XC90 AWD V8-4.4L VIN 85 B8444S (2005)
The audio module (AUD) is an amplifier which is connected to the MOST network. It has the following functions:
to carry the sound signal transmitted on the MOST network out to the directly connected loudspeakers and to the headsets as analogue signals
to carry voice messages from the microphone, which is directly connected to the audio module (AUD), to the MOST network
to transmit requests from the headset panel, which is directly connected to the audio module (AUD), to the relevant control modules on the MOST
network to change to the next or the previous track or to change the sound source.
If a subwoofer module (SUB) is installed on the MOST network, the audio module (AUD) can process the incoming signal and transmit it to the
subwoofer module (SUB).
There are three versions of the audio module (AUD):