DTC 46/B0118: Short To Battery In Left-Side Air Bag Module Squib Circuit: Description
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
The side air bag module squib circuit consists of the air bag sensor assembly and side air bag module. The squib circuit causes the side air bag to deploy when deployment conditions are satisfied.