Toyota 89663-60652 MOD_E2_sap_off.bin Firmware
A catalog guide to Toyota 89663-60652 MOD_E2_sap_off.bin and its secondary air injection modification label.
SW#89663-60652- MOD_E2_sap_off.bin is a modified Toyota engine-control calibration labeled for secondary air injection, often called SAP. The sap_off label indicates that the file is intended to disable secondary air pump-related operation or diagnostics. The filename alone does not establish exactly which functions or fault checks have been changed.
What the SAP system does
Secondary air injection supplies fresh air to the exhaust after a cold start. This helps reduce emissions while the exhaust and catalytic converters warm up. The engine control module coordinates the system with engine operating conditions and monitors it for faults.
A calibration labeled sap_off is therefore associated with a change to an emissions-control function, rather than a general description of how the vehicle drives. Its precise effect on pump commands, valves and diagnostic trouble codes cannot be determined from the catalog name.
Calibration and variant identifiers
The base identifier 89663-60652 belongs to Toyota's engine-control software part-number family. The longer filename adds MOD_E2_sap_off, distinguishing this modified variant from the base catalog entry. The meaning of E2 is not established by the available name.
The identifier does not by itself confirm a specific vehicle application or compatibility with another engine controller.