicle is right or left hand drive.	Component in the BLIS system.
RDM	Right rear door module (RDM) Takes care of lock and window functions in the rear right door.	Driver door module (DDM) or to Passenger door module (PDM) depending on whether the vehicle is right or left hand drive.
	Control panel driver's door Sends signals to the Driver door module (DDM) for control of the window lifts.	Driver door module (DDM)
RKE	Remote Keyless Entry (RKE)	Keyless vehicle module (KVM)	Replaces the Remote receiver module (RRX) on vehicles with the keyless entry function. The receiver is physically connected to the Central electronic module (CEM), but is controlled by the Keyless vehicle module (KVM).
RRX	Remote Receiver Module (RRX)	Central electronic module (CEM)	Only vehicles without keyless entry functionality.
RSM	Rain sensor module (RSM) Detects whether there is water on the windscreen. Used to control the automatic wiper function.	Central electronic module (CEM)
SCL	Steering column lock module (SCL) Controls the steering column lock function.	Central electronic module (CEM)
SCM	Siren control module (SCM) Controls the siren function.	Central electronic module (CEM)
SCU (not XC70 (08-) from structure week 201120)	Start control module (SCU) Controls the start function and reads the key ID at the request of the Central electronic module (CEM).	Central electronic module (CEM)
SHM	Seat heating module (SHM), driver's side and Seat heating module (SHM), passenger-side.	Climate control module (CCM)
SWM	Steering wheel module (SWM) Concern signals from the steering wheel buttons for control of radio and telephone functions.	Infotainment control module (ICM) and to the Central electronic module (CEM).
WMM	Wiper motor module (WMM)	Central electronic module (CEM)