Toyota 89665-60131 Engine ECU Firmware
A catalog reference for Toyota calibration 89665-60131 and its engine ECU software family.
89665-60131 is a Toyota engine control calibration identifier in the 89665 part-number family. This family is associated with engine ECU software, which governs engine operation through functions such as fuel delivery and ignition timing.
The identifier alone does not establish the exact vehicle application or the changes made in this calibration. It should be distinguished from other 89665 calibrations rather than matched by prefix alone.