U660E Pressure Switches
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- เผยแพร่เมื่อ 26 ม.ค. 2021
- General information on swapping them out.
PATREON: / curmudgeontransmission
Supplier Links:
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Transtar: www.transtar1.com/
WIT: www.wittrans.com/
Sonnax: www.sonnax.com/
Teckpak/Fitzall: www.teckpak-fitzall.com/
Transgo: transgo.com/
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I have a 2015 venza with that unit. Delay shifting from Park to Drive and sometimes around 30 miles per hour it doesn’t know like what shift it is, like it want to downshift or upshift. Selenoids or the valve body? Thanks in advance.
Hey man I got that U660E transmission! My car won’t shift at all out of gears. Turns on and off as if stuck in neutral. Check engine light on indications solenoid are stuck or off. Not a lot of metal shavings in transmission, but the fluid was dirty!
Would need to know what the codes are, since there is no movement sounds like time for an overhaul.
After the switch is removed is the slu solenoid removable? This video has a great view of the valve body. I cant tell of the slu solenoid is removable .
The valve body will need to be removed. After that there is a bracket that holds the SLU and SLT solenoids in place. Once that is taken off you can remove it. If you are super lucky you can loosen the valve body just enough so you can get the solenoid out and hope the seals under the valve body do not move out of position.
How do you remove the solenoid I have all that part out I need to remove a solenoid
They are held in with brackets and bolts. Pull the bolt that is holding the bracket for the particular solenoid you need to replace. Pull the bracket off and the solenoid will slide out. The small one on the end has the bracket made onto the solenoid.
I recently had a local shop repair this transmission . Their rebuild failed 8k after rebuild and then they suppossedly fixed it and it failed again 2k miles outside their warranty. Im getting a pressure error and check vsc on my lexus. Im thinking a rebuilt valvebody would be great but I cant find anyone selling one anywhere. All I see are the zip kits. What do you think of these? Im getting errors on all solenoids and the pressure solenoid. Ive pulled valve bodies out before but is a zip kit plus new solenoids something a shadetree can pull off?
What is the code? If you are going to spend that kind of money on the valve body buy you a new one, IMHO. Don't buy a rebuilt one. I have put the zip kits in with fairly good success. If you have done valve bodies before you could probably do this. They are a bit of a pain on this transmission though. It is a lot of work. Prep and installation.
Hi, I have a 2011 sienna have this transmission. Just replace the c1& c2 piston and the transmission ecu.Now is giving me p0990 and c1201 also the Vsc is on. Rested it couple time and still come back. Car seem to drive fine. Any help wound be great .thanks
Is it a brand new computer? If not you may have replaced it with one that is not compatable with the pressure switch set up you have. How many pressure switches is there on the valve body, and what did the computer come out of? It could just be a bad pressure switch assembly. They are problematic. Don't worry about the VSC code for now, it will probably go away when you fix the transmission code.
Do you own a shop? My 2009 ES350 with the U660E is not throwing any lights but is shifting hard from 2-3. Right before it shifts it heavily 'enging brakes' before getting into gear. All other gears shift like butter.
No I don't. Go here if you need one. atra.com/ShopFinder I am assuming this is before an rebuild. Just because the light is not on does not mean there are not any codes. These are prone to valve body wear and molded pistons not sealing correctly. Leading to burned clutches.
I have a 2012 Lexus Es 350 with the same transmission, Im have a problem my car downshifts very bad through some gears and very harsh engagement. No shift Flare though , could it be the valve body?
Very Likely. Need to scan the computer for codes first though.
Hi.
I have Sienna 2011 U660E. I have P2714, P0746, P0776 codes. I did take off the oil pan and saw that the fluid was dirty black. I did change the filter and the oil (static change, something about 2,5 l) but this did not help. I still got the same errors. I did test using Autel the solenoids and I can hear that they make a sound (SL1-4). When I am testing SLT I got strange sound (like something is stuck). I am thinking of replacing the SLT solenoid as I think that others are working fine. I have gears 1-4 only now. I saw that if I want to replace SLT I need to drop the whole valve body (which I am a bit worry to do). I saw that I can only loosen a bit the valve body and try to take the solenoid... I have only one question. Do you think that some other things can be broken in the transmission itself (clutch or something else...)? Is this possible to fix that transmission at all???
I have only seen 1 of these that the case bearing race was not worn, most are severely worn. The direct clutches and steels are probably burned up. The pistons will be bad, even if they look good. The valve body will be worn as well as some solenoids. It's fixable but will be expensive.
@@CurmudgeonTransmission can I drive that car to some mechanic? around 60km?
Maybe. Hard to say how far something will go once a problem develops.
Hi. Have got a u660E transmission for Lexus es350 2008. All works well except when hot would refuse to go into reverse. Have also got a p0770 transmission fluid pressure switch circuit high which came up after replacement of the valve body with a u660E from a Lexus Rx350 2011. Also got a torque converter solenoid circuit high. Replaced the TCM and all still same. Any pointer in the right direction would be greatly appreciated
Are you sure it was P0770? I find no listing for that code. You may have an internal harness problem. What is the torque converter code? Reverse can be shut off electrically. May be your problem as you did not say you have a problem in 1st or 3rd & 5th, as these gears use the 2 sets of clutches that operate reverse. Did you replace the valve body because of the reverse problem? What were the codes before the valve body replacement?
@@CurmudgeonTransmission sorry my bad. The current code I have on it is p0990( transmission fluid pressure switch( tps3) circuit high and p2757( Torque converter clutch pressure control solenoid control circuit performance or stuck off. Previous codes before now were p0776, P2757, P2808. Vehicle drags while moving forward at first but I replaced the valve body with one from a Lexus Rx350 with a u660E transmission and those codes up there went off. Vehcile now shifts all through 1-6 without a drag but as soon as the p0990 and p2757 comes up when coming to a stop the vehicle brakes it self. The feeling you get when you suddenly brake. When hot vehicle doesn’t reverse. What i do in some cases when cold if it doesn’t reverse is actuate all the solenoid using my scan tool and this helps in making it move in reverse
Sounds like you still have a valve body problem. These have a lot of problems with them. Odds of getting a good used one are not good.
I was given my first Highlander 14 V6 FWD 3.5 XLE to fix. I have 2 months with the truck and pretty stuck. No codes are shown, it only shows pressure Loss in reverse. Now the piston that is used for reverse does work because I applied pressure for test functionality and passed. My only quick guess is that the U660e body valve has an issue. The D shift works great for shift 1, 2, and 3. Shift 4 starts failing and never reach Shift 5 and 6.
Could you advise if I need new u660e body valve or where could issue be? Good news client is family member because of the lead time.
Could be a valve body problem. Most are worn out, especially if it has high mileage. But have seen low mileage ones worn out. Most have a bad case also. Only seen 1 that was not bad. The bearing race in the case starts spinning making fine aluminum and clogging the solenoids. You cannot replace it yourself, it has to be machined out and sleeved.
@@CurmudgeonTransmission So as update, I changed the full valve body to another reman one and finally got codes P0796 and P2714. Now reverse works but shifts 4, 5, 6 still have trouble. Based on this new feedback, what you recommend?
Rebuild the transmission with molded pistons.
@@CurmudgeonTransmission
I have recommended my client that I will buy him full used transmission for 2K in Car-part website. Though what steps need to be done because obviously it is not direct install since it comes from a different VIN. By the way, I highly appreciate your shared tenure and experience.
Put the computer from the original transmission on it and it will not need to be programmed. Just reset the adaptives and relearn the shifts.
I have a 2010 Lexus with a u660e transmission. I'm getting code p0990 transmission fluid pressure sensor/switch "E" circuit high. I changed the pressure sensor switch and added new ws fluid. P0990 comes back. Book says switch should have 10k ohms or higher across the the pressure sensor. I've tried/tested two new switches and my readings on my meter are "OL" out of limits. Do you have any insight? Any help would be appreciated.
Are you checking at the sensor assembly itself or through the case connector? Might have internal harness problem.
@@CurmudgeonTransmission I have tested both ways. Tested from the harness with sensor plugged in, same OL reading. I also bench tested sensor and get OL across all the pressure sensors. The service manual says harness should have less than 1 ohm resistance, which I have, harness tests good. But service manual says pressure sensor should be 10k or higher across pressure sensors which they are not, not even a brand new one.
You are connecting the ground lead to the metal plate on the sensor and the positive to pins 1,2 and 3 correct? Where did you buy the sensor from?
@@CurmudgeonTransmission yes. Ground on plate and poss. on a terminal. I bought oem parts.
Hmm, strange. Have you tried pressing on the switch with the meter hooked up and seeing if it changes at all even for a moment?
I need a switch for a 2014 Sienna. I’ve been looking for a single switch plate but all I can find are the ones with three. Where can I get the single plate?
Have you tried WIT, Transtar or the dealer? Links are in the description for WIT & Transtar. The bulletins say you have to use the 3 switch with the 3 hole plate and the single with the single. I see no reason you could not put a 3 on a single and it not work. The other 2 switches don't need holes. The computer will never know because ther are no wires going to the other 2. The wires are still going to the same pins.
Thanks for the reply, I was able to get a single switch assembly. I dropped the pan and removed the filter. Then I removed the sensor and put on the new one. Put everything back together and adjusted the fluid level. But when I try to shift now nothing happens, it’s just permanently in park. Makes me think fluid got in the wiring. The switch itself actually popped out of the assembly, but I put it back in. Do I have to clean the wire connections before I plug it in? Again, shifting does nothing, it’s not even trying to shift.
Also, the original code it was throwing was P0990. I was hoping it was just the pressure sensor assembly and it would be an easy fix.
If you have a scanner that shows data you can manually check to see if it will change status. Pull the sensor off and push on it. If it is changing I would have to say it is a bad TCM. If it is not it may be a bad internal harness or TCM.
The thing is it was still able to shift before I drained the fluid and worked on it. Now it won’t shift at all. I checked the shift lever and it still moves. I can’t think of what could’ve broken just by me removing the fluid. The fluid was very burnt and had chunks of metal in it. So that makes me think by draining it it moved some metal bits into something causing it to seize. My next idea was to just get a new valve body, but I thought I would ask you first…
Hey sir, what is the part number for this pressure switch ?
Thx,
I do not know. There are 2 different ones. Single and triple sensor. I would get it from the dealership.
I need single switch one.
Dealer doesn’t know the part number.
Thx,
2014 Toyota Highlander.
Single sensor.
@@lalabilloo You can put the triple on a single unit, but not the other way around. So if they have a triple you can use it.
Thanks,
I've got this transmission probably on my 2GR-FE. Noticed the transmission kicks when i hard accelerate from 35 mph. If i hard accelerate from 0 mph, it shifts smoothly. What could be the problem?
Do you have any codes or check engine light on? Not just transmission codes, any codes?
Nope, nothing. Haven't checked transmission for codes. But no check engine light. I'am guessing it is not downshifting right. Could this be a faulty solenoid?
@@misterispusovcikas9066 Yes, could also be a worn valve body. Both are very bad about wear. Could be other issues causing the transmission to act up.
What else \ how bad it could be?
@@misterispusovcikas9066 Anything that has to do with engine load. MAF, MAP,. TPS. Anything that has to do with that affects line pressure in the transmission.
I have a 2012 toyota sienna 2wd with the u660e I am getting codes p0741and p2757 I know the 741 is the tcc solenoid not sure what the 2757 code I think it is a fluid pressure solenoid I can't afford to take it to a shop I have worked on cars for 30+years I recently rebuilt a 4l60e with alot of sonnax upgrades. My question is if you it is solenoids I for sure need to replace and if so if you might know what the part numbers Re for them I have had alot of trouble finding those I only have a couple days to try and get this repaired it is my sole transportation to get to work I would greatly appreciate any help you could give me
2757 is a TCC solenoid performance code. Fancy way of saying it does not detect lock up. It uses the TPS, MAF, Input and output speed sensors, as well as the crankshaft sensor to determine if lock up occurs. So it can be a problem with any of those sensors as well as a problem with the SLU solenoid. Could also be a problem with the torque converter. Most of the problems I have seen are either a TC problem or one of the speed sensors. Look at your speed sensors first.
@@CurmudgeonTransmission speed sensors on the trans?
@@MegaWolfman76 Yes
@@CurmudgeonTransmission thank you so much!!! If it is any solenoid or solenoids would you you know which one or ones and maybe part #s for you are a life saver if I can't get this fixed in next couple days it could mean losing my job thank you so much!!!
@@MegaWolfman76 SLU solenoid. 35280-52040
I've got an 07 ES350 with this transmission. It has a shift flare from 3rd to 4th gear only when cold. Any recommendations on how to tackle this issue? I already performed 2 ATF fluid changes (changing about 5 qts of fluid) and it seems to shift better but the flare is still there.
If you are lucky it is only a worn out valve body. I would try a Sonnax Zip Kit in the valve body.
What solenoid deals with the 3rd to 4th shift? I'm going to attempt to replace it before going the Sonnax route.
SL1,2,3 and 4 all play a part. SL1 and 3 do not change. 1 is on and 3 is off. 2 changes from off to on and 4 changes from on to off.
Thanks for the information.
@@CurmudgeonTransmission скажите пожалуйста sonnax zip kit это качественные детали?
2013 es350 showing code p0793 cleared the service engine light hasn’t came back on it’s shifting smooth as always but when I’m sitting still it’s like my first gear will go out and it revs high to move then maybe 5 seconds after I let of the gas it will shift kinda hard into first it’s like it’s up shifting when im sitting still to a higher gear then all of a sudden down shifting back to first then it will drive fine for maybe a hr or could be all day or 5 min it’s random code says my intermediate speed shaft sensor what should I check first
It may be upshifting. It could be the speed sensor, internal wiring or TCM. If you have a scanner, watch the speed sensor data and see if it is showing rpm's while this happens. I have a feeling it will be the TCM.
@@CurmudgeonTransmission whenever I put it in gear either reverse or drive it makes a noise coming from one of the wires kinda like a sizzling noise I hate to replace the shaft sensor in the transmission and it not be that I was thinking the tcm also that’s very expensive to though