Toyota RAV4 89663-42411 Engine ECU Calibration
A catalog reference for Toyota RAV4 firmware 89663-42411 and its association with the 2.0-liter 1AZ-FE engine.
Toyota 89663-42411 is an engine control calibration associated in the catalog with a RAV4 equipped with the 2.0-liter 1AZ-FE gasoline engine. It belongs to the Toyota engine ECU software part-number family.
What the engine ECU controls
The engine ECU manages functions such as fuel injection and ignition timing using information from engine sensors. Its calibration helps the controller coordinate those functions as driving conditions change, affecting starting, idle and throttle response.
The catalog filename RAV4 2.0 1AZFE 89663-42411.bin identifies the vehicle, engine and calibration number. It does not name a modified variant or describe a particular change made by this revision. The filename associates the calibration with the 1AZ-FE RAV4, but does not establish a specific model year, market or ECU hardware match.