Low Mileage Camry What Happened To You? Part 4 The Final Diag, Maybe...
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- Опубликовано: 20 окт 2024
- The Low Mileage Camry Saga Continues and in this episode we are finding out that after driving the vehicle we have some more issues that we didn't know about previously. Let's iron out the rest of the kinks in this car.
John Thornton LIN Bus Class automotivesemi...
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Jake. I'm really enjoying this saga. I have a degree in electronics. What a flashback. You need more subscribers. Awesome thought process. I'm a Indiana Certified Emissions Repair Technician.
John Thornton taught several classes in my Certifications Class.
As a matter of fact,he'll be here at our training night September 18th in Crown Point, Indiana
The circuit at the temperature sensor is called a voltage divider.
This is diagnostic Gold Jake. You clearly explain you approach in each step. Keep the videos coming
"Voltage divider", close enough. And the temp sensor will be an NTC (negative temperature coefficient) thermistor, meaning resistance decreases as temperature increases. As opposed to a PTC (positive temp. coeff.) sensor, which has increasing resistance for increasing temp. And yes, you are probably correct about "AD" meaning analog-digital converter.
I concur, this car is too new with little to no body damage to have this many bad modules and I bet there are more yet to be discovered... Another Great Video!
Just a theory , if you load the signal wire going the PCM with test light , data display should show duty cycle on the alternator and that can verify if the alternator or PCM is bad .
Not on a LIN Bus. This is data packets that should be transmitting not a pulse width modulation.
oh man!
what a saga...
not an easy line of work this diag stuff😏
Voltage divider circuit. Yeah, it looks like lightning or they hit some live power line or something.
I think you misread the service info re the temp sensor. The normal condition it was speaking about, was for the reading to equal the actual ambient temp. So in the flow chart you needed to go to NG rather than OK.
That's very possible. Sometimes it's hard to think when trying to do these videos lol
I was thinking the same thing. The -9 to 150 was showing what the normal range for the sensor to show but that the sensor should read what the actual ambient temperature is.
First time you crunk it...booyah~! Ima steal them words
Good thought process, Jake! Yep, you may be right - this may be the result of a lightning strike, and the parts tab just went way up. Very sad for customer.
agreed...either that or jump started it backwards
Maybe you can make a follow up video on how you deal the the customer on such complicated costly process
You get an approval for how ever much they are willing to spend to fix it and go from there.
Service info in another part scanning loader.. it's just a joke!! Terrible!!
Great vid Jake
Wish we could have seen the data on the scan tool when you opened the door
I have been a Toyota master tech for 13 years now, and I have never fixed a car with an A/C amplifier. The service manual often says install a known good part or replace part, and if the problem persists, replace this other part.....
That's the problem with all manufactures. They do not provide known good signals and voltages. With out that information one cannot determine if the circuit is working correctly or not. Manufactures are just killing themselves off.
I always watch sensor voltage as actual AAT is often calculated and many criteria has to be met before recalculating. But sometimes voltage PIDs aren't there and that sucks.
the problem with the ohm meter is you have no idea what in that pcm has parallel circuitry that will give you a reading. its ok to check wiring but hooked to any modules big nope
It is a data line so it should have high resistance to ground as I showed with the good car.
Omg. My girlfriend's dad used to call me richardcranium.
wow the car that keeps giving . very interesting with that lin indeed . surely a lighting strike or some new fangled emp strike the local kids are experimenting with 🤣🤣🤣🤣🤣 temp sensor is definitely an odd one . i have seen them before that i have unplugged checked it out plugged it back in drive cycle and it started working never to fail again or a least i could not get it to fail with numerous sleeps and drive cycles . man i can’t tell you how lucky i am i work in a plant so back to back tests have saved my ass many times 🤪🤪🤪 but has also burned me on occasions when it’s a common hardware or batch fault
29:10 Oooo, lucky for you! Your life is not boring with this kind of services... Joke a side, this kind of mistake/problemsls are very very hard to find and working within, it's multilayerd also very complicated, sometimes depends and affects one on other and you must have veryyyyyy good amount of time, knowledge and tools to handle it.
Imagine that "the front collision" cause the temp sensor short circuit. That took out the ECM which caused the alternator over voltage which then took out the other modules.
Even worse if this scenario happened the dealer diagnosis would be RIGHT !
If that happen I would only work on vehicles manufactured until 2015-2016 .
😂😂😂
I just had to warranty my phoenix scope... mine was sticking all my signals high. I always shut the app down and restart to rule out a weird signal on the scope. I have trust issues with my scope now after that cause it sent me down some bad rabbbit holes.
Like I commend last time, I have seen this before you are going to need a test car do not remove components of the test car and try on the good one try the suspect components ond the good car there is safeguards build into to prevent more damage. Good luck 👍
If its just a lin bus, the modules arent married. Pull the cars side by side. Hook the lin from the suspect car to the lin of the known good start both. See if the good car sets the commx code
You would also need to connect the batteries together. Without the power sources connected the LIN doesn't complete a circuit and is not seen.
@@autodiagyt 😉
24:56 Hi, where is this LIN bus link?
It only goes to the ecm.
I think they were referencing the John Thorton class
@@toddm80 oh crap I did forget that lol. I’ll get it added to the description in a little bit
@@Saykes1994 sorry I forgot to post the class in the description but it’s there now.
Florida car struck by Electric Eel-nado.
🌪♨
Grasias
34:45 You must consider that previously services can do that problems.
Holy cow. Some very high voltage, im talking over 300 to 3 thousand volts, high frequency arcing and sparking must have occured. Way to much damage. Semiconductors can tolerate some brief inverse voltages, while circuit boards, inputs and outputs can have protective resistive- capacitive filters to pull these spikes to the ground..i think this car suffered something like a lightning strike or a somebody crossed some wires in the high current charging system. Whenever you see a spark around a 12vdc system that spark can be a very high voltage although its duration may only be counted in milliseconds or microseconds of duration at peak voltage.
Maybe if it's a sprag clutch on a long deceleration as it overruns it could be not charging for long periods of time and the data will stall or look to be not operating right so thay give it a 17 minute window so the data doesn't trigger no charg codes low out
what happened wasn't the 1 wire gm alternator good enough don't understand why it NEEDED to change
Fuel economy happened lol
❤❤❤❤❤❤❤
Okay I really have to ask this..
How much time do you actually have wrapped up in this diagnosis? I really hope you're getting compensated.
I would have to go back and look over my tickets but taking in account that I was filming that adds alot of additional time but just as an estimated amount I’ve billed out around 15 hours. After my initial diag I told the customer he might have in the neighborhood of 5-7k in it parts and labor. In total my estimate was slightly over but pretty close.
The saga continues. I hope I didn’t jinx it in the first video when I wondered if it was a lightning strike. 😬
wow you get lot of car hit by lighting
Voltage divider
You’d need a decade box to go higher than 10k ohms.
If Luke Goss was a blue collar worker.
Maybe someone tried to jump start the car with jumper cables connected backwards.
It will almost always blow fuses and typically those modules will continue to blow fuses. They all look original and none have been blown.
👍🆒
Poor customer.
Today's toyota and lexus is just a brand nothing else
A Toyota POS ? 0:35
Two resistors in series with a load tapped off in between them is called a "voltage divider". The easiest way to explain it is to use two resistors with the same value in series connecting the positive and negative terminals of a DC source. All of the voltage would be dropped across the two resistors (say two 1000 ohm resistors) and between the two you'd find half the voltage. So if your source is a 12vdc battery you'd have 6 vdc to ground between two resistors (of the same resistance) in series
en.m.wikipedia.org/wiki/Voltage_divider
Need an exorcist 😢
And yes, must have been some major incident like a lightning strike. Perhaps the dealership that originally nuked the warranty on this car wasn't as dumb or crooked as you think.
Still shitty for how they voided it. Lying is never the way to do business.