Auto Scan Auto Scan detects the systems supported by the vehicle and retrieves DTCs for all of these systems, providing a complete health check of your vehicle. Performing Auto Scan before and after repair could help in troubleshooting and validating repairs. Pre and post scan reports can allow you to record the condition of the vehicle before and after repair for comparison. To perform an Auto Scan, tap the Auto Scan button. The TopScan will start scanning all the systems supported by the vehicle, and DTC retrieval will be automatically proceeded. Results are displayed progressively as the systems are scanned. Figure 4-6 21