Thanks for the quick answer, already got a USB connected DMM that lets me do all that, and graph it nicely on the PC, but its not often its needed, mostly for faulty temperature sensors and such, that can show a "dip" in resistance at a certain temperature.
And I'm not sure if the SnapOn can do canbus/FlexRay.
The picoscope is nice, but expensive and is used with a PC, which we all know breaks down when you need it the most. (Atleast that's what happens alot on my diagnostic PC at work) and the original diagnostic DSO is having a hard time to even trigger on a canbus signal, and changes from 2V/d to 0.5V/d, so either the signals are small and hard to see or goes outside the window.