Before you buy a scanner, check to see if it has mode 06 capabilities. This will help idenity the compoment at falt ad if it is with in the factory range setting. I have a Snap-on Vantage pro and I have been getting informational videos and work books from AVI that have helped me understand how these new engine diagonastic systems work.

You can reach Team AVI at www.auto-video.com or 1-800 718-7246 ask for Marsha.

Best Regards
Bob Geco