The Guide to SNAP-ON DIAGNOSTIC CERTIFICATION MANUAL is intended to give your students the knowledge they need to more effectively use their Snap-On diagnostic tools. As vehicles have become more complex so have the tools used to diagnose them. While many automotive programs do a great job teaching the vehicle systems, few take the time to explain in detail the sophisticated diagnostic tools needed to diagnosis them. Current market research indicates that most technicians only use about 15% of their diagnostic tools' capabilities:, this manual, designed to accompany the Snap-On Diagnostic Certification Program, will aims to boost usage to 90%. The manual begins with a physical overview of each of the tools and explains the various ports, connectors, buttons and controls. In separate sections each tool's utility menu is fully explained and all customizable features are discussed so the user will have full control to make the tool their own. Finally, every aspect of the tool including the Scanner, Lab Scope, Component Test Meter, Troubleshooter, and all other options are explained in detail. This manual will greatly increase a student's employability and a technician's productivity when either is faced with a complex diagnostic situation.