Toyota Firmware 89663-20262: Calibration Catalog Reference
A concise reference to Toyota calibration identifier 89663-20262 and its control-module part-number family.
89663-20262 is a Toyota calibration identifier in the 89663 part-number family, which is associated with engine control module software. The complete identifier does not establish a specific vehicle application or the behavior of this individual calibration.
What the control module does
An engine control module uses sensor signals to manage functions such as fuel injection, ignition timing and emissions-related operation. Its calibration supplies the settings used to control those functions for a particular application. The 89663-20262 identifier alone does not show which settings this revision changed.