CDI unit testing. how to test bike cdi on multi meter. motorcycle cdi unit testing on multi meter
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- Here in this video you would learn how to test a bike or motorcycle cdi unit using a multi meter. CDI unists are very common now a days on motorcyle. CDI stands for capacitor discharge ignition system. It is very important to know and properly test the cdi box before replacing it in case if the bike is not starting.
#cdi
#ignition
#testing
Thanks for the quality lesson, very very helpful. It's always good to learn from someone who actually understands what they are teaching.
how much will it cost for you to rebuild my ktm cdi?
You Must!! Lol if you didnt learn anything you v must watch again . He says.!! You Da MaN !! The CDI Man!
Finally someone that knows how to break down the functionality, operations and how to test them on a CDI box. Thanks!! Your newest subscriber as of today.
Cant agree more!!!
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Ok forget it A.D.D kicking in...
Subbed, very good info in a straight forward manner, thank you for your vids, keep them coming, ive been workin on bikes about 30 years and the only CDI's i have repaired have all been a simple capacitor failure... replaced the main capacitor and they spring into life, your vid on the other components inside has opened up a new Avenue of learning for me, thank you sir 👏🏻👏🏻👏🏻
I agree. It's an excellent teaching and demo. Very practical and thorough. Thank you!
"Don't skip around" provides no info until 2:50
I agree it's nice to find somebody that can explain how it works from point to point and also show certain values you must have or you don't want thank you very much
Just wanted to say, This has been a Lot of help!!
My bike is sparking several times throughout one stroke, not just at TDC, and causing backfire etc, is this the cdi?
Brilliant, really informative. Always wondered how CDIs actually function. Thank you. Knowledge is Power!!!
Second that! Thanks and God bless! ❤
Thank you for this good explanation of what I've mostly always seen as black magic! Thanks to you, I got the bike running again. My ignition all tested out good, it turned out to be the kill switch!
Awesome video, from Australia, thank you
Very educational someone to show you exactly how it works and step by step how to test it very helpful I wish I had seen this video before I went and ordered a new cdi
Thank you
I really enjoyed your lesson
I'll be applying it tomorrow.
Very goog explanation. Down to the components. You really know basic electronics. Thank You!
Maybe I’ll just buy a new CDI unit and cross my fingers.
How would I wire a a/c racing cdi that is 6 pin 6 wire to the wire harness on bike that is 6 pin but 5 wire it is two square pin blocks one with 4 pins and other with 2 pins but only one wire so 6 pin 5 wire but cdi that I purchased is 6 pin 6 wire help please i have a 2024 apollo thunder rfz 250cc thanks
Hi. Is there a way to tell which CDI is AC and which is DC type? Just by measuring pins on CDI? They very often not marked and even sellers don't know what they are selling.
How much voltage an AC CDI recieves from magneto? Also, can I run an AC CDI on 12V 50Hz AC step down transformer for my project??? (I want continuous sparks at the spark plug)
Yo brainiack your plug diagram needs
The Alt. & coil switched black/yellow strip is going directly to the coil and is located top center not top right,
Thank your love how You got me started
U just drew diagram to fast brainiack is just a pun LOL
Thank you for the video. I need to make a homemade DC CDI for a motorcycle. I'm trying to understand how DC CDI alter the spark timing. Some of them have two trigger coils, one advanced and one at TDC. Somehow the CDI box switches to the advanced trigger at a certain rpm. Other designs only use one trigger coil and they advance the timing as rpm increase by some electronic means.
Do you have any videos explaining this? Is there a book I can read?
I really want to understand how that works.
Eladio Lodge
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Fantastic. Bought 3 of these Cdi’s and now can check see if any are good. Not only have you shown how to check them but also what each terminal does. This is info that doesn’t come with the cdi unit nor is it shown in any electrical manual- thank you very much.
Watch it 16 times still dont understand.
What part so I can help . Very simple tho
Omgf thank you sir Ive searched for videos to explain the function and diagnosis of my cdi on my 81 gs1100 thank you amazing video
Loo
O I l
Poll
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Lol
Best video of cdi testing , very easy way of learning, thanks.
Very nice 😊
Do the CDI are the same for 50 cc to 600 cc or the engine size have different AC CDI 😊
Thanks ☺️
At minute 5.35 i understood that this is for the AC-version, but i have the DC, you should clarify this in the title.
Hos would you check, and which point is what on a cdi for Husqvarna 510 2010?
Sir, can you please explain the cdi unit box having 10 pins mostly used in hero pleasure?
? Cdi is located on the fire wall close to engine maybe heat caused comonen5vaues change
If length of wire make impedene match0
my bike stopped idk if head gasket or if its ign and cdi. kick start nothing. it turned over w elec start but no running. gas n all was good. was going 70
Very helpful i was getting no spark and decided to watch this video and determine it was the cdi i ordered a new one hopefully thats the case thank you
أظن كتبت أنها تستعمل فى سوريا لو تعرف العربيه لو تكرمت أعد الفديو باللغه العربيه
Very nice,the elusive cdi box,is it good or not,thank you!
Very interesting video but way too long regarding the key question here. How to check the CDI with a multimeter? How to set up the multimeter and measurement points - good example bad example - done.
The internals of the CDi unit is another video subject all together as for a third how to open and repair one.
Video is available here on my channel for same cdi unit opening and repair. Thanks for watching.
I have 7 pins 3 up 4 down how i know what is ground? If i connect any possible connection must not close the system(not hear them sound from the multimeter)? Bike is yamaha 100cc crypton 2002
Follow the schematic diagram from OEM otherwise trace wires from the wiring harness.
is it ac cdi or dc cdi..what kind is it??
It's an ac CDI. Dc you can't evaluate in this way.
@@JahanZeb1976 .. thank you for sharing knowledge.,sir..im admire your skill...,you are brilliant..so detailed..and easy to understand..i think you are a great a professor..thank you im from philippines..
Thanks very impormative video
Very helpful thank you, you earned a sub good sir!
What voltage should i be reading out of the pulser coil circuit? Green and blue wire
Nah, Ya lost me at farenzhearing this video… at the start 🤦🏽♂️ why bother uploading if you couldnt simplify it.
Many people liked this video and obtained good knowledge from it. If you can't, this isn't my fault.
@@JahanZeb1976 youre right mate
My bike have 2 spark plugs and 2 ignition coils connected to single CDI box .. 1 of the spark plug is not producing spark I switched the wires coming to coil and the coil is working. So the wire coming from cdi to 1 coil is not getting any voltage.. i am confused how 2 ignition coils are connected to 1 cdi box can someone explain the circuit diagram.
I'm not sure about your bike make and model. But you can check if two separate wires are coming to two ignition coils, then this is a twin cdi or double cdi unit in 1 box. And you have 1 bad cdi out of two. Replacement should give solution to your no spark problem. Regards,
Hi bro i have a bullet classic 350cc i am going through a missing problem i check the spark plugs its all in good condition . I check the tps i replaced with new still having the same problem. I am guessing will it be CDI problem for the missing problem I'm getting in my bike please help me out if u can.
Thorow checking and testing is required. Cdi could be a reason.
Very nice video thank you..... please explain if hard material (instead of soft silicon) how to remove by providing heat. Pls share new video explaining same
Yes. Good comment. I will bring videos on that too here on my channel.
Pl ,advice, how to check cdi of honda unicorn 150 2005 model
Awesome ❤ , I have a question how do I set the pulse discharge rate of CDI and how do I configure the discharge rate is there any formula in the factor of cc, displacement or something.
Thanks. For parameter adjustments, you may design your own microcontroller based cdi unit and program it in the way you want. Wishing you good luck.
What if continuity beep one time instead of constantly and shows a reading is it bad?
Test the dsm thing already. Yap yap yap,hook up the meter man.
Very good video!! Thank you! Subscribed!
I have a 92 Honda trx300 could use a little help.
Best video explaining the CDI and I highly recommend watching if you are a mechanic and want to know HOW ELECTRIC COMPONENTS WORK this is the video for you. Thank you for the complete explanation. *****
Hi, Im getting a reading of .694 from Ground to Ground...G to G.? whats that telling me ?
That's ok
I love you 🎉 thanks so much grate video
great video. im going to try now on my bike and see if this is my issue.
Hello. I am currently trying to fix my son's speedfight 2 LC 50cc scooter. No spark is present. The wiring loom has a 5 pin CDI fitted and also the original 8 pin dellorto CDI/oil pump unit fitted. The bike did start when first purchased, with difficulty. Any ideas how to solve the issue?
What if I ride my bike with no battery.....will it damage my cdi unit???🇯🇲🙏🏽
No.
Not many people know, electronic engineers included. AC[ yours] or DC powered CDI unit ? I'm sure you know pin out test values change with different components inside, just as critical is the CDI for a 2 stroke or 4 stroke because it won't start. 2t double the spark and different timing curve[retards]. I have bought a few cdi by guessing as most sellers don't know either way.
please make video on AC vs DC using multimeter
This is a great video 👍 Can you please explain how I would check a cdi for a Suzuki Eiger 400 4x4 manual shift as this cdi has 16 posts, they are in groups of 4. If you can help me out that would be great.
Thank you,
Duane
Nice explanation. 4:33 So basically, that constant "On / Off" thing that's happening in that cycle is a similar thing to how an old distributer cap works that older carburettor engines of cars use?
Hi there, i don't know if anyone sees this comment or not but would like to give it a shot. I have an AC CDI with 50cc scooter, turn key no light, after starting scooter lights gets on and pretty low with flickering unless i'm giving gas which speeds up stator and in that way gets bright... That cause my head light bulb pops every couple of month... Is there any way on wire configuration on my CDI to change all lights feeds from battery rather than stator? Thanks in advance!
I got voltage meter on my bike it was good on tach.
Thanks for the video but next time I need to know how to test the ignition coil.
Yes sure. Stay tuned. In next some video i will show testing of ignition coil.
Sir, I brought cdi unit for my bike from authorized dealer and it is not working, when I asked the spares shop, they saying there might be short circuit and it has no warranty. Do anyone know the service/repair shop in chennai, who can test & repair that new cdi unit
Dear Sir,
Please tell me does mileage of motorcycle depends on the CDI unit?
Up to some extent. If you have bad cdi unit, you can have poor millage.
My CDI box looks exactly the same but has a seperate wire coming out of the bottom left of the box. How would I test that wire? I'm getting no spark, I've ruled out plug and coil, now testing CDI and next I will test the stator. I hope it's not a wire somewhere. They're tied up in factory wire harnesses and I will likely cause more issues if I have to cut in and open up all the harnesses so I'm hoping my issue is just a part I can replace.
“DoNt SkiP ArOunD” skips to 11:00 in
This guy flexing on his doubters in the most passive aggressive way ever
Look at the information provided.
Thks four your excellent video I have a Piaggio Zip 2T other day I drive and same one stop me and tell me my rear lights is blinking after 2 days all my lights is blown front and rear I’m surprise my fuse don’t blown also when I drive in full throttle same times is cut don’t the speed what you think is my regulator fault thank you help appreciate
realise this is f or ac electrical system dc is 12 volts I have no sprk condition and have ordered new dc box for my bike with battery (dc) and will let you know how it turns out.
0
The diagram shows the pulse trigger connected to ground, should this not give continuity when testing pins (9:08)? My CDI has continuity to ground via the trigger or alt coil, not sure which one....Or am I reading your diagram wrong.. Thanks
very important video. keep it up
So should there always be 2 grounds on every cdi ? If you hold the terminals on the 2 grounds will it beep & is that normal ?
Sir can ask whole diagram wiring connection of motorcycle rusi GY6.. your kindness is highly appreciated sir.. thank you so much
Rusi are not here. Anyhow you can use another motorcycle circuit on any other motorcycle
My good cdi is shprted and my bad one is not
Ahh... Ahh.. 😂 but this is helpful thanks
Great knowledge & I love how you talk about your knowledge and how you’re basic all knowing in such. A. Matter of fact ways then Proceed to explain how he used to make Them from scratch which nobody has ever done.which noone would ever expect someone. To. Sssay that
greetings, the video is excellent, I just want to know something, my cdi on the multimeter does not show any voltage on any of the pins, is this a sign that it is correct or not, Thanx
Thanks for liking. You should find voltage on alternator pin when you kick your bike. Voltage could be up to 50v ac. This is the main feed to cdi on which the cdi unit works. If you don't find such voltage, remove the connector from the cdi and check the voltage again. If still no voltage, you have a bad alternator coil. If you get voltage off connector on kicking, you have a shorted cdi. Also give attention to cdi ground wire and kill switch wire. Some times they are responsible for fault. Regards،
@@JahanZeb1976 Thanks for the reply, Alternator or coils, whatever you call them, give voltage, I connected it to the multimeter plus to the pickup and ground on the chassis, it shows a voltage of 150, when I start to crank the voltage increases
and the bomb, when I connect the plus to the pipe where the spark plug goes, nothing happens, and when I connect the normal plus and minus on the bomb, it records and shows some voltage for a short time, and so on
Great to the point video. Thanks !
Hi there guys, my tl1000s just cuts out when im riding it. im not to sure if its my cdi box, my fuel pressure, or a sensor? any help
How to test a icm on a 99 honda magna 750?
Thank you this video was very helpful. I am checking a Denso unit for a Suzuki GSG650, a bit different but I found continuity, so will pursue this and hopefully have my bike running fine again.
Thank you so much for providing such a detailed and thorough explanation. I now understand not only how to test a CDI but also how to make or repair one. Thank you!
What about a 8 pin cdi does that only have 2 grounds or will anymore then 6 pin have 3 grounds ?
Thank u for video help me alot, turns out my cdi is f***ed lol
There is a repair video too on my channel. After watching that you will know how easily you can repair your f***Ed CDI.
This is the best video I've seen for understanding the cdi. I can now apply the basic concept to a cdi on larger bikes. Could you do a video for larger CDIs, please? On a bike with 2 coils/sparkplug, there should be a ground wire and two ignition wires to the coils plus the pulse wire for a total 5.. But what are all the extra wires for? (In my case 4 extra wires) Temperature sensors, kill switch? I'm confused. Online wiring diagrams explain only the color codes, not the function of each post. Thanks
I'm sorry as such bikes are not around me here. If I'll get a chance, sure I'll do video on such cdis. Best wishes.
Thank you so much for sharing this great knowledge. Its useful to test them if a quad or bike isn't worth fixing. One question is how come the current flows back towards cdi unit to the (+ plus) of capacitor instead of going to coil and then plug.???
Like current from a DC battery goes from Positive to negative
Current actually flow negative to positive. It is the movement of electrons, not protons.
DC electrical - current flows from the neg. to the pos. as taught in eletronics theory the electrons move thru the depletion zone to the holes. and it's proven in application, that this is what happens. the confusion is the fault of a long ago guy that was believed to be "cock of the walk" & "told" the eletronic community, that is how it is, so they printed hundred of books & taught this for years, until it was disproved. so the fix was ; the books, schematics, ect. was called conventinal current flow. which aligned with thier system. a lot of teachers & books will say if it is actual current flow or conventional. as a student of electronics , one must do the inversion in your head for hands on field applications
Is posible to fix a bad cdi or it needs replaced?
Thank you
There is a video following this video on my channel showing repair of this defective cdi unit. Watch that video. It will give you great understanding on repairing such defective video.
******* I CAN BARELY UNDERSTAND YOU.*********
Sorry I can't help you. If you would be in need, you will understand me well. Full stomach talks Persian.
My activa is return from two mechanics without repair due to high repair cost and non releavent expenses now I am sure I will repair my activa at home
Very useful information for me in dentails. I have analog multimeter old type but still it is working and it is useful today also
Thanks
Thank you for your video. i thought my cdi was bad, but your video and my testing shows that its ok. I still have intermittent spark to still troubleshoot. The coil checks good. but not sure yet on rectifier or maybe crank sensor or bad wiring on my 150cc Lifan
i have reading of 500 ground and alternator. is it considered no continuity
I have a xl degree 250cc, for alternator pin that you have demonstrated on the diagram, I have the supply for the ignition coil connected to it
I get it now there sorta like the old points and condensor in old ignition sysyems only now done with micro processor parts,cool.snooky pa.
7:45
Could you tell us how this works relating to each terminal?
1 Is Pulse, but what pulses it, the alternator/stator?
2 Is Ground (I get that)
3 Is sometimes ground, sometimes NC, a lot of explanation
would be appreciated on this pin.
4 Is Alternator/Stator, (doing what?) ''alt power'' power coming
from the alt?
5 Is 'coil' , so is this power pulsing to the coil positive? (I guess it its)
Thanks!
Yes, all your understanding is right and well.
Have you ever fix CDI for XV400 Virago?
Thank you for your video! Helped save me from a bollocking from my boss😂 PS New subscriber from UK from now
Excellent video - I wish I could send my inline 4 motorbike issues so you could help diagnose