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Home >> Saab >> 2000 >> 9-3 Base, 4D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Air Bag Restraint Systems) >> Description & Operation >> Back-Up Power Supply

Back-Up Power Supply

WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Air bag control module contains 3 back-up power sources. Two of them enable front air bags to be deployed for minimum of 150 milliseconds after regular power supply has failed. The third back-up power source keeps processor going for 150 milliseconds after regular power source has failed.

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