Toyota 89665-0C311 Engine Control Calibration
A catalog reference for Toyota 89665-0C311 firmware and its likely engine control module family.
89665-0C311 is a Toyota calibration identifier associated with the engine control module (ECM) part-number family. An ECM manages engine operation by processing sensor signals and controlling functions such as fuel delivery and ignition timing. The exact vehicle application and the changes associated with this calibration are not established by the catalog filenames.
Catalog filenames
The entry appears as 89665-0C311.bin and 89665-0C311-.bin. Both filenames carry the same complete calibration identifier. The extra hyphen in the second filename does not identify a particular stock or modified feature.
The 89665 number family supports an engine-control association, but it does not establish which engine, vehicle model, or ECM hardware uses this exact file. The filenames also do not indicate whether either file changes engine behavior.