DTC 12/B0103: Short To Battery In Driver-Side Air Bag Squib Circuit: Description
WARNING: This page is about a different car, the 2002 Toyota Celica. However, it is still accessible from the selected car via links, so may be relevant.
The driver-side air bag squib circuits consists of the air bag sensor assembly, spiral cable and driver-side air bag module. The squib causes air bag to deploy when all deployment conditions are satisfied.