Toyota_Yaris_1.4_D4D_2004_Turbo-Diesel___55.2KWKW_Bosch_0281011125__367150_B2C1.Stage1.bin: ECU Firmware
A guide to the Toyota Yaris 1.4 D-4D Stage 1 engine firmware identified by Bosch 0281011125 and calibration 367150 B2C1.
Toyota_Yaris_1.4_D4D_2004_Turbo-Diesel___55.2KWKW_Bosch_0281011125__367150_B2C1.Stage1.bin is cataloged as a Stage 1 engine-control firmware file for a 2004 Toyota Yaris 1.4 D-4D turbo-diesel. Its stated 55.2 kW figure corresponds to approximately 74 hp. The filename associates it with Bosch controller number 0281011125 and calibration identifiers 367150 B2C1.
What the engine controller does
The engine control unit manages diesel injection using information such as engine speed, driver demand and operating temperature. Its calibration helps determine how much fuel is injected and when, affecting power delivery, fuel consumption, emissions and engine operation. The controller also manages engine-related systems such as exhaust gas recirculation and monitors relevant sensors and actuators.
What Stage 1 means for this file
The Stage1 label identifies this as a modified variant rather than a file labeled as stock. Stage 1 commonly describes an engine calibration intended to change performance without naming major hardware modifications. In practice, changes to fueling or other engine-control settings can alter the way the car responds to the accelerator.
The filename does not specify which maps were changed, the resulting power or torque, or any supporting hardware requirements. The 55.2 kW figure identifies the cataloged application, not a verified output for the modified file.
Using the identifiers
The vehicle description, Bosch number and 367150_B2C1 together distinguish this record from other Yaris diesel calibrations. A shared engine name or similar controller number alone does not establish that another firmware file is equivalent. The label also does not document a particular drivability repair or a Toyota service revision.