Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
For wiring diagram, see DTC P2102: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW & DTC P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH . For diagnosis and repair, see Fig 1.