Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
System Overview: Signals
The table below summarizes the input signals to and output signals from the Integrated Audio Module (IAM). The signal types are divided into directly connected signals, bluetooth, 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 Bluetooth: | Via Bluetooth: |
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| Via MOST communication: | Via MOST communication: |
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Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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