Section 114 (Engine Control System Self-Diagnostics - 4-CYL (Except PZEV)): Programming
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.
If the engine control module (ECM) is replaced and vehicle is equipped with an engine immobilizer system, the ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES - IMPORT article in GENERAL INFORMATION, or appropriate ENGINE IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT.