Scan Tool
An electronic device used to diagnose vehicle systems via onboard computers.
A scan tool connects to the vehicle's OBD-II port to read diagnostic trouble codes, monitor live data, and perform resets. Professional-grade tools can access manufacturer-specific modules, perform active tests, and reprogram ECUs. Regular diagnostic scans help identify issues early, saving repair costs. Keeping firmware updated ensures compatibility with modern vehicles. Scan tools are essential in modern automotive repair for efficient and accurate fault detection.
Related Diagnostic Guide
This topic is part of CHEPQ’s system-level diagnostic framework.
For a broader understanding of how this component is analyzed in real-world diagnostics, refer to the following guide:
Applying This Knowledge in Practice
The diagnostic principles discussed above are commonly applied in real-world vehicle diagnostics. To put this knowledge into practice, explore professional automotive diagnostic tools designed to support system testing, fault analysis, and troubleshooting across modern vehicles.