Toyota Auris 2SZ ECU Firmware 89663-52J01
Catalog details for Toyota Auris 2SZ engine ECU firmware 89663-52J01 and its associated 89661-52J00 controller.
89663-52J01 is a Toyota engine control calibration identifier associated in this catalog with the Auris 2SZ and engine ECU part number 89661-52J00. The listed file, 89661-52J00.bin, is a 736 KB main-flash image for a 76F0038GD microcontroller.
Engine management role
The engine ECU manages engine operation using inputs such as engine speed, temperature and driver throttle demand. Its software controls functions including fuel injection and ignition timing, helping the engine start, run and respond to the accelerator. The 2SZ designation identifies the engine family named for this entry.
The related identifiers serve different catalog roles: 89661-52J00 identifies the ECU part-number family, while 89663-52J01 identifies the associated calibration. The catalog does not establish what changed in this particular calibration revision.
File identification
The entry describes a main-flash image rather than a separate modification label. No stock or modified variant is specified. The Auris 2SZ association is useful for identification, but the listed numbers alone do not establish compatibility with every Auris, 2SZ engine or similarly numbered ECU.