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Home >> Volvo >> 2008 >> V70 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Charging System, Electrical Control Modules, Engine Control Module (ECM) - Design And Function >> Forward Sensing Module (FSM) (2009-10) >> System Overview >> Signals
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System Overview: Signals

The table below summarizes the input signals to and output signals from the Forward Sensing Module (FSM). The signal types are divided into directly connected signals, serial communication and controller area network (CAN) communication. The graphic below displays the same information with the Volvo component designations.

Input Signals Output Signals
Directly connected:  Directly connected: 
  • Forward facing camera (27/5)
  • Indicator, visual collision warning (27/2)
Via local CAN-communication:  Via local CAN-communication: 
  • Forward facing radar (7/203)
  • Forward facing radar (7/203)
Via Controller Area Network (CAN) communication:  Via Controller Area Network (CAN) communication: 
  • Central electronic module (CEM) (4/56):
    • Steering wheel switch left (SWSL)
    • Stop lamp switch
    • Parking brake switch
    • Reversing light switch
  • Brake control module (BCM) (4/16):
    • Speed signal
    • Brake pressure switch
    • Switch, brake reduction
    • Brake pedal position switch
    • Body sensor cluster stability sensor (BSC)
  • Engine control module (ECM) (4/46):
    • Accelerator pedal signal
  • Steering wheel module (SWM) (3/130)
    • Switch, distance control
    • Switch
  • Infotainment control module (ICM) (3/281)
    • Switch, distance control
    • Switch
  • Driver information module (DIM) (5/1).
    • Switch, distance control
    • Switch
  • Transmission Control Module (TCM) (4/28)
    • Switch, distance control
    • Switch
  • Climate control module (4/6):
    • Switch, distance control
    • Switch
  • Central electronic module (CEM) (4/56)
  • Brake control module (BCM) (4/16)
  • Engine control module (ECM) (4/46)
  • Infotainment control module (ICM) (3/281)
  • Driver information module (DIM) (5/1).
Fig 1: Identifying Input Signals To And Output Signals From Forward Sensing Module (FSM)
GLL170517Courtesy of VOLVO CARS CORPORATION