I am 73 years old and I can not believe that I have never heard GROUND explained so perfectly . now that I think back on it . I have been life long member of the United Association, and the IBEW. Retired and still learning , it feels good. Thank You
After watching this I’d like to expand on my question or understanding. Please correct me if I’m wrong in saying this. That ground signal wire actually does have current flowing through it because for a transistor to switch on the base wire has to have current to “open the gate” it’s just a pathway to ground for the signal? I definitely already understood that ground didn’t carry anything, that’s where my confusion came from was if the base wire was “signal ground” and it isn’t carrying anything how did it allow the transistor to switch on.
ErictheCarGuy was right about Realfixesrealfast 👍 QUICK-WITTED Realfixesrealfast My Mentor Realfixesrealfast From Nick Ayivor from London England UK 🇬🇧 ⏰️ 05:33am
Riddle me this ..a 207 peugeot GTI has 3.3 volts(should be 5 volts) out of the 2 wire coolant temp sensor plug (both wire run back to ECU Earth and signal wire, earth is fine 12 volts at battery positive) now if the volt meter probe from the sensor plug is put on positive side of battery i get 8.8 volts ? 3.3 volts to negative using the same probe swaped the ecu from an other running car and get the same voltages , wire were inspected back to the ECU plug no shorts what so ever car runs perfect when hot and NO engine lights , car backfires and stalls when cold but after keeping it running till hot it runs like a swiss pocket watch , Feed back from some where else a bad earth ??
Interesting, here are my thoughts. 2 wire CTS , 1 wire is 5 volt ref, other wire is signal to ecu, ground come from being screwed into the block. CTS is input for ecu fuel mixture. your stall & backfire may be from the ecu adjusting for a hoy or cold engine when it is actually the opposite. Check your engine grounds.
A simpler way to ask or expand on my question, it was my understanding that for a transistor to be switched on it required a certain amount of current to flow through the base. What is actually happening on that signal wire from the PCM to the base, is there current flowing through it to activate the transistor?
