engine starting problem hino 500

[@biatrizmequemeque4184]

I really liked the video. I would like to take classes with you. First I would like to know what is the voltage of the current that enters the injection valve on these three wires of the Hino 500

[@njj111]

I have a Hino 300. Not starting after sitting for few days. Does the hand pump cause the reason as well?

[@biatrizmequemeque4184]

How to test the current in these three wires which are red, black and white. What is the current 12v, 24v or e but lower than these voltages