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: |
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| Via MOST communication: | Via MOST communication: |
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