Toyota Firmware 89663-0D402: Engine Control Calibration
Learn about Toyota calibration 89663-0D402 and its association with engine control module software.
89663-0D402 is a Toyota calibration identifier in the 89663 part-number family, which is associated with engine control module software. Its tentative association is with the engine control system rather than a separately identified vehicle feature.
The engine control module uses calibration data to manage engine operation, including fuel delivery and ignition timing. The identifier alone does not establish which engine or vehicle uses this calibration, or what changed in this particular revision.