Toyota and Lexus SW#89663-60D00-A MOD_e2_sapoff.bin
A catalog guide to Toyota and Lexus calibration 89663-60D00 and the secondary air injection label in its modified filename.
SW#89663-60D00-A MOD_e2_sapoff.bin is cataloged as a modified Toyota or Lexus engine-control calibration. Its sapoff label indicates a secondary air pump off variant, associated with the secondary air injection system used to reduce emissions after a cold start.
What the secondary air system does
On equipped engines, the engine control module commands a pump and air-control valves to introduce fresh air into the exhaust during cold-start warm-up. The added oxygen helps reduce unburned exhaust pollutants while the catalytic converters reach operating temperature. The controller also monitors system operation and can record diagnostic trouble codes when it detects a fault.
The filename’s MOD marker identifies this file as modified rather than an explicitly stock calibration. The sapoff marker describes the intended secondary air pump off behavior. The filename alone does not establish exactly which commands or diagnostic checks were changed. The meaning of e2 is not established by the catalog entry.
Calibration identification
The related catalog entry 89663-60D00 identifies the calibration family without the modified-file labels. The available identifier does not establish a specific vehicle, engine, ECU hardware version or stock-file equivalent. Secondary air injection changes can affect emissions-system operation and regulatory compliance.