Nice work, big difference between a mechanic and an auto technician as anyone can replace parts but few understand the function of parts replaced. Much respect sire.
I've seen a shorted sensor partially pull down the 5 volt reference voltage- but never completely to zero. Nice diagnostic work- and thanks for sharing your expertise.
I have seen power partially making contact with possible high resistance under load. A power source was reading 2.5 volts and I immediately knew there was something wrong with it somewhere. Ended up being that someone had stuck a wire with one of the fuse pin to power on key on a taxi meter. This wire was very stretched and pulling the fuse partially, the car would not start, this fuse was for the coil power lol.
5 volt reference short is not affected with the function of the PCM itself, if the main 12v was affected, then there would be no com to the computer itself, in this case the computer would be fried or the fuse protecting it would be blown.
@@hernanpinto7199 He used the test light, the test light draws current on its own, therefore he had to bypass from the battery positive terminal. Using the 5volt reference may not be enough to send a signal through.
So if i gather correctly what has occored was a no start. the orignal issue was a no start tied to the cam sensor. Owner replaced cam sensor with bad sensor and after that the parts cannon ensued. Hmmm , wild but i have pulled bad fuel pumps and alternators straight out of brand new packaging and only knew to replace twice because i test the part and diag instead of guess. I guess if your a guessing guy your gonna think you were wrong and try your next guess lol
It didnt get the correct reading for voltage and was not enough so the computer did not allow the engine to crank unless it was outputting the full voltage but because of the short to ground it wasnt a full voltage thru that circuit and did not let it crank over
Computer needs to see that signal, if it is shorted to ground it assumes it is bad and cannot use it. Needs to see a square wave, all sensors affected by that parallel wiring will not work. One bad sensor brings all sensors using the save ref signal. You'd need to find a diagram and start chasing.
Nice work, big difference between a mechanic and an auto technician as anyone can replace parts but few understand the function of parts replaced. Much respect sire.
Parts cannon blew up for sure on that one, great thought process! verry organized and entertaining content 💪
Legendary video and mechanic skills. Thanks for creating this content
I've seen a shorted sensor partially pull down the 5 volt reference voltage- but never completely to zero. Nice diagnostic work- and thanks for sharing your expertise.
I have seen power partially making contact with possible high resistance under load. A power source was reading 2.5 volts and I immediately knew there was something wrong with it somewhere. Ended up being that someone had stuck a wire with one of the fuse pin to power on key on a taxi meter. This wire was very stretched and pulling the fuse partially, the car would not start, this fuse was for the coil power lol.
Well done! Love the Verus D10!
Great video thanks brother. I like the diag steps and bam you got it. Keep up the great work see you in the next video thanks again brother
Nice job. True technician.
Very nice video I can't wait for the next one.
great diag procedure. thumbs up keep em coming
Great troubleshooting like a pro
And this is why having a scope is a good thing
Wish you would give better direction, like wire connections and how you bypassed sensor
Well done Champ.
First class!
how did you still have communication with the pcm with no 5 volt ref
5 volt reference short is not affected with the function of the PCM itself, if the main 12v was affected, then there would be no com to the computer itself, in this case the computer would be fried or the fuse protecting it would be blown.
So I have to ask how did you bypass the camshaft sensor?
How did you bypass the cam sensor?
Awesome brother
Why a wiring diagram when the verus on the scope shows all needed info for backprobing
That was a great diag!
How did you do the bypass?
Im assuming he went from the 5v ref wire to the grnd wire on the cam position sensor.
@@hernanpinto7199 He used the test light, the test light draws current on its own, therefore he had to bypass from the battery positive terminal. Using the 5volt reference may not be enough to send a signal through.
So from the battery terminal to signal wire using 12 cold instead of 5 volt
good job
So if i gather correctly what has occored was a no start. the orignal issue was a no start tied to the cam sensor. Owner replaced cam sensor with bad sensor and after that the parts cannon ensued. Hmmm , wild but i have pulled bad fuel pumps and alternators straight out of brand new packaging and only knew to replace twice because i test the part and diag instead of guess. I guess if your a guessing guy your gonna think you were wrong and try your next guess lol
How was the Cam sensor bringing down the 5v reference for the Crank sensor?
The sensor was internally shorted between 5V and ground. All of the sensors must use the same 5V source wired in parallel.
It didnt get the correct reading for voltage and was not enough so the computer did not allow the engine to crank unless it was outputting the full voltage but because of the short to ground it wasnt a full voltage thru that circuit and did not let it crank over
Computer needs to see that signal, if it is shorted to ground it assumes it is bad and cannot use it. Needs to see a square wave, all sensors affected by that parallel wiring will not work. One bad sensor brings all sensors using the save ref signal. You'd need to find a diagram and start chasing.
@@scientist100 my dad had the same problem with the Christmas tree lights every year!!
🤯
Good thought process but wire piercing is hack type shit
Ayuda. Espaňol plis
Que necesitas primo
Ye been good if u showed the bypass