How to test an EVAP Vent solenoid (applies to all cars) - GM
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- Опубліковано 4 сер 2024
- EVAP System Vent Control Circuit Low P0449 trouble code diagnosis.
How to test the solenoid, wiring and computer transistor driver.
The testing methods shown in this video apply to ALL computer controlled solenoids. This particular solenoid is ground side switched by the computer. (Low side driver)
EVAP Vent Solenoid Circuit Problem P0449 (2006 Chevy Uplander)
Phil's Electrical Probe
www.aeswave.com/11-inch-Phil-s...
Power Probe IV
www.aeswave.com/Power-Probe-IV...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
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On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. - Авто та транспорт
Keep going. Those who put a thumbs down either have a bloated ego or are just jealous because of the help that you do for us DIYers. You(with Schrodinger's Box, realfixesrealfast and Scotty Kilmer) are one of those I actually follow because you breakdown the cause & effect of why cars breakdown and provide instructions. We truly appreciate what you're doing because you made us understand electrical concepts on the classroom level.
Thank you for the great video. I'm a mechanic but trying to become an automotive technician and your videos are so full of information and great for learning. I could spend hours a day watching your videos.
+Saul Gonzalez thanks man. Keep watching. I'll help you become that diagnostic tech you want to be. Email me through my website and I'll give you a coupon for a free month of SD Premium.
Saul Gonzalez
Going to have to order one of phils probes! I always enjoy how you explain things so I can understand. For example when you used your test light i was wondering why you didnt just use the probe while being careful not to paply power and you did show that. Thanks for the great educational videos! Don’t know why people thumbs down this video!
I really enjoyed this video Paul. I love your videos. You're great at showing how it is in the real world fixing cars. My wife and I met you at the Vision Expo in K.C. a couple years ago. I bought your book (it's awesome) and you even autographed it for me. Keep the videos coming and don't be discouraged with people's negative comments. Blessing on you and your family!
+Jason Wieland thanks Jason. I remember you. Thanks for your support!
Video is great. I'm ordering one. I live 35 minutes away from Hemet, ca in Coachella. Thanks Paul and Phil
I don't know if anyone has said this, but The Power Probe 4 has a driver test built into it. Hit the Mode button then go to DRV TST (driver testing) I have used it may time with all kinds of modules with no problems. Thanks for the videos always great to watch!
+K. Louis I'm aware of this now. Thanks for sharing!
Fluke and several other brands make these same adapters in various sizes. Definitely a big help in these "hard to reach" situations. This is one of the larger versions that I've seen. Nice tool.
thanks man
Great video. Thanks for taking the extra time to make these.
Great video! I've learned so much from you and others with similar channels. You have saved me a lot of money over the last couple of years. It has also enabled me to use that knowledge to help family and friends in there car troubles. thank you
+Eternaly Random awesome, thank you for your encouragement
That Phil's piercing probe is way to thick!
Thank you for all the info on testing an EVAP solenoid!
okay, I don't mind the thumbs down, but when it is this early in a video release it has to be from one of my faithful subscribers. please tell me what you didn't like, even if it is a private message, I'm okay with that.
I realize it may be because I plugged that electrical probe so much, but realize it was from the heart AND if I can support a fellow technician that has a great product, I'm going to do so. I would do the same for any one of you!
Somebody's just pulling your chain or being a keyboard warrior. That said i have accidentally given people a thumbs down whilst wachting on my tablet and catching the wrong part of the screen. You're doing good, keep doing it.
Probably Phil's wife. She didn't appreciate you touching his tool. ba dum cheeee.
PS. Why don't you have a tool with your name on it? Pretty jealous of Steve Rob's ScannerDanner test light to be honest.
+lolz larkin lol, seriously laughed out loud and read this comment to my class
+lolz larkin Hey Lolz , I know you really want a ScannerDanner test Iight real bad, so if I get another limited edition Premiun channel test light I will send you one free of charge. Hope you don't live too far away :)
It's frustrating seeing the thumbs down from my end too. It must be even more frustrating for you. You're always going to get egotistical people who think they're better, and that their methods are superior, or that they'd do it differently. But that's not to say whomever clicked the thumbs down hasn't a genuine reason for doing so. I only wish they'd share why so we can all learn from their wisdom.
Keep it up Paul, it's all good! 👍
Nothing beats a cool tool and I think it's nice Paul gave the inventor of the tool a shout out. See nothing wrong in that because it was demonstrated exactly how it was intended to be used. Can't wait for my 1 gallon paint can smoke machine to be delivered this week, I may give that guy a shout out hahah.....i'm diagnosing a P2279 on an 05' Acura MDX 3.5l and it's beating me up so far!
+Ozzstar thanks man. definitely let us know how the smoke machine works
love my PP4,Ever since I bought one I feel like my DMM just sits and collects dust I've even used that injector feature on it (bounced it against my scope and was right on with mS and inductive voltage)...Really trying to find a reason to buy the Hook but this seems to work great for me...Once again great video !!
The king of education. Superb content as always
Video is great, I will be buying that tool. Thanks again SD. As always your the greatest.👍
so, you used the test light to limit the current to say 315mA (just enough to load that ground, compared to a LED test light of 20mA) and the PP as a voltage source & switch. If you connect the PP to the driver, the only limit to current flow is its circuit breaker (8A thermal) that will be above the rating for the switching transistor in the ECM driver. Thank you for the video, great teaching skills and explanations.
I think I'm understanding your statement. But to be clear, NEVER hit the switch on the PP when you are testing a driver in a computer!
Sure, you will apply 12v capable to deliver 8 amps to a driver circuit that may only go up to 1-1.5 amp forward. Time to get that magic can of smoke that we all love so much...
Nice tool! Quick and easy! Thanks Paul.
Thanks for clarifying Paul , I watched it again and now I get it.
+Vince o brien no problem. your question was a very good one. in fact it is one that most people miss, so props to you my friend.
Though this tool looks great, I can definitely see some potential for accidental shorts to ground based on the long exposed metal portion on the device. Have you ran in to any problems concerning this?
Don't let the negative people get you down Paul. If they disagree with something in one of your videos they should say so. You are great at what you do and thank you for sharing your knowledge. I have worked with guys that are really good but they won't share anything with you! That's wrong.
+Thomas Semich I won't, thanks man
I thought I would never see you use a power probe ! it is a great tool but you are right it also can get you in big trouble if you don't know how to use it
Great video Paul I think its awesome when you talk or show new tools because there are so many different tools out there and its tough to know whats good and whats junk and if scanner danner is using it, it must be good. Lol
+JOHN HUFNAGEL lol thanks John
thanks for everything. like usual a very useful information by scanner danner,
That's funny. Phil owns Phil's Auto Clinic here in my hometown Hemet, CA. Dude's probably one of the best electrical technicians I have ever heard of. I remember when his piercing probe came out. All the local techs bought one.
+Thomson85 that's cool! well, if you see him, tell him I said great job on the tool! seems he is also a fellow iATN member and I had no idea.
+Thomson85 Sir, I don't recognize you from the photo but I appreciate the complement. Thanks!
You wouldn't recognize me. I have never met you. I grew up in the automotive world, with my father being a technician at Tri-Buick for 20+ years. You are well known in the community. I myself am a Kia technician.
Great video Paul. Nice polite warning on using the power probe power/ground supply button on sensitive circuits. Very nice wire piercing tool. Next time I shop at AES wave it's on my list.
+mrghiax I'm loving this thing. Just used it again today to troubleshoot a bad fuel pump. And the severely rusty under carriage is made made me decide to use it. Connections directly to the battery was key.
Hey, Paul....I just remembered where I had seen those probes before....In my former co-workers old Fluke scope case. He had two, and they were both broken. The thinnest part at the "throat" of the hook snaps-off.
Good to know. thank you! btw looks like a great tool too. I love tools that pay for themselves in one use. thanks again!
Might get one of Phil's probes myself! It looks like it is a well thought out tool! Paul the Power Probe is nice but used in conjunction with your famous test light made a simple test look complicated. ( Tip ) I made a test light with a 25 foot cord on it ( stranded,12 ga, low voltage outdoor lighting wire, Home Depot ) and it eliminates the need to find a decent power or ground, since I am always hooked at the battery to B+ or B - . Great vid, keep them coming! You still the man Dude ! LOL !
+Billy R I made a long one as well... only mine is really just a jumper. Can be used in conjunction with a test light or whatever fits the need of the moment. (Really it's my third iteration; the first was gifted to a colleague, second was damaged beyond reasonable repair, and the third, now well worn, currently sees near daly service.) I want one of those long probes as well... probably look into it tomorrow.
you sound as creative as I can be at times !
Hey Scanner Danner i appreciate your videos, I just bought your book 100% satisfied. You are a great tool for all DIYM and most Tech"s. I have a suggestion do a video on working the MT2400 for does low budget techs...Thanks.
+Antonio Melendez Nieves thank you! and thanks for the suggestion
another great video thanks for the knowledge
Can you explain how you had the test light hooked up and was turning on and off with the power probe.
Am I correct that you could use the PP w/ the 5v adapter straight to the control wire?
Hi Paul !!...I have the 5 volt PP adapter tip...now you can use that on that wire without frying the computer...correct ??
another great video - thank you, Paul
+Jerod Matlock thank you Jerod
at 8:25 when you used the light the second time , was the ligth conected to ground or positive? i think is conected to positive without the power probe right?
Paul great video!!!!! I am not sure if anyone commented on the PP4 having a ground pigtail, you could have connected the vantage ground to it.
Good job...i’m understand very much now...thank you
Excellent video thank you so much
you can use your power-probe in " DRV TEST MODE" to test "ecm-pcm driver"?
WOULD LOVE TO KNOW MORE ABOUT THIS ?PLEASE !
Definitely a great tool for difficult to reach wires.
Although it prob wouldn't have worked easily on this setup, I was shown a nifty trick for checking those vent solenoid circuits out (the two wire ones): take a 921 bulb and at the bottom the two wires can be bent out from the glass base and they are the perfect size and distance apart to plug directly into the vent valve connector. Unplug the connector from the vent valve, stick your handy dandy circuit tester bulb into the connector, and then toggle the valve with your scan tool. Bulb lights up- you have a good circuit and driver. Plug the connector back on the vent valve and toggle the solenoid once again with the scanner: if you hear it click, it's good. If you don't, it's more than likely bad. It's a quick 30 second way to check your circuit for power and ground (or power and control), turn the valve on with the scanner and if the bulb lights, your circuit is good. If it doesn't then you can break out the meters, power probes, and extension wiring and find out why it's not working. I have also used this method to check power and control / ground for the two wire purge solenoid circuits as well, it's a real quick and easy way of verifying your circuits to rule out the computer and wiring to the solenoid and all you have to grab is your "circuit checking 921 bulb". I keep several handy in my electrical drawer of my box and it's a huge time saver when diagnosing those pain in the butt EVAP codes. Thanks for the tool review, I need to get a couple of those "Phil's" as well!
+FireoftheGreeks great quick test, thanks for sharing
would this work on an injector also ? im assuming yes
good video thanks for sharing your knowledge
+Florentino sanchez thanks for watching!
Hi Paul I find your tutorials are excellent but just one question ,when you were checking for power with the powerprobe could it fool you because you are not putting a load on that wire ,you could just have 2 strands of wire left and you would still see 12v and a red led.
+Vince o brien yes and the same goes for the voltmeter. In this case I could not load the circuit because the solenoid coil was open.
So think about it, I never truly loaded the feed wire and there still could be a problem there. But what are the chances that the solenoid is open (which it definitely is) AND the feed wire has a resistance problem at the same time?! Almost a 0% chance of that. If you are concerned about this in the future, the incandescent test light will be your friend. It will load the circuit for you.
what is the red with a white strip wire on the vent valve 12 volts ?
I like that probe, getting it.
Thank you. I ll try this on my purge valve. Code P0458. Pretty sure same concept. Which I did saw 12 v and a control voltage. Which kinda weird, should be close.
Great video as always SD. I just have one request, when you measure circuits and find certain values you only tell us what values are showing but never what they should be. In other words what good and bad values are so we can interpret what we see at home working on our own cars. Thank you, kind sir.
Of course I tell what the values should be. If I didn't in this video I apologize! Keep watching, you'll see
+ScannerDanner Does the test light protect the computer controlled circuit because it puts a load on that circuit (the test light)?
Not a load. The globe limits current flow to a safe level.
TJM Networks
Well, TJM Networks is not wrong. The test light does put a load on the circuit, which as a RESULT reduces current flow, as opposed to putting 12 V directly into the driver-controlled circuit with no resistance which would result in no load = no resistance= high amps = fried PCM :p Or did I miss something? :)
Hey Paul, I don't own a Power Probe 4 yet but I am planning on buying one. I have a question about your test of the ground driver of that solenoid. To do a accurate test of the Driver don't you have to have the tool in Driver Test Mode? I saw on the screen that you are on normal Voltmeter mode. I don't own one yet but I thought I would ask. Plus if the tool doesn't load the driver in the Voltmeter mode then that test you did is a inaccurate test. Thanks.
+busjockey1 driver test mode (which I didn't know about before I shot the video) is a mode that applies around 12 or 13 ma of current to the driver. Basically the tool is measuring the current flow through the LED circuit.
Technically speaking, as long as you see the voltage drop, this suggests the driver is functional. I've NEVER seen a driver pass that test and fail some sort of loaded test. If you think about it 13 ma is not really a load either, especially when the solenoid draws about 350ma.
Remember every circuit is different and we cannot know what normal current flow is in all situations, so "loading" the driver is not something I'm really wanting to do. Make sense?
Yes I understand. Just didn't know the full operation of the tool. Thanks. Just ordered mine. Can't wait to tinker with it.
+ScannerDanner I finally used the driver test mode on the Power Probe 4 and it worked pretty good. Used it to check the cdf fault driver on a Thermo King Intellegaire 2 Motor Drive. Try it out when you get a chance.
I have a powerprobe hook and 4 and love them. I haven't had the need to try it yet but isn't this test what the driver test mode is for? As always Paul, great video. And ignore the negative people. 7 billion people on the planet, always will manage to find some sad individuals.
+Matt W it is and I didn't know it was there. I'll show it in the future.
+ScannerDanner yeah no dramas Paul. Honestly not meant in a negative way. Just making a comment. Love your work as always.
helpful vid as always paul, got a hardware ? here...... where can I get some of those alligator clips and probing thingys you always use. they're always in your vids , like jus a nice small wire that comes out of you leads, I jus got my green powerbrobe 4 and the vantage should be here soon so im gonna need some nice clips and probes for sure.. thanks
Go to my website. I've been building a tools page for you guys. Thank you!
www.scannerdanner.com
Also be sure to check the descriptions of each video. I've been listing tools and related videos there too
great video are you ever in chicago dan
Phil is a great guy from hemet California. I met him when I was selling tools for Mac Tools. Got to see the probe when he first made them. Phil's also a instructor at the local college.
cool! Tell him I said hello and great job on the tool if you talk to him. I don't know him but it is my pleasure to promote a great tool especially when it comes from a fellow tech and instructor.
ScannerDanner, Phil here of Phil's probe. I'd love to talk to you. I hear from a fellow technician that you are a Christian. I don't know if I can leave contact information here but if you google Phil's Auto Clinic in Hemet, California you will get my shop. I'm on the road teaching quite a lot so I may not be able to come to the phone but if you leave me contact information, I'll call you back.
I am Phil. I'll send you a PM. Thanks for creating such a great tool!
And to know that you may be a brother in Christ is even better!
Hay guys glad to know we of two same brotherhood. First and for most a Child of Christ. And the automotive world.
Anon Person
Been a subscriber since 2014 and a subscriber on your premium channel since 2015 and I have learned alot thank you! Question is if your scanner does not have bidirectional option for the vent solenoid do u just turn on the car and will it start flikering right away if the driver is good or does it take while?
That vent solenoid will only close during the EVAP leak test and there are many parameters that need to be met for that to happen.
Time for a bi-directional scan tool my friend. You can get a decent all around one for under $1500
Thanks so much for your longtime support!
Got the snap on modis but does not have that option for my 97 ford expedition or I missed it, will double check. Thanks again for all your content on both channels literally I did not know how to do any of this electrical diagnostic trouble shooting but after buying ur field manual and watching every single one of ur videos twice on both channels and writing down notes dude I have learned so much lol, i am actually on my 3rd round of watching ur vids now, god bless!
My 2011 Camaro v6 I’ve changed the canister, solenoid, fps, fuel pump, and I still can’t put more than 1 gallon of gas in it or it starts misfiring or goes into limp mode. As long as I don’t put more than a gallon in it it does ok. What can it be?
I LIKE TO SEE YOU DO THIS TEST WHIT OUT A SCANNER
+pedro rodriguez can't command the computer to turn the driver on without one
Thinking of buying a Power Probe 3, should I buy the basic kit or one with a bunch of attachments??? I'm a DIYer
You'll want the attachments too man. For sure.
Good video
But I do like that wire piercing tool you were using. where can I get one? thanks man
+GREG Feeney it's in the description of the video. Thanks!
So you used the power probe as a switch for ground on/off for your test light? It seemed like you were using the term power alot. I just got my first power probe 3, and trying to learn applications for it, and how to "leave the SMOKE in the box"
Leave the smoke in the box indeed! This is a great tool! But is just as dangerous as jumper wires in the wrong hands.
great videos. im I diy guy, im fighting a po446 on my 01gmc 1500, not other codes, I bought and swapped out the vent valve, valve on intake and new charcoal canister and new gas cap, worked few weeks and light came back on, I turn cel off with scanner and come back on next day, I have checked both new and old parts with power probe, it clicks on and off and other intake valve holds vacuum . I read in a forum that the fuel tank pressure switch could be the problem, I have tried swapping just one item at a time and no luck. the o rings on tube from canister to vent valve seem to have a good fit but the plastic lock connectors have broken, looking into making or buy a smoke machine any advice would help. keep up the great videos. travis
+Travis S what is the definition of the P0446 code? Is it "vent control" in part of description?
evap emissions vent circuit low, common fix is to clean or replace vent valve. but no luck on that.
+Travis S okay cool, that's what I thought. Two main causes 1. open vent control solenoid 2. wiring to the solenoid is corroded.
Since you already replaced the solenoid, tug on the wires near the connector, they will break if the wiring was corroded internally. The insulation can look fine from the outside. Don't be afraid to tug on it pretty hard.
Where did you get those leads you have on the snapon vantage?
Check my tool pages from my website. I think i have them there. Thank you!
www.scannerdanner.com/tools.html
One take you to my Amazon page and the other to AESwave
you should do more of your checks using the power probe
+Cody Wichman there are more coming
Will it be possible to check the solenoid resistance with the test light to ground and it find 12 v throw the solenoid, when the pcm output is not active? Same way you does with an starter, with test light on battery positive and the testlight tip on control wire to the starter, with the relay in off position.
Resistance? No
Integrity of the coil winding? Yes!
@@ScannerDanner my bad, resistance was the wrong word. Integrity was the word I was looking for.
I'm liking that probe.
+CravinMorehead420 that's what she said
+ScannerDanner Hahaha.. she did indeed.
Hi Dan is it ok to test canister vent valve circuit driver ground on a 1999 e250 with a multimeter ?
Use a test light like I showed. Your multimeter is not going to provide any type of load to that driver.
My name is Paul Danner btw
what would be the advantages of doing the test for short to ground with the test light and the power probe. then just touching the power probe to the test lead and seeing if it lights up green?
thanks for the videos btw you have a new fan
lol nvm I should've finished watching the video before I said anything.
No problem thank you!
is that the power probe with the scope built in, if so is the scope Any good
+Paul Meehan It's not a scope but it does have some other features, such as a very fast glitch capture mode. I'll do a review on it soon when I become more familiar with it.
+ScannerDanner cool, I'm looking for a starter level scope, the u scope looks good I'll just have to see how much postage is to ireland
ScannerDanner I don’t understand what exactly you did with the test light and the power probe
I used the test light over the LED bulb in the power probe because it is more of a load
I have a programmable power supply which is amazing for valve or solenoid that is working and passes ohm test I just hook it up and let it cycle to see if it fails
How would I go about getting that Phils Electric Probe?
+Nick Palmer www.aeswave.com
Let me Google "Phils Electric Probe" for you...
Hahaha I can hear blue oyster cult in the background. I wanna hear more cow bell. lol
Scanner danner, your the Bomb dude, where can I buy that probe.
www.scannerdanner.com/tools.html
i use a car antenna wrapped in heat shrink with a sharp tip to get in tight spaces. some conduct electricity better than others.
hey dan do you have experience with autel 905 scanner
My name is Paul. Last name Danner. But for obvious reasons I get Dan a lot.
Sorry I do not. Maybe some of the guys on my forum do?
Worth asking for sure.
www.scannerdanner.com
Man I am so glad to have meant you on UA-cam,i will be buying your book's even at 55, i am loving this more now that you help me Paul ,thanks and may GOD ALWAYS BLESS YOU AND YOUR FAMILY
Thanks so much my friend. May God bless you and your family too
Paul ..........our famous Pete .....again!!! :-)
thanks thanks thanks Paul Danner you are great teacher never change you teach as very to mach a precio your teach thanks god bles you thanks for you time for teaching us thanks
+Jesus Malagon thanks bro! your English is getting better all the time. Keep it up!
Had this exact problem today on a 2006 Chevy K1500. No ground switching in the ECM. The shop that it was at had already replaced the Vent Valve due to the TSB and the truck still wouldn't let fuel be pumped in. Long story short, check your inputs and outputs before shot gunning parts. Very strange problem that I've never seen. Even stranger that I get on UA-cam and there's a video of the same problem.
+Nick Pittroff thanks Nick
i have never been a fan of the stab style wiring checks, i know sometimes it can be the only way, maybe an insulated 90 degree back probe would have been the best tool to use for this job, if that tool is available.
maybe a 90 degree pick with an insulated shaft would have worked..
great vid..
+chrismechanic B couldn't reach the connector my friend, even with a tool like you describe. but I understand your concerns for sure.
ScannerDanner maybe a long reach 90 degree back probe could be phil's next tool he designs.
+chrismechanic B What about a amp probe @ PCM or other access point along the way ? If there was low or no current then you would have to get up there to access it anyway, Correct? Also a volt meter hooked across the circuit would give a lot of info by itself using floating voltage. PP is a great tool but is a dangerous tool in the wrong hands. I have had to fix to many controllers with fried chicken drivers. Either way nice Video Paul :) I was hoping you were going to do another video on the Hummer with Intake pressure waves. That was one of my favorite series.
Can we get a link to this probe tool please... I'm interested
+Damien Burfoot it's in the description of the video. Thanks for watching!
+ScannerDanner lol so it is i completely overlooked that.. thanks
I'm really confused. I thought you said if you supply power with your test light with driver on, you'll cook it. But you just supplied current from power probe though test light and to the driver. Maybe I'm not seeing this correctly. I really want to understand this.
The test light is the load in this scenario. I also know that my test light draws about 200ma and the solenoid is even more than that so there is no danger to the ECM driver.
@@ScannerDanner oh that's right, as long as you use a low current permitting test light or computer safe test light it won't hurt. I also noticed you didn't press the switch you just touched the probe end to the wire piercing tool..
When you were checking for a shorted ground wire or driver, you pressed the switch to send power. Then with driver on, you just touched the top of the power probe?
question Dan ! why 5 years to get a power probe ??? and also there is a better model. gives you resistance and amp.
+Mario Letourneau In my opinion/experience, those switched 'probes' you mention have caused more damage/grief than any other electrical test devise I know of. It's just that it's too easy to inadvertently power up or ground something unintended. They're probably fine for trailer wiring and related... Sorry, but seeing someone with one pegs them as a 'newbie' in my book. Again, just my .02¢ worth... YMMV.
+rwbishop power probes are great tools. Just because someone owns one doesn't make them a newbie. They're great for alllll kinds of electrical problems. But yea I don't use mine on driveability stuff
+Mario Letourneau why in 5 years do you still not know my name? It's Paul haha just messing with you. I get Dan all the time from my last name Danner.
+rwbishop agree with you my friend. I've seen more harm than good, but it has always been from the uneducated. I think this tool can actually help me in a lot of situations, so I'm giving it a chance. Of course I will continue to warn people of the dangers of improper use.
+ScannerDanner Sorry Paul, im getting old and im french that is 2 problems. :) i have been using power probe since it exist . the 2 first models. 30 years in the trade . love your book btw . PB saved me so much time. that is why i am surprised that you where not using it in videos. big time saver , especially when you talk about grounds to your test light.. love your vids , keep going !
Testing these circuits with computer in place makes my head hurt, it always seems so complicated. I do get the reason it is done. Components have never been more difficult to get at, access can destroy evidence, and it can be safe if you understand how current will flow.
exactly my friend
Seems like that probe piercing the wires would leave them open to elements/corrosion in the future,more headaches for owners of vehicles.hard to reach,hard to seal.
Too bad there isn't a small injection device to fill and seal the small holes made as piercing tool is removed
I was wondering why not test control wire coming out of PCM first test if PCM driver is compromised to begin with? Anyways great channel.
You still have to test it at the end of the line if it tests good at the PCM. Why would you want to start there? (at the PCM) Also, testing at the PCM is not easy in most applications and is even more time consuming.
ScannerDanner ohh okey that makes sense thanks
nice
A link to your forum pleas. PS good vid. you wire poking sun of a gun!!!
+Joseph Tucci haha yep.
www.scannerdanner.com/forum#/
I like the idea of the video but it is a VERY round about way of testing the vent solenoid. In my experience I've gotten rid of a test light because all it tells you is that the circuit is "complete." it doesn't tell you what the actual voltages are which is a crucial note on today's computer controlled cars. I like that you're using the PPIV. the PP3 would work just as well in this instance. remember people time is money when it comes to auto repair.
When time ECM ON the purg valve and CLOSE vent valve plz ans
During a leak test only. All other times the vent valve is open
@@ScannerDanner who's time ECM open purg valve which are inputs for purg valve opening?
@@AAA-br3cs purge valve opens after the engine is running and depends on a lot of factors, run time, engine temp, engine RPM etc etc
@@ScannerDanner when ECM open purg valve then ECM fuel injection pulse reduse or not
Paul, Thanks so much for the endorsement of the PP4. You may not know, but the PP4 can test the ground controlled driver by using its "Driver Test Mode". It was designed to make fast work of the problem you are showing. During this test the Power Switch is disabled so there is no danger of accidental activation.
If you go to www.powerprobe.com and then VIDEOS and then "How to use the Driver's Test Mode" you can see how.
If you guys have any questions, we are here for you too. jeff@powerprobe.com
+Jeff Whisenand that's cool, I did read about it but forgot it was there. So in this mode, other than it disabling the switch (great idea btw) what is the difference with the green and red leds? Does the PP4 add more of a current during the test? Or is it simply a lock out and you then are just using the LEDs and or voltmeter?
+Jeff Whisenand Here is the video for others to see. fast.wistia.net/embed//lmsx98xobv?popover=true
Great job on the video btw, loved the animation. Anyway, I see that the tool is applying a current limited 12v signal that you can watch drop as you energize the driver. (cool!)
1. What is the current limited at for this test?
2. What about a high side driver setting (power side switched driver), is there a setting to tell the PP4 what type of driver?
I know I could research this stuff, but it would be helpful for others to read the answers here. Thanks Jeff!
+ScannerDanner when using the driver test mode it puts voltage on the control circuit because on some ecus it needs to see voltage to activate the circuit but it will spit safely so you don't fry the computer. Once you activate the control circuit with the scan tool it will go to zero.
+Jeff Whisenand You need to get Paul or Eric to make new videos for the pp IV that are more detailed at how to use it. Too many are complaining including me that your videos and a lot , leave a lot to be desired. You are selling them but leaving people out their having to figure out what the instructions really say. Sure you would sell more with better instructions. You say it is for all levels of experiance. I don't know everything but I am far from inexperianced with electricity
Hey Paul ,don't worry about the thumbs down. Do your thing and if people don't like it. They can go fly a kite. I have your back and so do your faithful subscribers.
+GREG Feeney I know, but I do care when it is one of my faithful. Just checking. Thanks GREG
Oh I know you care. Maybe I misunderstood the whole thing.
+GREG Feeney no problem bro
what is the difference between the premium channel and this one ????
is it about theory and applications difference ??
+Abdullah Faraj and i have another question , what makes you better than other technicians ?? is it the theory or science you hold in your brain ?? because the hands on stuff is the same ??
+Abdullah faraj I have quite a bit of experience with both of Pauls channels. It all depends on what you want , if your comfortable with what you know in automotive diagnostics and don't need to learn any more than that's ok but if your like me and want to learn more at an advanced level that goes further in depth I think you will be amazed . I recommend the premium channel and I believe there is a 14 free trial as well. Take Care Steve.
Steve Rob Thanks Steve , but i am from kuwait the premium channel not avaliable here :) that is why i am asking :)
+Steve Rob thanks Steve. It's always better when it comes from others. Really appreciate it
Nice, another wire piercing tool on the market. Hello corrosion/high resistance in 3-5 years. Open up that pocket book Mr. Customer.
no, it's called liquid tape and it is made by permatex. If you work in the aftermarket like I do and work on 40 different car lines, sometimes you have no choice. You can't have a breakout box or leads for thousands of components.
Nothing wrong with what I did.
ScannerDanner
No disrespect, but any tool that encourages wire piercing IS going to fall in the hands of technicians that will not repair the pierce. Especially a piercing tool designed for hard to reach wires. This is an undeniable fact and we all have seen it. Unfortunately the automotive flat rate pay system causes technicians to take short cuts instead of lowering or removing components in there way of access.
"Unfortunately the automotive flat rate pay system causes technicians to take short cuts instead of lowering or removing components in there way of access."
These methods I use have nothing to do with the flat rate system and everything to do with accuracy. You say we should lower or remove components to test them?
Try unbolting some of these components (in the rust belt of PA) under the car and you snap every single bolt. And what if the component you are trying to access isn't even the problem?
Talk about wasting the customers money.
Then of course there are the intermittent issues and you need to prove the fault. What happens to a sticking solenoid after the vibration of you unbolting it from where it lives? It unsticks! And you CANNOT prove the fault anymore! See what I mean.
that probe is a little too thick, I think Phil could make a slimmer design for hard to spread connectors such as PCM wires, etc.
Wouldn't it be safer to test resistance/continuity to ground through the control driver circuit instead of sending an unknown/uncontrolled amount of current into a computers drivers circuit.
Can't you just use the power probe driver test mode?
You can
@ 14:19 ol la tors sells ALOT of brake jobs....
Ugh this is why I’m worried to do actual advanced electrical diagnosis. I have these tools but I don’t want to fry my computer.
first i really love what you do & thank you. if u have time..At 5:05 what would the control wire read if the solenoid was not open/bad? anyone ...?
Great question! This being a ground side switched solenoid, with the circuit off (not grounded) you should read the same as the feed wire (12v). With the circuit on (grounded) you will read near 0v.
Make sense?
There are variables to this too. An open coil like we had can actually read a bias voltage of 5-12v depending in system designs in the computer.