Toyota SW89663-0KP91 30KP9100 89661-0KU11 1KD-FTV Firmware
A catalog reference for Toyota 1KD-FTV engine-control firmware SW89663-0KP91, with calibration and ECU part-number details.
SW89663-0KP91 is associated with engine-control software for Toyota’s 1KD-FTV diesel engine. The catalog filename also identifies the software update as 30KP9100 and lists 89661-0KU11 as the spare part number. These details point to an engine control unit (ECU) application, although the exact vehicle and calibration changes are not established by the filename.
What the engine ECU controls
The 1KD-FTV is a common-rail diesel engine. Its ECU uses operating information such as engine speed, temperature and driver demand to manage fuel injection. That control affects starting, power delivery, fuel consumption and emissions. The ECU also monitors engine-related sensors and actuators for diagnostic faults.
Those are general functions of the controller family, not a list of changes confirmed for the 30KP9100 revision. The catalog name does not identify a particular drivability fix, emissions change or modified performance feature.
Reading the catalog identifier
The complete filename, SW89663-0KP91 swupg 30KP9100 spare 89661-0Ku11 1kd-ftv (1).EPR, brings together a software number in the 89663 family and a spare ECU number in the 89661 family. The related catalog entries list 89663-0KP91 and 89661-0KU11 separately.
The filename does not state a stock or modified variant label, vehicle model or model year. The shared engine designation alone is not enough to establish compatibility with another 1KD-FTV vehicle or ECU.