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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Lighting And Signaling Systems) >> Technical description >> Brake lights >> Filament monitor

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.

In TWICE, the current to the respective pins passes through two resistors. In the event of a filament failure fault, error information is sent to the bus. The SID generates an acoustic signal and displays BRAKE LIGHT FAILURE.

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