Diagnosis & Repair
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
Replace ECM. ECM is located behind glove box and heater duct. See Figure. Using Toyota hand-held tester or scan tool, ensure DTCs are cleared from ECM. Turn ignition on and then use Toyota hand-held tester or scan tool to check for DTCs. If DTC P1129 exists, replace throttle body. See THROTTLE BODY under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.