Toyota Firmware SW#89663-60C01-MOD_E2_sap_off.bin
A catalog reference for Toyota calibration 89663-60C01 and its E2 and secondary air pump off variant labels.
SW#89663-60C01-MOD_E2_sap_off.bin is a modified firmware file associated with Toyota calibration identifier 89663-60C01. The sap_off label indicates a variant intended to turn off a secondary air pump function. The related catalog entry 89663-60C01 identifies the underlying calibration but does not itself carry that modification label.
What the SAP label means
The secondary air injection system supplies fresh air to the exhaust during certain cold starts. This helps reduce emissions while the engine and exhaust aftertreatment warm up. A file labeled sap_off suggests that the modified software changes how that function operates or is monitored. The filename alone does not establish which controls or diagnostic checks were changed.
Calibration and variant identification
The 89663 part-number family is associated with Toyota engine control software. Its general role is to govern engine operation and emissions-related functions. The complete identifier 89663-60C01 distinguishes this calibration from other members of the family, but the available catalog information does not establish its exact vehicle or engine application.
MOD marks the named file as modified, while E2 is an additional variant label. Its precise meaning is not established by the catalog name. Neither label describes a documented Toyota revision or confirms what changes were made beyond the stated sap_off intent.