DTC B1865/65: Short in Front Passenger Side Knee Airbag Squib Circuit; DTC B1866/65: Open in Front Passenger Side Knee Airbag Squib Circuit; DTC B1867/65: Short to GND in Front Passenger Side Knee Airbag Squib Circuit; DTC B1868/65: Short to B+ in Front Passenger Side Knee Airbag Squib Circuit [08/2013 - ]: Wiring Diagram
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.