Toyota 89663-52J31 Firmware for Yaris 1.5
A catalog reference for Toyota Yaris 1.5 1NZ-FE firmware 89663-52J31 and its likely engine-control role.
Toyota firmware 89663-52J31 is cataloged for a Yaris with the 1.5-liter 1NZ-FE engine. Its 89663 part-number family is associated with engine control software, making an engine control module application the likely classification.
Engine-control context
An engine control module manages fuel injection and ignition timing using engine operating conditions and sensor inputs. Its calibration helps determine how the engine runs during starting, acceleration and other driving conditions. Those are functions of the controller family, not confirmed changes specific to this revision.
The catalog filename, Yaris 1.5 1NZFE 89663-52J31.bin, identifies the vehicle, engine and calibration ID. It does not name a stock or modified variant, a special feature or a particular software change. The filename alone also does not establish model year, market or compatibility with another controller.