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System Overview: Signals

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The table below summarizes the input signals to and output signals from the audio module (AUD). The signal types are divided into directly connected signals and MOST communication. The illustration below displays the same information with the Volvo component designations.

Input signals Output signals
Directly connected: 
  • Microphone (16/77) analogue signals
  • Headset panel (16/111, 16/112) analogue control signals.
Directly connected: 
  • Headset panel (16/111, 16/112) analogue signals
  • Loudspeaker left front (16/4, 16/55)
  • Loudspeaker right front (16/3, 16/56)
  • Loudspeaker left rear (16/6)
  • Loudspeaker right rear (16/5)
  • Treble loudspeaker left D-post (16/57)
  • Treble loudspeaker right D-post (16/58).
Via MOST communication:  Via MOST communication: 
  • Infotainment Control Module (ICM) (16/1) master control module
  • Aerial module (ATM) (16/110)
  • CD module (MP2) (16/106)
  • MD module (MP1) (16/107)
  • Phone module (PHM) (16/60)
  • Multimedia module (MMM) (16/108).
  • Infotainment Control Module (ICM) (16/1) master control module
  • Subwoofer module (SUB) (16/79)
  • Phone module (PHM) (16/60)
  • Multimedia module (MMM) (16/108).
Fig 1: Identifying Volvo Component Designations
GLL101984Courtesy of VOLVO CARS CORPORATION