Toyota Yaris 1.4 D-4D Firmware 1037362667.bin
Bosch EDC15C9 diesel engine firmware for the Toyota Yaris P10 1.4 D-4D, identified by ECU part number 89661-52250.
1037362667.bin is a diesel engine control firmware file cataloged for the Toyota Yaris P10 1.4L 8-valve D-4D, with the 1ND-TV engine rated at 55 kW (75 PS). It belongs to a Bosch EDC15C9 engine control unit identified by Bosch number 0281010768 and Toyota part number 89661-52250.
What the EDC15C9 firmware controls
The EDC15C9 is the engine control unit, or ECU, for the diesel injection system. Its software uses engine operating information to determine how much fuel to inject and when to inject it. Those decisions affect starting, idle quality, acceleration, fuel consumption and exhaust emissions.
The ECU also coordinates other engine-management functions, including air and emissions controls as equipped. The calibration contains the maps and operating limits that help the controller adapt fuel delivery to conditions such as engine speed, load and temperature.
Understanding this Yaris firmware entry
The filename 1037362667.bin identifies a binary firmware record associated with Toyota ECU part number 89661-52250. The full set of identifiers distinguishes this Yaris diesel entry from other Bosch EDC15C9 files that may serve different engines or calibrations.
No stock or modified variant label is included with this entry. The identifiers establish its catalog association, but they do not by themselves describe a particular performance modification or a change from an earlier software revision.
Diagnostic context
When investigating a Yaris D-4D engine-management issue, the ECU hardware and calibration identifiers provide useful context alongside fault codes and vehicle symptoms. Injection-related behavior can also be affected by sensors, wiring, fuel supply or mechanical condition, so the presence of this firmware identifier alone does not establish the cause of a fault.