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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Modules And Components - Design And Function - 1 Of 5 >> Audio Module (AUD) (2008-2011) >> System Overview >> Signals
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System Overview: Signals

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:  Directly connected: 
  • Power supply
  • Ground
  • Headphone panel (control signal) (16/111)
  • Loudspeaker left front (16/4, 16/55)
  • Loudspeaker right front (16/3, 16/56)
  • Loudspeaker left rear (16/6, 16/136)
  • Loudspeaker right rear (16/5, 16/137)
  • Center loudspeaker (16/26) (option).
  • Headphone panel (16/111)
Via MOST communication:  (ring network) Via MOST communication:  (ring network)
  • Infotainment control module (ICM) (3/281), main control module
  • Integrated audio module (IAM) (16/1)
  • Phone module (PHM) (16/60).
  • Bluetooth phone module (BPM) (16/147)
  • Multimedia module (MMM) (16/108)
  • Infotainment control module (ICM) (3/281), main control module
  • Multimedia module (MMM) (16/108)
Fig 1: Identifying Input Signals And Output Signals From Audio Module
GLL153753Courtesy of VOLVO CARS CORPORATION