Diagnosis VVT-i
This entry is in continuation of the theme about the analysis and Troubleshooting of the controller VVT-i (Crap Blog. Clutch VVT-i). Rather it is likely to prehistory. As first you need to diagnose damage, and then either deactivate, disassemble and repair.
At the time, I quite often had to answer questions about the performance VVT or VVTL, error P1349, P1693, etc.
Suddenly You have lit error advising to throw the engine (Check Engine), but nothing happens, the car as drove and drove, only with time comes the realization that it has become eat more fuel, and less torquey at midrange engine speeds.
Reading the error, let's say that You received one of the most common mistakes VVT is
P1346 or P1349
If P1349 — directly alludes to the defect in the VVT mechanism, the P1346 signals an error associated with the sensor determining the position of the camshaft, but anyway, can talk about violations in the work of the VVT, for example the wrong Phases timing.
Diagnosis.
You first need to determine Which of the nodes is to our brain.
Look at the main 3 mechanical failure
1. Filter valve VVT
A trivial mesh, but it can be a bit dirty )
and thereby cause improper operation of the VVT system
2. OCV VALVE, aka VVT Solenoid, aka valve VVT
Gentle enough device, representing a multiple port Solenoid perepuskajutsja oil in a particular channel (on the advance or the retard of the shaft).
Many people assume that it is working and operated according to the algorithm for "open" — "closed" — "keep the pressure"
Not quite. VVT valve is controlled by the ECU via PWM, and this is done continuously.
Here's how the valve in the engine
Although the valve-trivial, but working in agressivnoi environment often suffer from weaknesses, such as deformation of the sealing ring, resulting in the sticking of the stock, or the weakening of the return spring returns the valve to its original position.
So... diagnose.
Take 2 wires, preferably with connectors
Connected to the valve and to the battery, the second pole is not yet connected
Lock the second wire to the plus (without fanaticism, short circuits, you can burn the coil) and listen
Clicks goes here... If not... it clicks also, in principle, everything is clear.
However, a small correction. This valve may work fine when you remove it from the engine but not run in the engine.
This is due to the fact that the valve can only wedge in a heated state.
Therefore, before this test, run the engine up to operating temperature...
3. Clutch VVT
Let's say the valve is working. The next Test is the activation of the VVT controller. The same can be done without the presence of the dealer scanner.
Start the engine, and serves on the valve VVT voltage
If the engine is running, there is no change... the VVT controller is more dead than alive )
What was going to happen?
Applying voltage, you open the channel that causes the Clutch to the VVT in a position corresponding to the maximum overlap of the intake and exhaust valves.
At idle, the engine can't work with the overlap as it increases breakthrough of the exhaust gas in the intake. And the engine stalls.
If the oil pressure in the system enough mechanically, there's just nothing left to break.
Wiring, electronics, phase, timing and the camshaft position sensor.
when P1346 should check whether the exposed label phase timing and sensor performance, the continuity of the wiring if there is oxidation in the connectors... and the worst and hardly diagnosed is the ECU...
Waiting for comments, regarding the accessibility (or availability) of conveying of the material. Physically I can't describe all the faults of the system just from the head crashes ).
If you don't like, waiting for the angry comments :) PS all the videos are my personal and not "skopipastit" Internet
But not for that. I hope you already did all the checks that this topic is written. Che then I inclines to what cha coupling said come on Yes Dating
Erase here's a "pricella".
About results I will unsubscribe.
Thank you very much!, that helps!
Throw error completely.
Start the car, let it stand at idle for 20-30 minutes. Error lights?
last spring was made, it was pure...
well anyway carbolineum spilled it and dried.Put!
Hmm. Well Mer a crush, at the same time get the VVT filter, and clean it, it is usually under the bolt 14 is located near the valve VVT. Can help.
Lifehack
Error burned as bought? Or at some point appeared
burned I bought...
but before Sochi often .can spend the whole day not stay lit then re-lit.
Right now, steady on.And once a week go out
In General, this was clutch, she stalled the engine troit, were herded into service and ordered a clutch ( though all this happened over 500 km to St. Petersburg)
The question, is the clutch pull without having to remove the chain, ie remove the tensioner and put the clutch? Or the front cover will still have to remove? I know on Solaris change without removing
Listen to your noise. But other varikov if it is the clutch — no. I have a record of maintainability of the clutch... Yeah and Boo to put blasphemy. The same thing happens
Lifehack
Oh. check burning
and the noise at idle. this is likely already the clutch pass oil...
Today got to the mesh ( had to remove pump Gur) in General mesh was in good condition, the noise remained (
XS what to do next, the clutch change is expensive...
If it is the clutch — then Yes, the error current will burn, fuel to eat, and so nothing to worry about.
And if you do not clutch. You need to find out what
the type of noise varies, but the clutch is mostly hot and rumbles, as the oil is less viscous
Oh. check burning
and the noise at idle. this is likely already the clutch pass oil...
At idle sometimes there is a noise, thought chain, removed the valve cover, tensioner, rules and chain rules. Check burns, bug р1346
The filter valve under the bolt under the valve usually.
But most of the problems either by valve or clutch
Great record! try to clean the Filter valve VVT, I realized that he somewhere outside?
Excellent article, recently put the border vc731 and now see the error 1349... there was a problem with the valve broken off the contacts under the chip, but it is now cured solder and epoxy. However the problem persists, tomorrow I will test everything else and your article inspired just.
stepan939
Yes, v6.all changed and the sensors of the camshaft and vvti.all subject to change.and tell me what the pressure should be and how to check it.through the filter or the valve vvti
I РХ330 and also upon reaching the operating temperature the error Р0021. Wanted to know how you solved this problem?
The filter with the valve in the trunk are. So it makes no difference. pressure should not fall further from what is specified in the manual. At idle and revs.
Usually at idle, about 1 ATM, at 2000 rpm, 2-3 ATM. 2 ATM serviceable clutch works without problems
Yes, v6.all changed and the sensors of the camshaft and vvti.all subject to change.and tell me what the pressure should be and how to check it.through the filter or the valve vvti
the motor is what ? V6? and the error only on one head?
for starters, you can be enjoyed to replace the valve seats VVT, if not change. to swap the position sensors of the camshaft. if again will not change. and the error will burn in the same head.
not to spend the money on a clutch, you can check the oil pressure in the head on the twentieth and rpm.
But the fact that the coupling and valve VVT can work on the cold but not run hot — it's business as usual. as the gaps change, the oil viscosity changes
good day!I had a Highlander error Р0021!problemsa only at warm to cold is not seen !mesh wash sensors vvti sin Changed the clutch!can faced with this error!
damn... wrote, wrote, and lost all my message.
motor with shut off valve VVT will work with the power loss but troit should not.
from all discussed above... I think that much motor eats oil, and if so, you should check the plugs on the subject of crap, and it is better to change. troit is likely to cease.
well, not like two moment warning light for oil pressure illuminates when the pressure is less than 0.3... and I believe there is no crowding, that is, the motor is not that time without oil worked is bad
the second "Shoe Polish" in the coupler and filter the mantle — says much about filthy malacanang... it's too bad and washes is one of the reasons for not working.
if instituted, at an operating valve to supply voltage and nothing happens. either there is no pressure in the system or the clutch is faulty
Good day! thank You for the article, everything is clear and easy to understand. Can podcasti in such a situation. 30 Camry 2.4, 2 az fe. probes 340к, after a long trip (went to Estonia ) lit up the lamp of oil level. flushed Toyota 5 30. But just in case, bought local 10 of 40 ( Estonian ). then flushed it where the liter and a half. On the way back the car began to lose power, stopped for gas and saw that the engine shakes as if troit. Slowly drove home about 150 km away. looked up the error on the vvti. The valve was completely non-functional, it's stuck. Changed to a new one, disassembled muppu vvi. She didn't move, everything inside was in a solid mass type of Shoe Polish. Cleaned the clutch and put in place. Removed the mesh. In the same way was completely clogged. Changed. At the moment the car is bad running at idle, which is the same speed and trying to stall at traffic lights. Tried to watch the power valve using a test lamp, not a routine comes some power, after the plant is powered and then not at all. start the car with the included connector into the old valve, it just does not work from the connector, Although it just cleaned and it runs directly from the battery. That is, the valve does not work on the running machine. Submitted, as you wrote, 12 V power supply to the valve in a running car. No change occurs. Yesterday I checked the position sensor rasprodala. He is a worker. In General, all head broke, the car is worth and without it, very sad ) and one more question, if you can turn the valve and the clutch, the car should work normally with some loss of power, or the same will be troit ?
like what ? get him on a routine of the internal combustion engine? no, of course, there is the vapor pressure of atmospheres already at small momentum
The valve can be checked? From its seats the oil will not splash while working the engine?
Could you tell me the heated valve can operate at half seccheck weak and hear the bad?
Vremini kind of day! Help solve the problem! Was the lucky winner of the Mazda name to motor ZL 130 ka, after bought got Tokaj problem with a quiet ride all right but with a sharp press on the gas pedal the car chokes and stalls when you release, primal injector replaced the fuel pump with filtre and mesh prokladka the inlet of the collector, candle filter, rounded up to the diagnostics there are no errors. One day:-) podehal to the store did not turn off and sat waiting for his simeystvo, all normal, waited turned back, and the car nacela not stably operate the speed go from 200 to 800 and the burns light oil, thought a glitch. But there she stopped to pull behaves like a vegetable, threw off the clamps did not help went to the diagnostics said something mechanical drove to the service station checked the label and so they say it's something with the electrics in General football! Read the forums anyway-was talking about the air suction, I don't have it fixed. But the car in a hill going no more than 30 km and it is a acceleration! Read about the VVT sensor on the wound serves 12, it stalled, how can I check the clutch I do not know, but when I removed the lid it was seen what was left of the trail like she turns and stands in one place, my head explodes what to do! Compression measured with 12 points, 5 points of fuel, plugs are brand new but twisted are they black like I'm on oil clean ride. Help Board! Thanks in advance!
Good afternoon. The car was a bad start and sometimes stall at junctions. Today I removed the chip with the valve VVT I at the got zero response. Took the valve connected back to the chip turned on the ignition the valve operates. a reaction that is turned on or off there. Also removed the chip from the valve when you turn off the ignition and got zero response as with the removed chip or stuck in place start the same way.checked the power to it plus there is a constant and does not respond to the operation of the motor at 1000 rpm. or 3000-4000 that would be. and yet there was a strong noise the first few seconds of engine. what could it be? please help me.
Hello, please help clutch VVT-i 1zz fe ceases to work when the motor temperature rises to 58-60 degrees, 've tried everything. Everything changed the clutch valve, but it started after replacing the timing chain.
Hello, please tell me auto 120 Prado 4.0 1gr - fe mileage 200tys. the problem is the following: pomeneny timing chain, new valve, new filter .periodically popping up error р0012 and р0022 on the right head while the motor works fine as before the chain replacement the only that changed was gone preprecevanje chain cold no power loss is not felt .err on the clutch, when you disconnect the valves from the computer will not restart. engine runs smooth, clutch can not be activated as needed or jammed but the motor as not to influence ?
If I'm not mistaken, there should be no DC voltage. It is governed by the ECU depending on accelerator position.
Thanks for the article. The benefits of reading a LOT!
Have 4а91 mmc mivec 1.5 l colt 6. Warmed the car, rolled on the bottom are all bad, the failures, the loss of power to about 3000 m., jerks when the transmission shifts. Turned the engine off took off the chip with a valve and the car went well (compared to how it went the last 6 months). the valve is cleaned, when applying 12 V. on a cold works well, when wound the motor on the chip 12 V is constantly supplied. Tomorrow going to measure the oil pressure and check operation of valve on hot.
question — if oil pressure is normal (tell me what is the norm in the XX and let's say at 3000, etc ) how to eliminate a clogged oil passage?
Denis38rus24
Hi all. This problem. Supply power to the valve vvti 12volt. On not heated-up engine stalls( as expected), but when the engine reaches operating temperature - no emotions( runs and does not stall. Out vvti not working. There are no errors, works well, but eats a lot of gasoline. What could be the reason?
Hi. I found the problem?
before motyul 5W30был flooded.never failed, even in the cold. then filled it with 10W40 Mobil started to stall but only on the cold. and so the problem is not found
Denis38rus24
Hi all. This problem. Supply power to the valve vvti 12volt. On not heated-up engine stalls( as expected), but when the engine reaches operating temperature - no emotions( runs and does not stall. Out vvti not working. There are no errors, works well, but eats a lot of gasoline. What could be the reason?
The oil pressure is not enough for hot, change the oil for good...
Yes way. Two sensors a new set, nothing has changed. Well, the output coupler. Benz eats I have 18 liters. Don't know a lot or a little. All in one voice say that this is normal. But for me so much.
Denis38rus24
Hi all. This problem. Supply power to the valve vvti 12volt. On not heated-up engine stalls( as expected), but when the engine reaches operating temperature - no emotions( runs and does not stall. Out vvti not working. There are no errors, works well, but eats a lot of gasoline. What could be the reason?
I also have this problem on cold throw with Akuma on the valve the car stalls, and hot no, the clutch skiff or something? You found the answer to this?
Denis38rus24
Hi all. This problem. Supply power to the valve vvti 12volt. On not heated-up engine stalls( as expected), but when the engine reaches operating temperature - no emotions( runs and does not stall. Out vvti not working. There are no errors, works well, but eats a lot of gasoline. What could be the reason?
similar situation, on a hot no stalls, no errors, maybe it should
Oil is not just pressure, it direct the fountain from there. Calling an electrician did all the rules. Timing menyanyi 10 thousand ago.
oil is not supplied to the valve vvti and accordingly in the clutch. remove the valve, take a rag and close the hole where the valve of witi turn the engine oil must be pressure . either the chain is broken . I prozvanivatsya from the brain to the valve
Hi all. This problem. Supply power to the valve vvti 12volt. On not heated-up engine stalls( as expected), but when the engine reaches operating temperature - no emotions( runs and does not stall. Out vvti not working. There are no errors, works well, but eats a lot of gasoline. What could be the reason?
Hi.Tell me, when checking the clutch VVT-i what should be the temperature of the engine?
Good day. Please tell me in this situation.
The error occurred 1656 open circuit of calapan VVTI engine 1zz-fe, short circuit or the ECU. What is not understandable theme through the valve, the oil began to pressurize. I took it apart all the oil wiped off and collected. Hooked wiped the error BK mul'titroniks. She is popping up again. Now began to erase Launcher. Several times erased now it falls out all the time. Looked the roller Tube about the check valve on the engine, the 1nz. The boys Ostrom watched the signal. Then a multimeter. On the twentieth multimeter they 4,26 In tenure shown between the terminals of the connector connected to the valve. Also a neighbor 1nz same song for XX. Ask someone with the same car as I have to check the voltage it is 2.9 V.
I have zero. Climbed to the ECU there according to the diagram pin 1 & 2, 23 and 24 of the connector is the OCV - and OCV+. I also have zero shows.
I read comments about the fact that it is impossible like a multimeter to check the voltage. Is it really so? Just why is that on other machines the voltage is. Maybe just valve's fault and brain in emergency mode and naprugi just gone because of this. The brain I considered he was unharmed. No traces of burning are not present.
Lifehack
Diesel sound is working the clutch with a small oil pressure
How to check is there enough oil pressure?
Good afternoon. I 3grfse gs300 all works well. Consumption summer 12 winter 15. Any errors present. Now only rumbles when you start. If you can stand more than 2-3 hours and if less then no sound. How vvti tormented by pressure oil? Through the valve vvti or he can pass? If the second option is it possible to open it? )))
I read something on the Internet that the guy is also this error was beating maybe the clutch is stuck and maybe it was for the camshaft sensor or crankshaft
Good day, car Premio Toyota 1zz, after some time, burns check, error p1349, did kapitalka, put on labels, to capitali check is not burning, the valve is new, the clutch removed put from another machine where there were no errors, the same story, cleaned the mesh, not the test valve, on what to sin?!
My problem in error 1656 I decided burned two current resistor on the brain went to electrician.
The internal combustion engine 1 zz Coupling, the chain is a replacement chain error 59 , the voltage across valve no response was given, the valve clicks, got submitted the tension rod goes back and forth, changed the clutch for a new one, again check, again test vvti no reaction, only clicks, the motor does not stall, maybe it was the valve clicking and not work? And whether to buy a new valve? Or the clutch is not correctly I set?))
Upd. In short it was in the valve vvti, whom he had shifted and blocked the oil channels, a little turned and navalawala, now on the test stalls, the error was gone
Another thing, if the rpm is too low the oil pressure may not be enough to test vvti, stall will not be until ghazan slightly
wire from the computer goes, the Pinout 1jz I, unfortunately, do not tell, and different models may be different, look at the EWD for your car
Where do the wires on a chip VVT overlook if computer what the connectors look? 1jzge
Fliper
Hello!
Help to remove the error associated with VVT-i.
error code P0012. motor 1NZ-FE 1.5
replaced valve VVT on the new.(error in a couple of days re-lit)www.drive2.ru/l/10218909/
There is a note!
1.at what levels of the fuel tank error at the time of going out(maybe a coincidence)
2.The machine consumes a lot toplev winter -25 flow of 20 liters per hundred(warm up long ezdiyu short distances).
3.Jerks on not the engine is warm (summer winter no difference)
Help GIVE ADVICE!
Hi! solved the problem? I have the same thing, popped Р0012 .
Hello, what could be the problem if lit p1346 error and the machine began to twitch ? Valve vvti, replaced with mesh washed, stays the chain look with a clutch?
Hello. And if the two multi how to check them. When the engine is running to supply voltage to one valve or both?
Of course, if there is any difference on what + kidding on some. Or see where your wires to the chip?
Lifehack
If there is an awareness of how the mechanism works, sometimes does not need expensive tools and scanners, will last only 2 wires
On the clutch there is a difference of phasing + —
Hello guys Machine Mark 2 100, engine: 1jz-gte vvti, in General, first the problem was with the rpm was low then high, changed the plugs, changed the gas valve cardboard, cleaned CHH, completely removed the throttle cleaned, removed vvti has 12v applied to it, cleaned the bypass, idle came back, went to hand out sideways nooooooo...
On a cold morning started it and felt like the car Bud Percival at first did not pay attention, because it was not very noticeable, the whole day he skated, the next day the symptoms worsened and now the Machine fart troit, like the lighting passes, made a diagnosis, 2-error "22, 33". Went to the electrician checked the armor wires are all operational, said test coil, the benefit is that all travel on one of these machines from a friend took the reel and began to change the place, summary, the problem is not them, but something else, asking for your help and advice. For clarity as troit motor can provide a video.
Povarenk
No, it can't overcome this problem. Try to flush the engine. The only thing left.
Well?
Again checked the applied voltage to the valve and unfortunately the machine is not stalled, apparently I have not checked on warm engine.decided to remove and wash the clutch, maybe the weekend will do
Povarenk
Hello! Please, after buying the car, replaced the oil rinse on synthetics 5w30 (1zz motor) . After driving 50km on the highway lit up the check errors on the distribution of phases at the coupling, and the vvti controller, as explained by the diagnostician. He also checked the valve supply 12w for the valve clicks but does not stall and the sound does not change. Next clutch replacement on a contract. Talking was checked by the method of the compressor. The result of the test is not given. Removed the pan, cleaned musopriani. Changed the valve on a contract that ran oil from the valve (Felts compactor Felts poop hand curves) of the result on the test again. To be sure the valve is the brain does has changed to a new double (sata). The chain rattles, turns on the cold 1500. Hot 800-900. Please tell me what else it could be, broke the head. The oil pressure should be normal, as pressed with contract sensor is not enough.
Figured out problem?the situation is similar.what is interesting is that after popping up error supply voltage to the valve the car stalls
Thanks for the advice. Also I think that it is in pressure. Take a ride on a long washing, and the channel cleared
1. The clutch is most likely the VVT. Contracts in most cases the same bodies as yours was.
2. Oil pressure (clogged channels after flushing)
Hello! Please, after buying the car, replaced the oil rinse on synthetics 5w30 (1zz motor) . After driving 50km on the highway lit up the check errors on the distribution of phases at the coupling, and the vvti controller, as explained by the diagnostician. He also checked the valve supply 12w for the valve clicks but does not stall and the sound does not change. Next clutch replacement on a contract. Talking was checked by the method of the compressor. The result of the test is not given. Removed the pan, cleaned musopriani. Changed the valve on a contract that ran oil from the valve (Felts compactor Felts poop hand curves) of the result on the test again. To be sure the valve is the brain does has changed to a new double (sata). The chain rattles, turns on the cold 1500. Hot 800-900. Please tell me what else it could be, broke the head. The oil pressure should be normal, as pressed with contract sensor is not enough.
At small revs the VVT system exhibited minimal valve overlap. So VVT hardly affect your problem.
I would be looking in the direction of the MAF. And for a start the Throttle cleaned.
Hello. Thanks for the article.
Recently I had to attend to the problem of engine vibration. At the beginning of the movement (starting off, especially uphill) the revs drop sharply. If time does not Rev up or a little bit sharper, letting the clutch out to stall it. While there is a strong vibration motor. Upon further acceleration and in the process of moving this is not observed. Vibration appears when the revs drop below 500. At idle (about 800-900) the vibration is gone.
Engine – 1zz analogue. Oil, spark plugs, clutch was normal. Machine stitched under the Euro-2. Jora petrol't noticed, the exhaust is normal.
Tried to start with shut off valve VVT. Feels engine is not so much sausage. But I could be wrong, as experimented in the yard, rode on the strength of 1 M.
Question – can the above symptoms be the signs of a faulty valve or coupling VVT? Or where to dig further?
Hello, great article, have read, I have this problem... sometimes lights up the check, if you turn off the ignition and subsequent charging and disappears for a while then does not appear(a few day), then lights up again... on the diagnosis shows fault vvt-i and incorrectly work the camshaft sensor, with the engine running if serves 12V to the valve vvt-i heard the clicks that is the stock goes, but the engine is not reflected, in what could be the problem? Engine 1jz ge
Hello, the question is, applied voltage on the valve vvt can only hear the crackling, the motor is not stalling, also worked fine. took off valve filed naprugu, the stock goes to cover the channels, the motor 3s-ge beams. Again read all that when dying clutch, works like a diesel, I do not exist, prompt where to dig please
Tell me valve vvt works threw a chip light bulb, raise the speed lamp does not illuminate, ie no voltage at valve, where is it?!
"Pulled" or rang? Try a known-working brain from the same cars from friends to ask
Hi all. I okozalos in a deadlock, in which himself and drove )))
I got the same I article about filter+valve vvt-i And I decided to clean !
I drive Vista Ardeo 1998.1 ZZ-FE. So I removed the valve, cleaned, checked-when applying 12V clicks. The filter is cleaned. Decided to test power to the valve(stuck in the trick light bulb -incl.the ignition is dimly lit, made-is dimly lit, after 10 seconds bright on 2s.and again, dimly, -for the speed and temperature of engine.non-responsive.
Second car-wife's Yaris 1999.1 SZ-FE the same steps, BUT do NOT have the POWER TO the VALVE VVT-I ! Not to cold not to hot, your TEMP SENSOR.the Council checked the elm shows from 18 to 90 S. Ie the lamp is plugged into the terminal block vvt-i is not lit and never like ! Posting pulled by the way-no open circuit(from terminal block to the spit)
And by the way if you disable the check's on fire! P1656.
Then dump and not burn!
Where to dig -is not clear !
Maybe there are some thoughts!
Lifehack
I have no problem with VVT )
Hello, how to check the clutch is working or not, I've got a compressor in it serving the air she wants to povarachivaetsya, and can't.
If the valve VVTI pass oil into the connector, does that mean he is bust, or, in principle, the presence of oil in the connector (on the pins) can cause it to not work correctly?