Standby Power Supply: Description and Operation

NOTE: A seperate Backup Power Supply is only found on Early Model vehicles. Late Model vehicles use a Backup Power Supply which is integral to the Diagnostic Monitor.

Backup Power Supply
A backup power supply is included in the system to provide air bag firing circuit power if the battery or battery cables are damaged or cut very early in an accident before the sensors can close. The battery backup contains a 3300 uf, 25 V capacitor that takes approximately 15 minutes to discharge after the battery is disconnected.

WARNING: THE BACKUP POWER SUPPLY MUST BE DISCONNECTED BEFORE ANY AIR BAG SYSTEM COMPONENT IS SERVICED. OPERATION