On 2003+ VVT-i models, check the ETCS fuse power and the M-REL circuit. If the electronic throttle motor isn't getting dedicated power, the engine will only idle.
For exact wiring colors and voltage specifications across different model years (1998–2012), refer to these specialized technical guides: Full Pin Tables 2uzfe ecu pinout
Later models introduced Variable Valve Timing with intelligence (VVT-i). These ECUs typically use different connector shapes and pin configurations. They are more integrated with the vehicle's immobilizer system (Transponder ECU), making standalone swaps more difficult without aftermarket solutions like an AEM or Haltech standalone ECU or a "Immobilizer Delete" service. On 2003+ VVT-i models, check the ETCS fuse