2008 Volvo XC70FACTORY OEM SERVICE PROCEDURE

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 illustration below displays the same information with the Volvo component designations.

Input signals Output signals
Directly connected:  Directly connected: 
-
  • 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)
    • Rotary switch collision warning
  • Infotainment control module (ICM) (3/281)
    • Rotary switch collision warning
  • Driver information module (DIM) (5/1)
    • Rotary switch collision warning
  • Transmission Control Module (TCM) (4/28)
    • Rotary switch collision warning
  • Climate control module (CCM) (4/6):
    • Rotary switch collision warning
  • 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 And Output Signals From Forward Sensing Module (FSM)
GLL152819Courtesy of VOLVO CARS CORPORATION
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