DTC U0073/49 Control Module Communication Bus Off; DTC U0105/41 Lost Communication with Fuel Injector Control Module; DTC U0121/42 Lost Communication with Anti-Lock Brake System (ABS) Control Module: Wiring Diagram
WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.