Hi Mazin, The voltages and current you expect to see vary a lot depending on the engine operating conditions. Also by make and model. Have a look in our guided tests (you can download the software at picoauto dot com / downloads). You are really using the scope waveforms to see whether a signal is there, how long the injectors are actuated, and whether there are any intermittent shorts to B- or B+ or any open circuits. Current is probably most important if you want to see whether the injector is being driven. Probably you would expect to see around 5 - 10 Amps peak most of the time but, as above, you can't really say "these are the tolerances for a good/bad injector". Your best approach if you suspect a fault with an individual injector is to compare with the others. If you see significant differences (when capturing the waveforms at exactly the same time) then you have a problem. Hope that helps.

@@pico_barney Thank you very much I will do that Yes very helpful thanks again