DTC B1805: Short in P Squib Circuit; DTC B1806: Open in P Squib Circuit; DTC B1807: Short in P Squib Circuit (to Ground); DTC B1808: Short in P Squib Circuit (to +B) [11/2018 - 08/2020]: Wiring Diagram

for HV Model: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

for Gasoline Model: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002