DTC P0979 Shift Solenoid "C" Control Circuit Low (Shift Solenoid Valve S3); DTC P0980 Shift Solenoid "C" Control Circuit High (Shift Solenoid Valve S3): Wiring Diagram
WARNING: This page is about a different car, the 2008 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.