Toyota Firmware 89663-26N74
A catalog reference for Toyota calibration identifier 89663-26N74 and its engine control module software family.
89663-26N74 is a Toyota engine control module calibration identifier. The 89663 part-number family is associated with software used by the engine control module, also called the engine control unit or ECU.
Engine control software manages functions such as fuel injection and ignition in response to operating conditions. The complete identifier 89663-26N74 distinguishes this calibration from other entries in the same family, but the identifier alone does not establish its exact vehicle application or the changes contained in this revision.