Control Module
Closing velocity module (CVM) is a standard control module on XC60, S60 (11-) and V60 as well as for model year 2012 also on S80 (07-), S80L, V70, and XC70. The control module is included in the support function and has the main function of preventing or reducing damage from collisions at low speed.
When the engine is started, the support function is always activated and it is active within the speed range of 4 - 30 km/h.
Also on S80 (07-), S80L, V70 (08-), and XC70 (08-), the driver can turn off the function during the existing driving cycle via the menu in Infotainment control module (ICM).
The laser sensor in the Closing velocity module (CVM) is also active in ignition position II.
The Closing velocity module (CVM) uses lasers to detect whether the vehicle is on a collision course with a vehicle ahead.
The Closing velocity module (CVM) can request different functions depending on the actual situation:
- Preloading the brake system
- automatic braking
- torque limiting in engine
- brake assistance EBA.
Closing velocity module (CVM) communicates with other control modules through the CAN-net. The control module is connected to the high-speed side of the CAN-net.
For XC60 Closing velocity module (CVM) also communicates on an internal CAN-net with Supplemental restraint system module (SRS)
For S60 (11-) and V60 the Closing velocity module (CVM) also communicates via the sensor network with Supplemental restraint system module (SRS)
The Closing velocity module (CVM) checks performed activations, input and output signals as well as functions through built-in diagnostics.
A diagnostic trouble code (DTC) is stored when, after validation, the control module detects a fault. In certain cases the faulty signal is also replaced with a substitute value or certain functions are limited.
The Closing velocity module (CVM) is powered, by battery voltage (Ubat ), via a fuse in the Central electronic module (CEM). Power is supplied in ignition positions II and III. Grounding is via cables that are grounded at the left-hand A-pillar.
The Closing velocity module (CVM) is positioned inside the front window, next to the rear view mirror.