Gasoline direct injection - injector voltage and current

The purpose of this test is to check the Gasoline Direct Injection (GDI) injector control voltage and current from an Engine Control Module (ECM).

[@joshclark6101]

Great video. I was just wondering about an attenuator, if it is necessary to use one when hooking up to the the power and also the ground side of injector circuit. Thanks alot

[@dr.mazinalrubayey6283]

Thanks for information
What is the voltage and current that need to work gdi injector safely?

[@pico_barney]

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.

[@dr.mazinalrubayey6283]

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

[@Charlie-dv7ev]

You didn't even talk about the waveforms. Which is which. How to analyze, etc.

[@bobkornbrust7138]

Working at Honda are scan tool test them it's simple and 100% accurate