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System Overview: Signals

The table below summarizes the input signals to and output signals from the accessory USB unit (AUU). The signal types are divided into directly connected signals, serial communication and MOST communication. The illustration below displays the same information with the Volvo component designations.

Input signals Output signals
Directly connected:  Directly connected: 
  • External USB unit (e.g. MP3 player)
  • External USB unit (e.g. MP3 player)
Via MOST communication:  Via MOST communication: 
  • Infotainment control module (ICM) (3/281)
  • Infotainment control module (ICM) (3/281)
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