CDI unit testing. how to test bike cdi on multi meter. motorcycle cdi unit testing on multi meter 

Thanks for the quality lesson, very very helpful. It's always good to learn from someone who actually understands what they are teaching.

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

Brilliant, really informative. Always wondered how CDIs actually function. Thank you. Knowledge is Power!!!

Finally I have a good idea of what CDI is all about.i would really love to learn more about motorbikes.i want to be a proffesional bike repairer.thankyou for the insight.

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

Yes, you are correct, the bike Alternator, put out like 3 phase 400 volts, love your diagram.

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.

Thank you for your ability to articulate simply

Very good video. Love how he explains what each terminal is and what it does. Especially love how he kept poking and jabbing at the silicone! 😂😂😂

You Must!! Lol if you didnt learn anything you v must watch again . He says.!! You Da MaN !! The CDI Man!

Hos would you check, and which point is what on a cdi for Husqvarna 510 2010?

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)

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.

Very well put together video extremely helpful

My bike is sparking several times throughout one stroke, not just at TDC, and causing backfire etc, is this the cdi?

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.

You are a hero. 😅

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.

VERY informative, and simple! Love it

"Don't skip around" provides no info until 2:50

What if continuity beep one time instead of constantly and shows a reading is it bad?

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

Usually ac supply voltage is 40V and is amplified to 200v to ignition coil supply. Never measured 400v on supply to cdi

I have a 92 Honda trx300 could use a little help.

Very good explanation 👍🏻👍🏻

What about a 8 pin cdi does that only have 2 grounds or will anymore then 6 pin have 3 grounds ?

Great video !

Thank you Using good and easy English

please make video on AC vs DC using multimeter

Have you ever fix CDI for XV400 Virago?

Hi ! Thanks for this video. I have a question though! My CDI unit is not showing any shorts on the metre, but it is not working in my bike, i tried a different unit and the bike is running fine, can it be a problem in the wiring of the bike ?

Ahh... Ahh.. 😂 but this is helpful thanks

Do you know about cb 125 deluxe mono CDI pinouts and how to check 🙂🙂

أظن كتبت أنها تستعمل فى سوريا لو تعرف العربيه لو تكرمت أعد الفديو باللغه العربيه

i have current in almost all connections when checking for continuity

Thank you Jai Shri Ram

At 8:07, you're drawing has some differences between my cdi! My key/kill switch is where you indicate coil My alternator (black and red) are where you indicate key My coil is where you indicate alternator..

Is that CDI for quads as well

Smart man

Bahringer Fords

Test the dsm thing already. Yap yap yap,hook up the meter man.

hi I have a short in two right ones can you tell if it's normal , I think it's kill switch and ac power in

Bro I have a Honda magna 250cc the cdi unit is melting. The technician said it must be replaced. Your advice may be helpful. Pls

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 👏🏻👏🏻👏🏻

Just wanted to say, This has been a Lot of help!!

Ok forget it A.D.D kicking in...

Awesome video, from Australia, thank you

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!

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

Thank you I really enjoyed your lesson I'll be applying it tomorrow.

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

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

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.

Very goog explanation. Down to the components. You really know basic electronics. Thank You!

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Sir, can you please explain the cdi unit box having 10 pins mostly used in hero pleasure?

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.

Very nice 😊 Do the CDI are the same for 50 cc to 600 cc or the engine size have different AC CDI 😊 Thanks ☺️

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

Maybe I’ll just buy a new CDI unit and cross my fingers.

? 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

Eladio Lodge

What voltage should i be reading out of the pulser coil circuit? Green and blue wire

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.

Best video of cdi testing , very easy way of learning, thanks.

Pl ,advice, how to check cdi of honda unicorn 150 2005 model

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

Nah, Ya lost me at farenzhearing this video… at the start 🤦🏽‍♂️ why bother uploading if you couldnt simplify it.

great video. im going to try now on my bike and see if this is my issue.

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.

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.

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.

Very nice,the elusive cdi box,is it good or not,thank you!

Hi, Im getting a reading of .694 from Ground to Ground...G to G.? whats that telling me ?

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. *****

I love you 🎉 thanks so much grate video

What if I ride my bike with no battery.....will it damage my cdi unit???🇯🇲🙏🏽

I got voltage meter on my bike it was good on tach.

Thanks very impormative video

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

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

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?

Very helpful thank you, you earned a sub good sir!

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.

Dear Sir, Please tell me does mileage of motorcycle depends on the CDI unit?

This guy flexing on his doubters in the most passive aggressive way ever

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

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!

Very good video!! Thank you! Subscribed!

Great to the point video. Thanks !

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?

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 ?

My good cdi is shprted and my bad one is not

is it ac cdi or dc cdi..what kind is it??

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

How to test a icm on a 99 honda magna 750?

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

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.

Thank u for video help me alot, turns out my cdi is f***ed lol