Toyota Tacoma 4.0 1GR-FE MT 4WD Firmware 89663-04512
Catalog details for Toyota Tacoma 89663-04512 engine-control firmware, listed for a 4.0-liter 1GR-FE with manual transmission and four-wheel drive.
89663-04512 is listed as engine-control firmware for a Toyota Tacoma with the 4.0-liter 1GR-FE engine, manual transmission and four-wheel drive. The 89663 part-number family is associated with Toyota engine control module calibrations. The complete identifier distinguishes this entry from other calibrations in that family.
What the engine-control firmware does
The engine control module uses calibration data to manage engine operation. Its functions generally include controlling fuel injection and ignition timing in response to sensor readings and driving conditions. These controls affect starting, drivability, emissions and engine response.
The Tacoma, engine, transmission and drivetrain details describe the catalog application for this file. They do not establish compatibility with every Tacoma that has the same configuration. The identifier alone also does not identify a specific change made in this calibration revision.