Toyota Yaris 1.5 Firmware 89663-52G31

Toyota firmware 89663-52G31 is cataloged for a Yaris 1.5 with the 1NZ-FE engine. The 89663 part-number family is associated with engine control calibrations, so this file is tentatively identified as engine control module software.

Engine control role

The engine control module uses sensor information to manage functions such as fuel injection and ignition timing. Those controls affect how the engine starts, idles and responds to the accelerator. The catalog filename does not establish which settings or behaviors are specific to the 89663-52G31 revision.

Catalog identification

The filename Yaris 1.5 1NZFE 89663-52G31.bin identifies the vehicle, engine and calibration number. It does not name a stock or modified variant, a model year or a specific ECU hardware number. The filename alone therefore does not establish compatibility with every Yaris fitted with a 1NZ-FE engine.