Toyota Firmware 89663-06A31 (2).bin
A catalog reference for Toyota firmware 89663-06A31, its calibration identifier and control-module family.
89663-06A31 (2).bin is a Toyota firmware catalog file associated with calibration identifier 89663-06A31. The related catalog entry uses the same identifier without the file suffix.
Control-module association
The Toyota 89663 part-number family is commonly associated with engine control module software. On that basis, this file is tentatively associated with engine management, the system that coordinates functions such as fuel delivery and ignition timing. The full identifier alone does not establish the exact vehicle application or the functions changed by this calibration.
The (2) in the filename distinguishes this file as named in the catalog. It does not by itself identify a stock or modified version, a performance feature, or a software revision.