Toyota Corolla 1.6 1ZR-FE Firmware 89663-02482

89663-02482 is cataloged as engine-control firmware for a Toyota Corolla 1.6 with the 1ZR-FE engine. The engine control module uses calibration data to manage engine operation, including fuel delivery and ignition timing. Those controls affect how the engine starts, responds to the accelerator and runs under different loads.

What the ST1 E2 SV2 label means

The entry is named 89663-02482_ST1_E2 SV2 4000 p., while a related catalog entry carries the identifier 89663-02482 without those suffixes. The extended name indicates a labeled variant of the same calibration identifier.

ST1 commonly denotes a Stage 1 tuning variant, and E2 commonly refers to an emissions-related variant. The catalog name alone does not establish the precise changes made to this file. The meanings of SV2 and 4000 p. are not clear from the identifier, so they should not be treated as confirmed descriptions of a feature or engine setting.

Reading the calibration identifier

The 89663 number identifies the calibration entry rather than proving compatibility with every Corolla 1.6. The vehicle, engine and full identifier together provide the useful context for distinguishing this record from other Toyota firmware files. The module’s general engine-management role should also be kept separate from any tuning changes attributed specifically to the ST1 E2 SV2 variant.