Toyota Firmware 89663-06C31
A catalog reference for Toyota firmware 89663-06C31 and its 89663-series calibration identifier.
89663-06C31 is a Toyota calibration identifier in the 89663 part-number family, which is associated with engine control module software. The controller uses calibration data to manage engine operation, including fuel delivery and ignition timing.
The complete identifier distinguishes this calibration from other entries in the same family. Its exact vehicle application and the changes associated with this revision are not established by the identifier alone.