EVAP-Toyota/Lexus Systems Function and Diagnostics (LDP, VSV, VPS, P0441, p0440, P0455) 

Thanks Kevin! It is a tricky system. I hope this video really helps everyone understand exactly what they are working with, that way they no longer have to avoid it, and can finally make money on it! Mike Becker, Technical Services Instructor

I missed ya on the last one! Good to see you're back! Thanks a lot, lots of prep work, but hearing all of the appreciation from you guys makes it all well worth my time :) I'm on the hunt for a car to test that tool on. Video should be happening soon...I hope! See ya for part 2. Have a great weekend! Mike Becker, Technical Services Instructor

Glad it was helpful! Mike Becker, Senior Instructor

Hey Xdgbx, thanks! Mike Becker, Technical Services Instructor

Thanks Sauce Boss! Just here to help! Glad you enjoyed the class! Mike Becker, Technical Services Instructor

would u say the launch is better than the verus or maybe equal to Or not quite as good??? I have a verus edge but I'm looking to either get an autel or the launch as a second tool seeing as sometimes my verus is not so nice with eurp cars!!!

euro*

It is too early to tell. I like both tools a lot. I love having multiple scanners. That way if I run into a situation like I did with these 2 Toyotas, I can always try a different tool and hope it works! I am actually looking into purchasing myself an Autel Maxisys tool shortly here. So, i'll have all 3 to compare. Mike Becker, Technical Services Instructor

Thanks for watching Richard! Glad you liked it :) Mike Becker, Technical Services Instructor

Thanks for watching Mark! Glad you enjoyed it! Mike Becker, Technical Services Instructor

Hey Keithy4129, i know, right! Gotta love how they like to over complicate things. Mike Becker, Senior Technical Instructor

It's a valid statement. All of the other auto manufacturers have EVAP systems that are much more simple compared to the over complicated Toyota designs. Interestingly enough the simpler designs work great, hence the comment.

Well why haven't you won one yet?! Shoot me an email, i'll get you my info. We should meet up! Michael.Becker@WellsVE.com Mike Becker, Technical Services Instructor

Wells Vehicle Electronics Will do and most times I dont get to watch it live so by the time I do its over with lol. Still enjoy it either way.

Ahhh I see. Well thanks, glad you are enjoying our classes :) Mike Becker, Technical Services Instructor

Hey Sivaraj, thanks for watching! The system is normally sealed up. The FTP reads the fuel tank pressure that will increase or decrease depending upon external influence. The bypass opens and connects the tank to he rest of the system to check for leaks. On this system you should hear pressure release when removing the gas cap. Mike Becker, Senior Technical Instructor

Hey Kurt, thanks for watching! We have a video showing this issue on a Dodge Dart. Different system than your Toyota though. Most likely, you have a restriction in the system ~Mike

Thank you lol XD

Hey Sneakypete123, no there is not. Only way to see it is in the video. Thanks for watching! Mike Becker, Technical Services Instructor

Sorry for the confusion, Toyota runs the vent solenoid as part of the vacuum pump. The car does not have a stand alone vent, only serviceable as part of a unit. Hope that clears it uP! Mike Becker, Technical Services Instructor

Thanks for the clears up , Thanks.

Hey Charlie, thanks for watching! I do my best to answer every comment/question that is asked. I have run into this before, sometimes its a software issue with Snap-On. First, verify the vacuum is high. Pull the gas cap and see if you hear that woosh. This system should hold some vacuum, but not too much. The relief valve should allow it to escape if it gets too high. Also, take a peek at the fuel tank pressure sensor. Make sure it reads 0 with the gas cap off. Mike Becker, Senior Technical Instructor

Hi Mike, I was shocked to see that you replied, I really appreciate it. I've watched this video multiple time in order to understand the intrusive system that I'm having trouble with. I will eventually find and fix this issue of the recurring P0441 code, but it's been a struggle. I think the ECU is seeing a rise in vacuum in the system when the purge valve is commanded closed, but I'm not sure. I found conflicting information from different sources, one says this code is triggered when pressure in the canister doesn't drop during purge, and the other source indicates the code is triggered if vacuum didn't drop during purge "or" if the vacuum increased beyond a specified limit. I think this high vacuum could be my issue? I can understand not being able to build vacuum due to a leak in the system, but the vacuum too high is questionable and vague. As I previously mentioned, I can only suspect a purge valve not turning off when commanded to after the system is put into vacuum being the cause of a high vac reading, thus triggering P0441?? I've also reached out to technicians help community for additional info but haven't learned anything different thus far. If you come up with anything further please let me know.

I finally determined the ECU was at fault causing my P0441 code. I installed another ECU and the code hasn't returned since. The evap monitor has also run and passed. What a nightmare, but it's fixed.

Was there any visible signs on the ecu? I know in the early 2000s toyota was switching to lead free solder and that was the problem with rav4s transmission problems, just curious if that's what caused yours

@@chasruss212r did you use a led light in replacement of the purge valve to watch it or does your scan tool actually see everything I have a 2008 rav4 I'm dealing with this same bs atm, these ambiguous codes are a real money pit sometimes without the proper tools

Hey Sami, I have never heard of clearing a the codes voiding the warranty. Best bet would be to contact your local Toyota dealer just to be sure. Mike Becker, Senior Technical Instructor

Hey Mr. Yabe, I don't know of any engines the open the purge with just the key on, engine off. During idle and driving conditions the PCM will pwm the purge open. This open amount depends on the load of the engine and the presumed fuel vapor capacity in the canister. Mike Becker, Senior Technical Instructor

+Wells Vehicle Electronics "mabuhay from Philippines" sir thanks more power more viewers and hoping more videos to come .Ive learned a lot from you and from Wells thank you sir

Hey Casey, that's a nearly impossible question to answer. A p1600 is related to an ECM power failure. Could be wiring, could be an ECM issue. It should be properly diagnosed. It could take 5 minutes, an hour, or 8 days to figure out. Best bet is to go to a reputable shop and trust them until they give you a reason not to. Mike Becker, Senior Technical Instructor

Ahhhh yes, this was a good one. Here check out this video, I explain the answer there. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qdVNyZfdTVs.html Mike Becker, Senior Technical Instructor

Hey Mike, what if this system doesn't use a leak detection pump? Mike Becker, Technical Services Instructor

Hi Allen, most EVAP smoke machines are calibrated to put out about 1 PSI...you don't want to be putting in much more than that. Over pressurizing could lead to solenoid or FTP damage. Mike Becker, Technical Services Instructor

Mark, not sure. Maybe Google will be able to help here. I've never heard of it being done, but that doesn't mean it's impossible. Mike Becker, Senior Technical Instructor

Yeah all l am sure of is that the 2004-09 Toyota Prius Gen 2 are bladder fuel system tanks and there fore make fuel pump replace ment impossible and the after and before did away with bladder style

@@GoTechTraining you are Google to me ...l thought

Hey Upkar Auto Solutions, that could be caused by someone constantly overfilling the gas tank...or a stuck open purge solenoid. Mike Becker, Senior Instructor

@@GoTechTraining how could stuck open solenoid cause this?thank you

@@GoTechTraining do you mean stuck closed purge solenoid?

Hey Joe, the link's not working. What was the "bleed out" in reference to? Mike Becker, Technical Services Instructor

Hey Irfan, yes if you can blow through the purge when it is not powered and grounded it has failed and in need of replacement. I think that will most likely solve your check engine light, as well as the hard starting issue after refueling. Mike Becker, Technical Services Instructor

Thank you very much!

Update! Hey, Need your help again, I changed the VSV 2 months ago and problem solved.Thank you so much for that. However, I still smell some gas when I stop the car. Today, Code P0440 turned on. I had changed tubing and tightened all the connectors that go from VSV to engine and VSV to down below. I wonder where this leak could be! Any help will be appreciated.

Hello I'm new to your channel, I have a 08 Highlander 3.5 l with the same code as Ifran p0441 I've checked all of the front vsv electrical components ( good)and I even hear the click sound after I turn off the ignition.

Hey, next live class we have you'll have the opportunity to win one. Mike Becker, Senior Technical Services Instructor

Well that's not good! Looking into it now. Thanks for letting us know. Mike Becker, Senior Instructor

Hey Luis, say what!? Mike Becker, Senior Technical Instructor

@@GoTechTraining The launch scanner work really slow

Hey A, sorry about that. RU-vid had some issue with the trim edits I made to the videos. I'm working to correct them. The processing takes a bit but they should be good to go very soon! Mike Becker, Senior Instructor

Hey Phil, there's an age limit to being qualified? I spent almost 10 years in the shop professionally, at both the independent and the dealer level. I am also Master and L1 ASE certified. Age and shop experience, in my opinion, are not what make a technician or a trainer great. I've worked with a few people over the years with 20+ years of shop experience, sure they had a ton of stories of the good ole' days, but they weren't very good with electrical/diagnostics. Real life shop experience doesn't teach that. A yearning for knowledge and growth does. So the real question is, did you enjoy the class, have you learned something in your time spent here? Mike Becker, Technical Services Instructor

Wells Vehicle Electronics Grow more beard, a belly and get a tattoo. No more unqualified questions. 😂😂😂😂😂😂😂

The book experience guy crapped on you.

Maybe you wish you had his job! Even if he didn’t have shop experience he is very good at teaching “the theory“. Its up to you to put what you learn into practice!!! GREAT CLASS!!!

Hi there I have being watching your videos on RU-vid and and I love your work. I would like to ask you a question I have a 2005 volvo xc90 t6 2.9 with this code any help will do p2419 evaporative emission system switching valve control circuit low