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Filament Monitor

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

The current to the respective pins passes through a shunt resistor in each circuit in TWICE. In the event of a filament failure, error information is sent to the bus. SID generates an acoustic alarm signal and displays REAR LIGHT FAILURE.

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