The Mac Tools Repair Source Diagnostics is software on the ET7200 and ET6250 Diagnostic tools included in the purchase price of the tool. This software includes diagnostic coverage updates, software updates, and Repair Source. Repair Source offers vehicle service and repair information, including OEM service procedures for A/C and heater, engine, airbag, brake bleed, steering, suspension, starter, alternator, and timing belt; DTC troubleshooting (test conditions and diagrams and supporting tests); OE wiring diagrams; component location diagrams; computer relearn procedures, and more.