DTC C1252/52: Hydro-Booster Pump Motor Malfunction: Wiring Diagram
WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
Refer to DTC C1251/51 on DTC C1251/51: PUMP MOTOR IS LOCKED/OPEN CIRCUIT IN PUMP MOTOR GROUND .