DTC B1835/58 Short in Front Passenger Side Curtain Shield Squib Circuit; DTC B1836/58 Open in Front Passenger Side Curtain Shield Squib Circuit; DTC B1837/58 Short to GND in Front Passenger Side Curtain Shield Squib Circuit; DTC B1838/58 Short to B+ in Front Passenger 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.