CVT Transmission Pressure Tests
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- Опубликовано: 15 сен 2024
- CVT Transmission Pressure Tests
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The procedures presented here are specific to the Jatco Nissan Sentra CVT transmission. However, these procedures can be effected on any CVT, with the difference being the pressure ports change. Any service manual, will show you the proper ports for the CVT you're working on.
Your first tool of choice, is a high pressure gauge, or high pressure electronic transducer. You can also use an oscilloscope, or even better, a graphing multi meter to record the pressure waveforms. Finally, we'll also present a little known device, but with great usefulness. It is called, a duty cycle controller circuit. These duty cycle circuits are now sold at many electronic houses, and can be used to control any electrical solenoid. Most, but not all of them, have variable voltage settings. In our case, we'll use 12 volts.
Assuming you'll be using a pressure gauge, use the diagrams seen here, to connect the gauge. Start the engine, and raise the vehicle up in the air, using a shop lift. If not using a lift, do not go under the car with the engine on. Remember that each time we change to a different pressure port, we have to turn the engine off, since the ports are ... Get the whole story right here in this video... Enjoy...
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There are two ways to do diagnostics, procedural and symptomatic. In the past, often times when I saw a vehicle I would say, I've seen this before and it looks like that car a few months back. But, I know better, I continued with the proper steps in the diagnostic process, never skipping. Over the years, I knew if I do that, my diagnostic time is always shorter and precise. It may be longer on some vehicles, but overall procedural D is always on the money and shorted. THanks.
Yes Briansmobile1, but most of what I do is based on experimentation. Years ago I worked on a complex hydraulic system, non-car related, and did the same thing of using multiple pressure sensors to determine faulty solenoid. Then in the late 90's I started seeing and experimented with some CVT, I think they were from Honda and kept doing that to develop "Procedures". To me procedures are very important. I always practiced procedural diagnostics.
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hi, my 03 Honda civic hybrid flywheel went bad. so I got that replace. once the transmission got put back onto the car my car doesn't want to shift and it has a check engine light. any advice on the problem?
Most appreciated...Mandy.
1:11 hello I have a 2017 Nissan Altima and the computer didn’t throw a code but the LU PRS is 72. And my scanner shows it in red and the permitters are from 0-92. My question is , what does the LU in LU PRS stand for
Google it
Hi, i have nissan march cvt k13 2012model, and it started when i was drivin on the road and all of a sudden it stalls on the road so i started it again put it on drive and still it turned off what could be the possible solution for this, kindly advice ill really appreciate
Too little info to go by. Possibly the throttle body, which controls the idle. Make sure it's clean. I have a tool for that that I make.
I've got a 2015 Nissan Versa. Twice in the past 6 wks the engine has stalled and shut off when stopping at a red light. Traveling at 35mph-0. Both times late at night. With no blinker,radio,CD, high beam, etc.... Only the headlights on.
Thanks- You're a wise man and I'm happy to have dialog with you.
hello ADPT raining, please i have problem in my cvt gearbox for nissan micra 16v, the problem! no speed no shift, my cvt gearbox did not have air please how i put it air? the part NO: N6-TB40NRF1AA.
thank you for your cooperation.
Where do you get your training Mandy? Your tool set and grasp on the newer and more obscure technologies are impressive. Do you have a background in electrical engineering?
I second that! You're a guru, as well. Brian!
Can you please show us how to hook the controller up? Thanks
Ok, which controller?
My Dodge Caliber 2010 Model have transmission problem is not changing on time . What can be the Cost of that
And what can I do to Soft the problem please.
Soften the he problem, not much, sorry.
Typical cost for a transmission rebuild is $1200 to $2500.
I have a 2015 Nissan Versa with a transmission problem. The tranny shakes for a second or two when the car comes to a complete stop. There's quite a few things to mention here but I'll try to keep it short. Now the diagnostic code is P0705. The car has been serviced twice and has received a transmission (at no cost) and a rear tail light assembly ($300), respectively. Now after receiving the car last time and taking it back on the road, the engine light came back on again!?#&$. Thus, with much grief the shaking picked up where it left off. There's much too write but I'll just say over time I stopped using the Radio/CD, high beams, left turn signal, and before using anything electrical I hit the brakes after starting the engine. This has cut down on the shaking considerably. Now here's a more in depth look at what's happening. The car will go say 90mi with the engine light off. Then whoosh! The engine light will reappear again, say for another 280mi. Mind you, with the engine light on I have to pump the brakes at least once to avoid shaking and another problem, when coming to a stop. Now then, say after the aforementioned 280mi, the engine light will mysteriously turn off again, with virtually no problems at all. Afterwards the car can travel for about 120mi and then the engine light will turn on again, for say another 200-250mi. It's a cycle. Yet when the engine light is on the severity of the problem varies. Most of the time when the engine light comes back on the shaking goes from minimal to gut wrenching bad. Then all of a sudden the shaking lessens considerably until it stops. As this occurs the engine light will eventually turn off. Then the varied cycle will repeat again. I must add, the car has stalled twice at a complete stop. Once with the engine light on and with it off. I will be taking the car to get service again. The vehicle is still under warranty. In conclusion, the Versa does perfectly well when the engine light is off. With the engine light off, it can travel for 100-300mi with no problems. I just hope this electrical dysfunction is resolved soon. I heard electrical problems can be troublesome. BTW, the engine light just turned on again. The engine light was off for 175mi.
Lord help me in the name of Jesus amen.
Sounds like a transmission issue, what's your question.
For more help go to these publications.
www.autodiagnosticsandpublishing.com/Automotive_Diagnostic_Repair_Book_Catalog.htm
@@ADPTraining Thank you, BTW the tranny works perfectly well. The two seconds of shaking occurs when the engine light is on and coming to a complete stop. The problem emanates somewhere from the brake pedal signal to the rear tail light assembly to the transmission. All's well until the vehicle is stationary and that's when the shaking occurs. When the vehicle is at rest, the tranny receives an inapt signal and then it shakes. The dealer diagnosed it as a short in the rear tail light assembly. That's what I was told. I beg to differ. It's been going through this cycle with the engine light on then off, on then off. When the engine light is off, the Versa runs smoothly. Granted, without using the left turn signal, the Radio/CD, the high beams, and habitually hitting the brake pedal first after starting the engine. So it seems. Thanks again for the links. Hopefully it helps.
How often do you have to change the cvt oil how many miles thank you
Honestly, most makers don't even recommend CVT oil fluid changes. I guess so it breaks. www.autodiagnosticsandpublishing.com/
a graphic multi meter is not better than an oscilloscope. Would be really nice if we had good known pressures for transmission models. Cheers
You do, check the ATSG Group charts.
If it's simple an so much easier then y does it cost so dam much more then regular transmissions
Not true, if so you're getting ripped off.
ADPTraining the pictured Sentra CVT has a four-port heat exchange block. My 2008 Sentra 2.0 only has a two-port heat exchange block, and I need the four-port block to add the external cooler. Do you have any idea what the part number is for the four-port block? I have called several Nissan dealers with no success.
Look it up on Alldata...
There are 2 version of CVT heat exchange adapter from Nissan Official, up to where you live in. The 4 port version, 2 of the ports are for coolant in-out and another 2 are for oil in-out. In 2port version, only coolant in-out present. Underneath the heat exchange adapter, you will find 2 holes on CVT body for out in-out. You can make your own adapter just for the oil and let it run through 2 hoses to air-cooled transmission oil cooler. We are doing that just fine in Thailand. The CVT Fluid Pressure is more constant because of lower temperature and that makes the CVT responses better, a bit less smooth when accelerating, a bit more aggressive and responsive. With much reduced temperature, you will extend the life of the CVT itself too.
3rd-party heat exchange adapter is more secure since there is no heat exchange between the coolant and CVT Fluid anymore. You can say goodbye to the leak that can cause the coolant to find it way in your CVT and break your CVT internals for good. And the same way goes for the coolant system too, CVT Fluid may find its way into your coolant system, and that wouldn't be good.
You can download and install CVTz50 app on Android App Store to monitor your CVT Fluid Temperature & CVT pressure sensors. Use any OBD-II Bluetooth Adapter and your phone becomes great tools for your car and its CVT. There is an app called Torque Pro, which is great, but it doesn't connect to Transmission Control Module, it reads coolant temp and shows that for transmission temperature instead, false data that is.
Hope this helps...
We live in Thailand. And there is an auto workshop called "Hybrid Autocar". You can hook them up on Facebook or Google. I installed mine there.
I hope this helps for anyone who's searching for a solution for this.
I ended up getting Nissan to cover the service kit installation (21606-ET89B).
CVT Transmission are complete junk…
Just had the 3rd one put into a Nissan Pathfinder,
The transmission shop said brand new ones from Nissan fail often…
I’m still having trouble after spending over $5000,
Transmission only been in less than a month.
Complete Junk!!!!
Bummee
Could you give me the procedure in text
I suggest you get one of my Ebooks that deal with this situation.
autodiagnosticsandpublishing.com
@@ADPTraining Are they sent digitally or do you send the books physically?
Oh look, there it is guys. The worst transmission in the world
Luchador EMC - one of the easiest types of transmission to work on, in terms of complexity and assembly/disassembly time, but horrible in that the car and transmission manufacturer are not making parts available... And some seem to fail prematurely.
Yeah just bought a 2016 Nissan Altima its got 70,000 miles I've only had it for about 4 months and it already failed...I'd like to kick the shit out of the engineer who designed this piece of shit...
One of the BEST transmissions in the world you should say...i have done plenty of repairs when CUNT-STOMERS do not even pay the minimum in terms of servicing. And guess what. MINE CVT has 205.765 miles on clock and still it is rock solid even after towing boats-campervans and the list goes on and on BUT i do service it every 18 months. ADIOS nerd!
@@cwozildjian You bought a used Altima with 70k miles on it? Did you get a service history on it? Did the previous owner ever change out the CVT fluid? With the correct OEM fluid? Correct level?
0013 on my nissan primera p12
How do I replace my pressure line sensor
On my nissan primera p12
I had it scan and a scan saying 0013% pressure sensor and my CVT
Look for the sensor using component locator and replace. Depending on make it could be inside or outside.
Bro if youre going to make an informative video... talk. Dont type the shit in and let computer talk.
k3103
Cool
barb doll
I hate this transmission
All brands are now using it.
Words of Walt from Grand Torino, I told you to buy American😡
Ok
This video is useless , just telling us how to use a tools......
Great, unless you need to use this tool and fix your vehicle. www.autodiagnosticsandpublishing.com/pulse_width_pwm_controller_driver.html