Introduction to Pre-Scan and Post-Scan Functionality in Diagnostic Software
Since 2014, pre-scan and post-scan functionality have been built into Snap-on Diagnostic Software, serving as an essential part of the diagnostic process. The most profitable technicians and workshops understand the importance of starting with a pre-scan and ending with a post-scan for every vehicle. This approach helps reduce comebacks, which can be costly in terms of time and reputation damage.
Why Pre-Scan is Essential
A pre-scan using a Snap-on diagnostic tool performs a simultaneous code scan across both OBD-II and OEM protocols. This comprehensive scan ensures a complete and accurate diagnostic picture from the outset, eliminating the need to switch between menus or guess which systems to focus on. By checking both protocols, technicians can identify potential issues that might be overlooked if only one protocol is scanned.
Additionally, OBD-II Permanent Codes provide valuable diagnostic information that can’t be cleared with a scan tool. These codes stay stored in the system for up to 400 days or until the vehicle completes two successful drive cycles without the fault returning. This feature helps preserve essential diagnostic information and reduces the risk of misdiagnosis.
Benefits of Pre-Scan
The layout of the pre-scan results is fast, straightforward, and precise, with each module in the vehicle individually assessed:
- Green = Module is present and functioning correctly
- Yellow = A module is present but has stored a Diagnostic Trouble Code (DTC)
- Grey = A module is not responding
- Not shown = The module is not used in the vehicle
This clear distinction prevents misdiagnosis and ensures no time is wasted chasing systems that aren’t there.
Fast-Track Intelligent Diagnostics
Once the pre-scan is complete, if any DTCs are found, the software displays a Diagnose button. Tap this and you’re taken directly to the Fast-Track Intelligent Diagnostics landing page. This patented workflow provides a targeted, vehicle-specific approach that combines complaint, cause, and correction on one page.
Diagnostic Health Scan
Alongside the pre- and post-scan, Snap-on Diagnostic Software offers the exclusive Diagnostic Health Scan functionality. This provides a comprehensive full system scan data, displayed in a customer-friendly report with an easy-to-understand overview that explains the vehicle’s condition and identifies potential issues in a simple way.
Conclusion
Comebacks are a significant problem in the automotive industry, often resulting from overlooked issues or missed steps in the diagnostic process. By starting with a pre-scan and following a structured workflow, technicians can reduce comebacks and increase customer satisfaction. With Snap-on Diagnostic Software, technicians have the tools and expertise to diagnose and repair vehicles with confidence. Learn more about the power of pre-scan and post-scan functionality Here
