DTC B1773: Belt Tension Sensor Circuit Malfunction; DTC B1776: Seat Belt Tension Sensor Power Source Circuit Malfunction: Wiring Diagram

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Front Seat Outer Belt Assembly And Occupant Classification ECU - Wiring Diagram