Toyota 89663-21141 (2).bin Firmware
Catalog reference for Toyota firmware 89663-21141 (2).bin and calibration identifier 89663-21141.
89663-21141 (2).bin is a Toyota firmware file associated with calibration identifier 89663-21141. The related catalog entry lists the same identifier without a vehicle model, controller designation or functional description.
The 89663 part-number family is associated with Toyota engine-control software calibrations. That makes an engine control module association plausible, but the available catalog information does not establish the exact application or what this particular calibration controls. The (2) suffix in the filename does not, by itself, identify a stock or modified variant.