DTC P0120: Throttle Pedal Position Sensor/Switch "A" Circuit, DTC P0122: Throttle Pedal Position Sensor/Switch "A" Circuit Low Input, DTC P0123: Throttle Pedal Position Sensor/Switch "A" Circuit High Input: Wiring Diagram
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.