Diagnosis & Repair

Replace ECM. ECM is located behind glove box. See Figure. Using Toyota hand-held tester or scan tool, ensure DTCs are cleared from ECM. Turn ignition on and then use 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.