1. Functional application Troubleshooting Read/clear Fault Code (DTC) and monitor sensor data (e.g. water temperature, oil pressure) in real time. Parametric programming Adjust parameters such as engine power, RPM limit, idle speed setting, etc. Data Logging Record engine operating data (e.g. fuel consumption, load) for analysis and preventive maintenance. 2. Precautions for use Compatibility: Make sure that the programming line model matches the engine model (e.g. QSB5.9, QSC8.3) and software version. Power Requirements: Some programming cables need to be connected to an external power supply or draw power from ECM to ensure a stable power supply. Operational Specifications: Power failure is strictly prohibited during programming, as this may result in damage to the ECM. It is recommended to operate after professional training to avoid miscorrection of parameters. for Cummins diesel engine ECU diagnostic programming cable,CM570 CM870 CM871 CM876 CM2150 CM2250 CM2880 programming and troubleshooting, for inline 6 inline 7 diagnostic tool,one year warranty