DTC P0748 Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1): Wiring Diagram
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pressure Control Solenoid Valve (SL1) - Wiring Diagram