Toyota 89663-60C30 Firmware: 3UR-FE Engine Control and SAP-Off Variants
Explore Toyota 89663-60C30-B engine-control firmware for the 3UR-FE, including the catalog’s modified E2 and SAP-off labels.
Toyota 89663-60C30-B is engine-control firmware associated with the 3UR-FE V8. The related catalog filenames identify the URJ2 vehicle-code family and an ME2Fi7 controller designation. The software belongs to the engine ECU, which manages functions such as fuel delivery, ignition and emissions controls during vehicle operation.
The catalog identifies the firmware’s controller family and engine, but it does not establish an exact vehicle fitment or describe changes introduced by this calibration revision. The filename association with URJ2 is useful for distinguishing the entry from other Toyota firmware records, rather than as a complete compatibility list.
Stock and modified catalog variants
The file 76F0070 Main flash (992 KB) 89663-60C30-B.bin is identified as a main flash image. Other filenames pair 89663-60C30-B with 3URFE, 60G70 and ME2Fi7. These labels identify the engine and controller context for the catalog entry, although they do not specify individual calibration changes.
The catalog also lists 89663-60C30-B_MOD_E2.bin as a modified variant. Its MOD_E2 label does not explain what was changed. Separately, SW#89663-60C30-B MOD_E2_sapoff.bin carries a sapoff label, indicating a modification associated with switching off secondary air injection. The similarly named entry without the .bin extension carries the same variant label.
What secondary air injection does
Secondary air injection is an emissions function that supplies fresh air to the exhaust during conditions such as a cold start. The added oxygen helps the exhaust system reduce emissions as it warms up. A SAP-off label describes the intended modification to that function, not a feature that should be attributed to every file bearing 89663-60C30-B.
For diagnosis, the distinction matters: an engine ECU’s general responsibilities are broader than the specific changes named in a modified file. The catalog does not document the exact implementation of the SAP-off variant or the behavior of the MOD_E2 file.