P0340 Cam Sensor Circuit Code (New Sensor Installed)
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- čas přidán 29. 01. 2019
- The vehicle being tested is 2010 Jeep Wrangler but the tests shown in the video apply to hall effect type cam, crank and speed sensors.
Video Breakdown:
Introduction clip
:52 - customer complaint (cam sensor fault code P0340)
1:32 - fault code list
3:57 - clearing and re-creating the code
4:30 - know your circuit designs! (ScannerDanner Premium)
5:45 - Snap-on guided component test meter for help with wiring
6:50 - pin voltage tests
7:50 - confirmed signal circuit integrity (engine computer is NOT the problem!)
8:40 - what the cam sensor signal looks like with engine running
11:00 - internal design of a "pull-down" type hall effect (picture from my book)
11:10 - step by step flow chart (picture from my book)
11:22 - description, operation and testing (picture from my book)
11:42 - making sure the pins were wired correctly (new harness connector was previously installed)
14:00 - inspecting the cam sensor for damage
15:36 - hand drawn picture of the trigger wheel
16:44 - visual of the trigger wheel (tone ring, cam sprocket)
17:53 - trigger the sensor with a piece of metal
20:00 - switching the 5v ref and ground on the sensor (was it wired backwards?)
26:35 - some bonus material provided by ScannerDanner Premium taken from this lecture www.scannerdanner.com/scanner...
28:17 - what a pull-down circuit looks like in a hall effect sensor
32:00 - how fast a pull-down type circuit can be tested (end of SD Premium portion)
32:42 - back to the Jeep with a new cam sensor
33:00 - how to set a proper air gap on an adjustable sensor
34:48 - comparing the old sensor to the new sensor when triggered with a piece of metal
37:00 - start-up with the new sensor (long crank time is fixed, code is gone, what scan data PIDs look like with a working sensor and what a good waveform should look like)
40:10 - final wrap up pf what we did and where to get more training (ScannerDanner Premium www.scannerdanner.com)
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.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
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. - Auta a dopravní prostředky
This is so cool! This all sounded so intimidating to me at the beginning of the video. I mean, a brand new part was put in and still didn't work... I can totally understand why someone (like me) would then suspect the computer was the culprit. A professional garage had this car and they were ready to call the computer. But you used your amazing teaching of simple circuit design to figure out the computer was functioning just fine, the wiring was fine, so the brand new part had to be the culprit. Man, I just love your book! I just finished a couple of days ago reading it all the way through for the third time. I'm actually starting to get this stuff. What seemed so complicated is beginning to seem kind of simple. That's a sign of a good teacher! I was eating lunch in a restaurant after church today and telling someone about your book. Thanks for making what seems so complicated actually understandable!
Just wanted to say a quick thank you to all of you that support what I am doing. As a lot of you know, ad revenue alone does not pay enough to justify the time involved to produce these types of videos. With filming and editing, there is probably over 15 hours in what you just watched. This is why other creators ask for Patreon donations! I've been asked why I don't offer this, and the reason I don't is because of my Premium channel and book. Instead of supporting me with a donation here, you can support me and get something back in return! In my opinion, what I offer is better than just a donation. If you are dedicated and really want to learn this stuff, my Premium channel and videos can change your life! So consider signing up for my 14 day free trial and at least check it out. Thanks so much for helping me make this possible. www.scannerdanner.com/join-scannerdanner-premium/subscribe-to/3-scannerdanner-premium.html
The best instructor in my opinion thanks Paul
As soon as I finish the book I'll be signing up.
I’m a member and a SD Premium and supporter. It’s worth every cent and I just feel that I owe him for all his time and effort and also his teaching when I 1st got started in the real life of diagnostics. Now I’m a bad ass just like him. His book is a great learning tool and most of all a great reference book just in case you forget how certain things work.
The SD Premium channel is absolutely wonderful any many ways.
Paul, you def get more than just "a little back". Before the days of youtube, in the late 80's early 90's, I always wanted to make a VCR tape of how to diagnose computer controlled cars...but didnt have knowledge or experience (thank God when OBD2 came along and digital recording). When I came across your vids I was like YEA! And when you confirmed importance of the voltage test over the ohms test, again Yea! Your not only a great tech but even better at verbalizing what you are doing....but a God fearing great family man w/a lovely family. Thx for your troubles. We the viewers def appreciate you
@@wenseslao521 Thank you so much
Nice 6years as a tech and still learning thanks man...
It is nice to hear someone say the words "I am not familiar" it keeps you human and honest. Ty
Great video danner we appreciate every single moment of your time trying to teach us new things .. thanks
I sole ‘proprietored’ an electronics repair shop for many years ..and replaced many he sensors ..this is a great forensic breakdown of the application and use/design of these simple electro-mechanical active devices ..great job Dan ..
172,000 subscribers. CZcams is still living u. Great vid. Like the good old days.
1) I cannot believe that I have been so into this that it's already past midnight.
2) Don't take this as an insult, but now (as a bush mechanic without the scan tools) I don't feel quit so silly trying to find a crank but no start issue on my own vehicle. I see that even a pro such as yourself can begin to start scratching his head as to what may be going on.
I certainly appreciate the video's and pro-tips that you post on CZcams!
Thanks
Great demonstration! Absolutely love watching your videos
Before I started watching your videos (and others) I never had a way to "see" electrical signals. Having a scope and the ability to see electricity had made understanding systems so much easier. The fix gave me goosebumps too. :)
haha for sure! And to those without a scope, it does help to see it so you know what you are looking for on your DMM and what the weaknesses are.
Top shelf stuff again Mr Danner.
Stay gold.
I'm blown away. You sir are a real badass. Thankyou so much. I've got a Mercedes with cam correlation code, yet the visual inspection shows timing is not off
As always great case study! 👍
Perfect as usual my professional teacher
Thanks for clear explanation regarding malfunction of sensor circuit.
Love your detail in your content. I would enjoy your book I bet. I was an instructor for 12 years in the motorcycle industry and we often used your videos in class to get a deeper understanding in the "scan" world as it is finally being encompassed in the 2-wheeled world. I work for an OE now in training. Hope to connect sometime. Once again I get all the work and time you put into this as I have over 600 videos myself on my channel, so from one creator to another...thank you "Keep Wrenching" Shane Conley-How2Wrench
Thanks Shane! I'm going to go check out your channel now.
Yes, I have also had quite a few questionable new parts. Seems like a lot of them are made by the same manufacturer, just put in another brand's box . Paul this is were your training is so valuable, by knowing how the basics in the system work you can fight your thru to a successful repair. Don't be a parts changer! It's great that you are bringing content to you tube it shows people how important your paid in depth training really is.
I have seen your videos ( You Tube and paid) many times, and each time I pick up something new. NEVER stop learning ! Thanks Paul
Thanks Steven! Do you think I included too much of the classroom lecture (SD Premium stuff) on this one? Maybe I should have kept it to 3 minutes instead of 6? I felt like it was a good time to show the lecture and how much it totally applied to this situation. It is always tough to call a bad new part and knowing circuit design was the key.
Your video is really fun to watch. I’m fixing my own car. I thought if you know how to turn bolts and nuts it can be fixing the repair I need to do in my car, but I’m picking up something on this video training demonstration. Thanks and God bless you.
Each and every video I learn something ,am still budget soon I will buy the ebook 😍😍😍😍 I can't wait
This guys got skills! I’m learning so much from your channel. Keep it up 👍
Thanks for the sub!
Always interesting and informative. You are the best. Thank you for sharing, professor.
Hoo-Rah!
Paul I have seen quite a few videos of replacement electronic equipment being faulty. In fact, diagnose Dan just recently posted a video of two defective wheel speed sensors being defective. Makes it tough for the diyer because some electrical components are not returnable and we would question our troubleshooting So glad I have your book and class. Get the book guys will save you a lot of grief. ❤️️
Wow this is the perfect mechanic teacher, great job thanks 👍
Great information. Now if I can remember it all. At least I can reference back to this video, thanks so much
Old Timer Mechanic: Great Video!
This was fantastic! Been fighting this on my 2015 Rubicon for weeks.
I'm an Electrical Engineer for an aerospace company, and while the schematics I had were somewhat helpful, your description of the sensor role in-circuit helped out.
I was about to relinquish control of the troubleshooting to the dealership, but after watching this, I'm eager to jump back in. After I changed the shocks out, I think something I think I just disturbed something in one of the wiring harnesses. Likely just shorting to an adjacent line. Will post results when I get shop time. Thank you!
Looking forward to it!
So?
@@TheRoadLessChosen Code was wrong.....suggested to replace the bank 1 Camshaft Pos sensor and it ended up being the bank 2 camshaft position sensor.... or vice versa. Reading the resistance between the pins on the sensor showed different resistances. Replaced the camshaft position sensor on the opposite side that it suggested and it fixed it. Never came back....
NO NO NONSENSE DIAGNOSIS AND REPAIR .
THANKS FOR SHARING THE KNOWLEDGE
My friend, your channel has just become a treasure to me. After 4 years trying to diagnose a P0335 code in my Vauxhall Astra which starts & drives perfectly and doing everything but buy a new car to stop it, I am now really getting to learn what 'other' problems might be tricking the computer into believing it's one thing but is in fact emanating from another. As I am analytically minded and interested in engineering etc but not qualified as a mechanic or tech, these are brilliant instructional videos bud, really top draw stuff. The faulty cam sensor video triggering the CKP error was a light bulb moment for me, and one I am now going to start testing for. You know your beans that's for sure.
Welcome and thank you!
Thanks for letting us know more about auto electric and electronics
very interesting trying to follow your logic an direction in how you fault find an fix the issue your faced with ...as i said very interesting watching your problem solving skills cheers
Best cam/crank sensor video I have seen
Thank you!
👍🏻 brilliant, great to watch , keep up the good work
Awesome video Paul, thats why I am a paid subscriber. Like the way you detailed function wise. how the CPU is interpreting the return signal via the voltage drop across internal CPU resistor, when Transistor opens and shorts to ground. Well done.
Much appreciated! Thank you so much for supporting what I'm doing, even when I drop a good video on the free channel 😉
Thumbs up sir.your are a great technician,mechanic,teacher,,,thanks so much for those lots of videos,,im a big fan sir!
It never gets old watching you, hope and pray you and your faimly are OK and God bless you all
Thanks Paul!
Thank you sir, i wish i was told this when I was in tech school. It would of made my job as an instructor easier. 👍🏾👍🏾👍🏾
thank you getting back to me i figured it out with your help i did a voltage tested on the new cam sensor to find out the sensor was bad i brought a new one and I'm up and running again thank you for your video
Bad new parts is absolutely plaguing our industry right now. More than I have ever seen in 30 years
Superb video Paul ....Many Thanks 👍🏻
Awesome- great video. Thanks. Like the info about the pull down circuitry !
This is incredibly helpful. Thanks so much, Dan. You do man!
Thank you! My name is Paul Danner 😉
I'm with he needs to be paid in gold bricks he is a computer running and he understands everything about it great teacher as well thank u for this video u just taught me so much going to be paying u some money u deserve every penny!!
Fantastic Videos and with precised information, Thanks me gaining Hands on Experience
Paul you actually sounded like you knew what you were talking about this time. lol Seriously though a newbie coming along could pick up a lot of info in this video. Good stuff!
I've been learning a lot by watching you and south main auto I give you two the credit for teaching me how to check crank and cam sensors in my wife's jeep bad brand new cam sensor
Eric is the man @SouthMainAutoChannel Thank you!
@@ScannerDanner you both are
It's a must to do full scan I've gotten a few tips from a code in the TCM not registered in the MiL.
I'm still on the previous update no auto codes and fast code scan. Looks awesome.
Sign up for Paul's premium channel, you will not regret it! Paul you have absolutely made me a better technician and have a great style of teaching.
Great video as always!
I enjoyed your last couple as well FRM!
Thanks Paul, great video. I am a member of your premium channel and have your book. I just want to say this really messed my mind up because in all your lectures you always show the transistor being a part of the PCM and with the cam sensor it is internal to it. I just wanted to point this out because your students may have the same problem understanding the pull up and pull down design when the transistor is moved.
Keep watching my friend. I have a ton of lectures showing the difference with "electronic switch inputs". This video had a clip in it from on of many lectures on this topic. Also spend some time in chapter 21 in my hall effect lectures too. Thanks again!
Ahhh, now for the curve ball, some coil on plug ignitions have the transistor in the coil itself (usually 3 wire coils) and some have the transistor in the coil AND an additional 4th wire as a "check" wire to see if the coil has fired properly.
This guys the best because of the complete explanation thanks man
Thank you!
I was reviewed this video, is exelente amigo scanner Danner. Dios te bendiga.
Thanks for sharing your knowledge n experience.
So well explained and informed thanks very much and very helpful
Πολύ καλό βίντεο σας ευχαριστώ πολύ
This guy needs to be paid in gold bricks.
Wish I had seen this a few months ago... My subscription to this channel and the premium channel.... Earned! 👍
Oh, and I bought the paper book, too...
Thank you so much! Look forward to watching your progression!
Thank you, You just helped me troubleshoot and solve a crank no start problem!
Sweet! Thanks for the comment
Perfect as always!!!
Another amazing video from one of the greatest automotive teachers out there! Keep up the great work!
Yes, Paul is a gifted teacher and an asset to all of us who diagnose vehicles.
thank you so much Nick
@@parochial2356 thank you so much
Great Information. Awesome Job!
AHHHHHHH! you would not believe how many months or mechanics ive gone through before I was finally able to get an honest mechanic to tell me to check that part!!! in 6 months time before it actually gave out it never threw that code 340!!! nor did the check engine light come on! it was just starting whenever it felt like it and eventually took its toll on the battery as well. i replaced the sensor and the battery. car started right up but a longer start time for sure and the check engine light goes on??? still on 4 months later! code never cleared! wont pass smog because nothing reset! then my dear? i found you! and this!!! and i had a feeling all along it was a bad part because of the longer start time and then same code during smog check!!! and because im a woman i can get away with telling you that the scream at the start of my comment was me having an incredible BIG O!!! lmao! your my hero! but i still hate my concord! only 80k miles on this 2000 but have had to replace bcm, fuel rail, both fans and motors!!! then this issue!!! so one more issue and im taking it to the desert outskirts to shoot it and leave it with all the other ponies shot and left out to the elements! hahaha
Perfect as always..Thank you so much..
Soo nice from you the explication is clear and fun
Another Great class thanks for share Paul 👍👌🔧🔧
Thanks you so much, you have inspired me a lot, perhaps I will make a video here on CZcams to send special thanks to you guys
Man your great and lots of help thanks from libya
This is a great video. Good information
i like this mechanic very much 🙂
great videos and information . Thanks for sharing
Great video again..!
Man, that was cool to watch. I’m just a DIY car guy and new at it, but I’m trying to learn. I recently changed my cam sensor in my 02 Jeep WJ and all I could find locally was Dorman. I put it in and code and stalling went away. Guess I got lucky? I didn’t set any air gap or anything 😬? Again, guess I got lucky. Thanks for the video
You are awesome! !!
Thank you !!
Thanks for showing the schematic at 11:00
It's getting harder to get new parts you can trust. Although with Chrysler CMP and O2 sensors, OEM is your best bet.(if you can afford them) Thanks for the excellent vid.
anti chuckle list oem for that sensor Chrysler is $97. Autozone $57 for who knows what quality. Online oem $63 if you can wait. Might get a discount if you talk the dealer into it. Overall, what’s your time worth. I want it done the first time and I want it to last so I shoot for oem or very high quality aftermarket. Autozone or Napa garbage can stay on their shelf.
Outstanding job thanks
Good quality video and nice dinostics.
Very informative
Concerning bad parts (specially electrical) when I purchase a replacement part I ALWAYS perform a test to see if it is working as it's supposed to before installing it!.Safe me both some valuable time and unessesary frustration!
Golden information once again I would hang this disposable plate on my Mens cave and store it inside a Picture Frame, it's like having the Moses collection on DVDs 📀
Thank of you support
thank you from barcelona
Vary very nice test good thanks
Great job 👍
A new Danner video. It's going to be a long 10 o'clock break. Better make some more coffee.
Brilliant 🤩
very good my brother
Good job 👏
awesome video.
Very good video thank you very much
Good stuff 👍 chief
Hey Paul love the videos keep up the great work. was wondering if you’ve ever thought about doing a quick vid on some of your favorite diagnostic tools that you use. T pins def became my best friend since I saw you recommend them but what else do you like
I work in an auto parts shop. Recently we identified an issue with 3 different aftermarket suppliers of ignition coil to suit Toyota 3SGE motor where none of them would work in the Altezza yet as far as we know they work fine in every other Toyota that uses that motor. Only genuine would work. The PCM must be extra fussy about feedback signal or current draw in that model.
Exselete diagnostic amigo nice video
Great video. I guess by looking at the data it made a difference on the cam sync and cam difference. Maybe just by looking at . you can see possible sensor failure.
yeah, sometimes it helps to look at data, in this case knowing this was a hard fault with the sensor, it really wasn't necessary but I always like to try to show all the available testing methods
you are great bro
Try sticking an allan key in a cordless drill and spinning it in front of your sensor, for crank sensors you can get the rev counter to work
nice idea
Awesome. South Africa
Even in the Chrysler shop manual it is often confusing if the connector diagram is looking at the end of the connector or the backside (or into sensor), plus not always easy to tell which side is the locking tab. Seems they could spell it out better, or perhaps it is in a little footnote somewhere. Looks like this might be the Chrysler 3.8L like in our 2002 minivan. I know that some Jeeps got that (longitudinal version), instead of the 4.0L straight-six. A fine engine, but many Jeep fans berated it. I recall in my minivan the supply voltage is 8 VDC, shared with the crank sensor. The cam sensor looks identical. The 0.6 V you see is about the forward drop of a diode. A transistor is somewhat like two diodes in series, so if one "diode" is failed shorted, you might see a 0.6 V drop when it should be off, but I'll let an EE comment. I do know that transistors most commonly fail shorted.
Great one.
I remember on the earlier model 3.3 and 3.8's bad crank sensor would throw a cam sensor code,also remember the early saturn's with the 1.9's would throw a cam sensor code and they didn't have a cam sensor
Thank you