DTC B1920: Short in Rear P/T Squib (RH) Circuit; DTC B1921: Open in Rear P/T Squib (RH) Circuit; DTC B1922: Short in Rear P/T Squib (RH) Circuit (to Ground); DTC B1923: Short in Rear P/T Squib (RH) Circuit (to +B) [08/2020 - ]: Wiring Diagram

w/o Selectable Force Limmiter: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

w/ Selectable Force Limmiter: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

w/o Front Seat Cushion Airbag: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002