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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Modules And Components - Design And Function - 2 Of 5 >> Closing Velocity Module (CVM) (2012) >> System Overview >> Signals
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System Overview: Signals

The table below summarizes the input signals and output signals to and from the Closing velocity module (CVM). The signal type is divided into directly connected signals, CAN-, sensor-CAN-, and internal CAN communication. The illustration below reproduces the same information and Volvo component designations.

Input signals Output signals
Directly connected:  Directly connected: 
  • Power supply
  • Ground
Via internal CAN communication (only XC60):  Via internal CAN communication (only XC60): 
  • Supplemental Restraint System Module (SRS) (4/9)
  • Supplemental Restraint System Module (SRS) (4/9)
Via sensor-CAN (only S60 (11-) and V60):  Via sensor-CAN (only S60 (11-) and V60): 
  • Supplemental Restraint System Module (SRS) (4/9)
  • Supplemental Restraint System Module (SRS) (4/9)
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Central electronic module (CEM) (4/56)
  • Engine control module (ECM) (4/46)
  • Brake control module (BCM) (4/16)
  • Steering wheel angle sensor module (SAS) (4/68)
  • Driver information module (DIM) (5/1) (only XC60 before structure week201046)
  • Climate control module (CCM) (4/6) (not XC60 before structure week 201046)
  • Driver information module (DIM) (5/1).
  • Central electronic module (CEM) (4/56)
  • Brake control module (BCM) (4/16)
  • Engine control module (ECM) (4/46)
Fig 1: Identifying Input Signals And Output Signals To And From The Closing Velocity Module (CVM)
GLL174098Courtesy of VOLVO CARS CORPORATION