DTC B1830/57 Short in Driver Side Curtain Shield Squib Circuit; DTC B1831/57 Open in Driver Side Curtain Shield Squib Circuit; DTC B1832/57 Short to GND in Driver Side Curtain Shield Squib Circuit; DTC B1833/57 Short to B+ in Driver Side Curtain Shield Squib Circuit: Wiring Diagram
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.