Toyota Firmware SW#89663-60731- MOD_E2_sapoff.bin
A catalog reference for Toyota firmware 89663-60731 and its modified SAP-off variant.
SW#89663-60731- MOD_E2_sapoff.bin is a modified Toyota firmware file labeled for secondary air injection, or SAP, to be switched off. In normal operation, secondary air injection supplies fresh air to the exhaust during certain cold starts to help the catalytic converter reach effective operating temperature and reduce emissions. The filename indicates an intended SAP-off modification, but does not establish exactly which controls or diagnostic checks were changed.
Calibration and variant labels
The identifier 89663-60731 belongs to a Toyota engine-control calibration number family, making an engine control module association likely. The available catalog entry does not identify a specific vehicle or engine application.
In SW#89663-60731- MOD_E2_sapoff.bin, MOD marks the file as a modified variant, while sapoff names the intended secondary-air function change. The meaning of E2 is not established by the catalog name. The related entry 89663-60731 identifies the calibration without those variant labels and does not, by itself, describe a modification.