DTC P1613: Secondary Air Injection Driver Malfunction; DTC P1614: Secondary Air Injection System Driver Bank 2 [08/2015 - 08/2017]: Wiring Diagram

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.