Car Wiring Repair: Ultimate Guide to Finding, Testing and Fixing a Wiring Fault
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- เผยแพร่เมื่อ 29 มิ.ย. 2024
- Car Wiring Repair - How To Find, Test and Fix A Wiring Fault. In this comprehensive video guide, we delve into the world of car wiring repair. If you're tired of dealing with frustrating wiring faults in your car, this is the ultimate resource for you.
Tim’s here to share some valuable insights and step-by-step techniques to help you troubleshoot, identify, and effectively fix wiring faults, join us to master the art of car wiring repair and overcome those frustrating faults.
link.ecutesting.com/wiringfault
0:00 - Episode insight
1:05 - Vehicle wiring explained
1:47 - Wiring Common Faults
2:26 - Diagnosing automotive electrical problems
3:50 - How to troubleshoot automotive electrical problems
6:46 - How to repair a wiring harness
8:25 - Test terminal tension
9:18 - Terminal removal and Re-tension
10:18 - Outro - ยานยนต์และพาหนะ
🤨Have you ruled out a wiring fault but you’re still having problems with a module on your vehicle?🤬Click here to get it tested:➡link.ecutesting.com/WPIN
Where do you find those pin wire remover unlocking key tools and the name their known as ? I have Audi Q7 3.6L engine and I'm working on it myself. I also would like to know how do you or can we use our VCDS software to perform the ECU diagnostic test on it if so how do I carry it out step by step thank you.
This guy knocked my socks off in Transporter and then again in Transporter 2 and now he is helping me fix my car. What can't this guy do?
😂😂😂
Oh that why he looks familiar 😂😂
This guy is the real deal, been doing this stuff for over 40 years, and he's spot on.
I'm so glad that I found your channel. Please keep making this kinds of videos. The most important and useful information compressed in a 10+ minute videos are just the best. Wish you more subs.
Thank you so much! We're glad you are enjoying our channel!
Excellent explanation on electrical connectivity faults and corrections. More of the same contents please!
This guy is awesome.
Been having a massive problem with my bmw x3 and now i know what to do!
cheers from california
Another great video, thank you for this valuable tutorial, please post more, Cheers 😊
Excellent channel. Concise explainations without extra chatter. Thanks for taking the time to do these.
Thank you so much! We're glad you like our channel 👍
This is extremely good information demonstrated very well. Thank you.
Excellent explanation, thanks.
Brilliant stuff. Thanks for sharing some of your knowledge. Your videos are very well produced 👌🏻🔧👍🏻
Thank you so much! We appreciate it and are glad you like the video👍
Defo more of these please.
Excellent explanation thank you
Clear Excellent Explanation.
Just great! Thank you.
Great video!
Informative and easy to follow unlike most automotive wiring harnesses lol
Very good information greatly appreceated .
Great Auto Electric video that I will have to watch a couple of more times because it is really good and informative. Thank you ECU TESTING
Glad you found it useful and thanks for watching!
Excellent short video on car wiring testing & repair. One of the best I've seen on the basics of what to look for. I look forward to seeing your other videos. If you haven't done so already, a video on sensor wiring would be a good topic.
Thank you, we're glad you enjoyed the video! And thanks for your suggestion 👍
this is very helpful thank you
nice one Tim, yeah keep videos coming, thanks
Thanks for the feedback, we will keep them coming!
Great video
Good job thenks Mr teacher
Excellent
thank you for sharing knowledge best regards
Thanks for the kind words! We are glad you like the video👍
New here and I love it ♥️♥️♥️♥️♥️♥️♥️♥️
It helps to know the correct reading for the wires you are checking. And. Good luck finding a multimeter w/ wires that long. You’ll have to get the correct readings from factory manual.
Brilliantly explained. Thank you
Thank you, we're glad you liked the video!
Ever come to north dakota don't it's cold and my car has been in a shop for 2 fn months over a dam wire a wire, my mechanic is a ass hole he works on big business vehicles so little old me doesn't matter,having 2 special needs children and spending almost 10 grand on the car and paying fools to charge me 500.00 5 times and stilllllll no car 2 dam months 😢dam sorry for all the negative but it's hard without a car
Great video 👍
Thank you! Glad you enjoyed it 🙌
I live your videos im subbed and keep that type makes very simple ❤thanks alot
Thank you for the kind words, and thanks for subscribing!
thanks
Getting to the point where you know what terminals and connectors you are dealing with is the hard part, and actually getting to them
Thanks Sir.. love it.. done subcribe for more ❤
My favorite cars to test is the VW Jetta, specifically the ECM connector as they rivet a steel plate over the connector so that you can’t just easily remove it to test the systems :) thanks VW
Thanks. What is the typical wire gauge used in ECU connecters?
More please
Great information.. anything on ignition cools and injector tests thanks
Hi. We are glad you liked the video! We have a video that touches on how to diagnose a faulty injector here: th-cam.com/video/jF9atOqq3Mc/w-d-xo.html, however we do plan on making a more comprehensive guide on ignition coils and injectors at some point in the future!
Hello Big man I love your job and I really want be your friend am a car eletrician
If i wanted to check a coil pack connectors continuity do i have to remove battery terminals before doing so being the connector is still connected to the harness?
I had someone tell me that it’s not good to use solder because you’re mixing two metals. What are your thoughts on that?
Liked your video straight to the point myself I always use the dynamic voltage drop to get all I need positive side and neg side in all connections to find problems anyway where did you grab your tension key tools love them thanks again sub and liked looking forward to watchig more
Hi. We're glad you enjoyed the video! The terminal tension/pin tension tools can be hard to come by. Some suppliers sell these specific tools: www.autotechelectrical.com/ but if you are unable to source these, then a good alternative is getting terminal test lead attachments for your multimeter which will do the same job: www.hubitools.com/en/catalog/diagnostic-test-lead-set~0389d3b3-3acb-2bce-9ac0-39eabe1ce34f However these usually come in big kits which makes them fairly expensive. Finally, if those two options aren't for you, you can always buy replacement terminals/pins for the specific connector you're testing and use those! Hope that helps.
@@Ecutestinglimited Appreciate this thanks again.
Brilliant content as always so thankyou for that. Quick question. Where can you get those drag tool tester kits as i have the pin removal tools but not those and Google doesn't show anything.
Hi. We're glad you enjoyed the video! The drag tools can also be called terminal tension/pin tension tools but they can be hard to come by. Some suppliers sell these specific tools: www.autotechelectrical.com/ but if you are unable to source these, then a good alternative is getting terminal test lead attachments for your multimeter which will do the same job: www.hubitools.com/en/catalog/diagnostic-test-lead-set~0389d3b3-3acb-2bce-9ac0-39eabe1ce34f However these usually come in big kits which makes them fairly expensive. Finally, if those two options aren't for you, you can always buy replacement terminals/pins for your vehicle and use those! Hope that helps.
@@Ecutestinglimited brilliant thanks for taking the time to reply in your busy day.
@@the_retired_mechanic No problem at all. Let us know if you need anything else!
Always test your circuits dynamically
Yeah, a wire might seem good but can short or create open loop when moved.
Ideally, if your multimeter beeps when shorted, you can try shake the cables and connectors a bit and listen for interrupted beeping.
Thank you for the Video I need help with my 1.8 ,3 ,1994 Jetta if I switch on the car it cuts out the electronic coil I replaced 5 coils in a short time please can you help me Sir Thank you
I know this segment is upon wiring. I saw another video of yours which was speaking about codes for example P1254. I would like to know what does code P12A2 I have VCDS software yet nothing in code aspect states what the code is for a 07 Audi Q7 engine 3.6L V6 can you explain to me what that code is and direct me to check it for repair thank you.
Will the crimp sleeves create excess resistance to cause abnormal current flow in the CAN bus system?
Hi. If done with good technique, i.e a good strong contact is made and heatshrink is applied, then using crimp sleeves should not create excess resistance in the CAN bus system.
AND…. What setting are you using on Meter??
Please let us know where to get the needle type probe attachment for multimeter wires.
Hi. You can get these attachments as part of a multimeter accessory kit from automotive diagnostic equipment suppliers such as Pico Technology: www.picoauto.com/products/clips-and-adaptors/backpinning-probe-set
Alternatively, and depending on budget, you can get the needle/pin probes on their own from online retailers like Ebay or Amazon.
when diagnosing a short wire, how can i tell what voltage i should be reading on the multimeter?
@joyous6696, It would depend on circuit design, some are 12v some are 5v ref
is there one of these to help urgent
electrical professor
electrician
electric technician
my case :
( when i connect the multimeter red to red the + / and black probs ) . gives reading as continuity
important notes :
1 - NO BATTERY
2 - multimeter ON Diode mode " continuity"
- is that normal - ?!?!?!
6.47 you say to isolate the wire? Are you saying unplug from the connectors as in De pin but leave all the rest connected in the terminal blocks?
Hi. Yes, if you remove the affected wire's terminals (de-pin) from both connectors then the wire should be isolated from the circuit. Plug both connectors back in and test for continuity between battery ground or battery voltage depending on which you suspect it is shorted to. Hope that makes sense!
@@Ecutestinglimited it does thank you. I was just trying to suss out if you were doing it differently with them still connected.
Electrics are not everyone’s friend, especially mine. I came across your videos and enjoyed your explanation and theory. Instant subscriber thank you.
Hi i dont get the voltage drop test .You say to test from end to end will a multi meter pick this up without being connect to the negative?
Hi, very good question! Yes the multimeter will produce a reading even without being directly connected to a negative. This is because in order for current to flow through the wire, the circuit must be complete by being connected to a ground point. While you're not directly touching a ground point with your multimeter probes, the circuit itself is grounded through its connection to the battery's negative terminal or another grounding point. This shared ground ensures that all components in the circuit have a common reference point for electrical potential.
By placing one probe at the start of the wire (or one side of the component) and the other probe at the end (or the other side), you're measuring the voltage difference between these two points. This difference is the voltage drop, which occurs due to resistance in the wire or component. The multimeter doesn't need to "know" they share the same ground in an explicit sense; it simply measures the difference in electrical potential between the two points you're testing.
In the video, we have shown a simplified wiring diagram only showing the 12v power supply wire to the alternator, whereas for this circuit to be complete there would also be a ground wire going back to battery negative or a ground point on the vehicle (in most alternators this would be the casing of the alternator itself which is attached to the chassis). Hope this helps!
@Ecutestinglimited Of course. Thank you . Great videos by the way .I'm a spark of 30 years myself but working with single and 3 phase AC is a different ball game no where near as technical as ur game ,and I think my knowledge apart from using a multi meter is a hindrance more than a help when it comes to cars.That said I've never understood Canbus until I watched ur video today.and it's very much the same as testing and fault finding a ring main .
Thanks again mate
❤❤❤❤
Vw passat 2018(142k)i got EPC sign and engine light on. I put the new spark plug, throttle body, ignition coils and also cleaned the fuel injector but still its there. ANY SUGGESTIONS????
@Dilmohittt, What are the stored dtcs?
❤❤
👍
I am a beginner..can a technician use a analog multimeter to do this?
You can carry out the testing methods highlighted in this video using either an analogue or digital multimeter. However, a digital meter is always preferable as it offers more precision and reliability in results, especially when testing circuits dynamically such as during voltage drop testing. Also keep in mind that with analogue multimeters you will need to select the correct range when carrying out your tests to prevent damage to the multimeter. Hope this helps!
I was told a while ago that a lot of modern computer controlled cars have resistive cables ! So I'd assume that if you have to re solder a cable, the pc controller would know this and still flag up a fault ? Apparently.
Modern vehicles can use a variety of cable types, however resistive types are normally for specialised components and the majority of the vehicle's electrical system uses standard copper wiring in which a properly soldered joint shouldn't cause any problems. However, it is always worth consulting your vehicles repair manual or schematic to ensure you are following their guidelines.
in ilustration is write 0.062 ohms per 1m but when you speak you say 0.026 per meter, what is correct?
It should be 0.026Ω per meter of wire, apologies and thanks for spotting that!
Any chance of a battery drain diagnosis video
Thanks for your suggestion, we will look into this in the future!
Still don’t understand where in real life to put the multimeter cables
morning....have any ideea why my car dosent comunicate with CAN?my vcds says j533no comunicațional with CAN gateway...no comunicate with batery module...and generator...The car îs an a6 c6 year 2010....thank you very much
Hi. We have actually recently completed a video on diagnosing CAN bus faults here: th-cam.com/video/fZMNzKpCGfc/w-d-xo.html The video goes over some basic principles of the CAN bus network, however, as your system includes a gateway module, the diagnostic tests at the OBD2 port may not be the same. The fault will likely lie with either the gateway module or the alternator (generator), so you will need to unplug the alternator to see if the fault disappears. If it doesn't, then test the integrity of the communication wires between the two. Finally check the gateway module's power (sometimes fused) and grounds. Hope this helps!
@@Ecutestinglimited hello...i unbluged The alternator wire...and all The erorrs disapear....ca u tell me that u check next?should i duble check The alternator regulator ....install The corect Code ?
That indicates the alternator is faulty. We have done a video on diagnosing faults with the alternator here: th-cam.com/video/gpFlPU2HQkY/w-d-xo.html but as you have said, it is likely a fault with the voltage regulator. Depending on the model of alternator you have, the regulator can be replaced without needing to replace the whole alternator, however we would recommend getting this confirmed by a qualified mechanic who can advise you on your specific vehicle.
i think you are a prof
😂
EXXXXXXXCELLENT EXPLICATION CONGRATULATIONS FROM BRASIL PATRICK ( SUBSCRIBE ALREADY )
Crimp sleeve also known as a butt connector.
Hello, after longtime....😊
Here, 12V Vs 7V...
I have one Super CONFUSING VOLTAGES READINGS on door opened or closed status.
For example, in i20 2011 India version without LCD display on instrument cluster, the voltage at any door switch is SOLID 12V when door is closed, and immediately drops to SOLID 0V when it is opened.
Now, in today's modern car like Toyota Glanza and Toyata Taisor which has LCD display, and for the same situation, when door is closed from opened, the voltage remains at solid 12V, and after about 20 secs, the voltage drops to SOLID 7V.
As soon as door is opened, it changes to 0V.
Now, when the door is closed again from opened, the voltage immediately rises to SOLID 12V, and stays for about 20 seconds, and then only drops to 7V.
Now, why is this voltage drops delaying from 12 to 7??
What's the purpose or significance of this delay in voltage drops?
Why not immediately changed to 12V from 0?
Why 12V, and then later slowly to 7V???
Broken wire e.g. bad connection.
@@halweilbrenner9926 no ....
Its happening in Toyota Glanza and Taisor.
Wow, another "ultimate" guide in just 10 minutes, and that includes a 1 minute intro.
Gee, TH-cam is great.
What is “knot to knot .6” in American English? 1 to 1.6?
We are saying 'nought' which means 0. So it will be 0 to 0.6.
@@Ecutestinglimited awesome, thanks boss
One subscribe one like watching from Al Khafji Saudi Arabia 👍
Where you bought DRAGGING TOOLS?
Hi. We have answered this in another comment but here is the reply: "The drag tools can also be called terminal tension/pin tension tools but they can be hard to come by. Some suppliers sell these specific tools: www.autotechelectrical.com/ but if you are unable to source these, then a good alternative is getting terminal test lead attachments for your multimeter which will do the same job: www.hubitools.com/en/catalog/diagnostic-test-lead-set~0389d3b3-3acb-2bce-9ac0-39eabe1ce34f However these usually come in big kits which makes them fairly expensive. Finally, if those two options aren't for you, you can always buy replacement terminals/pins for your vehicle and use those! Hope that helps."
@@Ecutestinglimited Thanks.
"PromoSM" 😥
Man my battery keeps getting drained and I already changed the alternator :/
You have a parasitic drain then 👍🏼
If not fixed - Check battery terminal connectors and make sure they have a full connection, small terminals or loose connectors and be fixed with cutting and rewiring a new connector, or using a lead terminal shim to fill the gap. Used that to fix my Lexus ES300 parasitic drain. It's a good place to start.
Modern car wiring is absolutely crap. The computer systems are quite useless as they cannot tell you exactly what is wrong. Modules running various parts of the car should not need more than 4 wires for communication, this was supposed to be a bus system but instead there are bundles of wires going everywhere
my beef is main dealers, they rip people off,a friend of mine rang a renault dealer about a rattle under the car,they told him to bring it to them. they would scan it for £150, i as a mechanic know that a rattle would not find the problem, a complete rip off
i hope i have ur brain n open shop here and make money
Soldering is forbidden in automotive wiring repair!
the music ,,,,,is anoying i think you dont bring a radio in class do you ? just saying thanks