Toyota ECU Firmware SW#89663-60C00-A MOD_E2_sap_off.bin
A catalog overview of Toyota firmware 89663-60C00 and the modified SAP-off variant.
SW#89663-60C00-A MOD_E2_sap_off.bin is cataloged as a modified Toyota engine-control software file. Its sap_off label indicates a variant intended to disable the secondary air injection pump function. The related catalog identifier is 89663-60C00.
What the SAP-off label means
On vehicles equipped with secondary air injection, the engine control module manages a pump and associated valves that deliver fresh air into the exhaust during certain cold-start conditions. The added oxygen helps the catalytic converter reduce emissions while the exhaust system warms up.
The sap_off wording describes the modified file, not the stock calibration. It suggests that secondary air injection operation or its monitoring has been altered, but the filename alone does not establish the exact software changes.
Controller and identification
The 89663 part-number family is associated with Toyota engine-control calibrations. The complete identifier 89663-60C00 distinguishes this record from other files in that family, although the available catalog entry does not establish an exact vehicle application.
The MOD_E2 label identifies the file as a modified variant. It does not, by itself, explain any additional change or establish a revision history. Disabling an emissions-control function can affect emissions compliance and fault diagnosis.