Circuit/System Description
WARNING: This page is about a different car, the 2007 Saturn Outlook. However, it is still accessible from the selected car via links, so may be relevant.
The internal amplifier circuitry is monitored for temperature. If the amplifier senses an overheat condition higher than 95°C (203°F) of the internal circuitry, the amplifier will shut down until the internal circuitry cools below 90°C (194°F).