Toyota Yaris 1.4D 1ND-TV ECM Firmware 89663-02F31
Catalog details for Toyota firmware 89663-02F31, listed for the Yaris 1.4D with the 1ND-TV diesel engine and its engine-control module.
89663-02F31 is listed in the catalog for the Toyota Yaris 1.4D with the 1ND-TV diesel engine. The 89663 prefix identifies a Toyota engine-control-module calibration, rather than software for a body, braking, or multimedia system. The catalog filename does not specify a model year, market, or calibration variant, so the application should be understood as the listed Yaris diesel association rather than a universal fitment claim.
What the engine-control software does
The ECM manages engine operation by interpreting sensor signals and coordinating functions such as fuel injection, air and boost control, and emissions-related strategies. On the 1ND-TV, these controls determine how the engine responds to accelerator input, produces torque across its operating range, starts, and manages exhaust emissions. The calibration helps the engine operate within the hardware and emissions configuration for which it was developed.
In everyday driving, ECM control is reflected in starting behavior, idle quality, acceleration, and the way engine torque is delivered under changing load. If a calibration is suspected during diagnosis, technicians assess it alongside stored fault codes, live sensor data, wiring, fuel-system condition, and other mechanical causes. A firmware identifier alone does not establish that a particular drivability symptom is caused by the software.
What the catalog identifies—and what it does not
The filename Yaris 1.4D 1NDTV 89663-02F31.bin ties this record to the Yaris 1.4D and 1ND-TV engine. The separate filename 89663-02F31.bin repeats the calibration number without adding an application or variant label. Neither filename describes a stock-versus-modified version, a named performance change, or a specific revision purpose.
Accordingly, the available catalog information supports identifying 89663-02F31 as Yaris 1.4D 1ND-TV engine-control firmware, but it does not document what changed in this calibration compared with another ECM version. Exact compatibility depends on the vehicle’s full specification and the calibration requirements for its ECM. The number should be treated as a calibration identifier, not as evidence that it suits every Yaris diesel or 1ND-TV installation.