Control Modules That Communicate Via Lin

Fig 1: Identifying LIN - Local Interconnect Network

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	Other
ACM	Alternator control module (ACM) Controls charge regulation of the battery.	Engine control module (ECM). Also diagnosed by the Central electronic module (CEM).
AQS	Air quality sensor (AQS) Measures the particle content in the air into the climate system.	Climate control module (CCM)	The Climate control module (CCM) uses this signal as a basis for control of the damper for recirculation.
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)
GDL	Gas discharge lamp module (GDL) Controls the function of the GDL lamps.	Central electronic module (CEM)	In total there are two in the vehicle, one on each side. The control module on the left-hand side is the master for the two LIN units.
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.
LDM	Left rear door module (LDM) Takes care of lock and window functions in the rear left door.
RDM	Right rear door module (RDM) Takes care of lock and window functions in the rear right door.
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.	Central electronic module (CEM)	Used to control the automatic wiper function.
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	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)	Infotainment control module (ICM)	Concerns the steering wheel buttons for control of radio and telephone functions.
WMM	Wiper motor module (WMM)	Central electronic module (CEM)