Turn Signals Not Working Diagnostics (17 GMC Acadia)

Подписаться 127 тыс.

Просмотров 13 тыс.

50% 1

In this video you’ll see the Professor go over a diagnostics that Andrew recently did on a 2017 GMC Acadia. The passenger turn signals don’t work on the front or rear. They all went out at the same time. The drivers side and hazards work perfectly. He will go step by step through the test plan and then show you the fix at the end. We hope this helps! Enjoy!
ATS 8 Channel Scope: www.aeswave.co... www.aeswave.co...
Our Affiliate Store:
Autel MS909 Scanner: amzn.to/4bVbXQ2
Top Don Battery Maintainer & Jump Starter: amzn.to/4bW0dwB
Topdon Phoenix Lite 2 Scanner: amzn.to/3wJMEBz
Brake Fluid & Coolant Test Strips: amzn.to/4ayOQJS
5 Piece Protective Lug Nut Socket Set: amzn.to/453c4GW
Fluke Multimeter: amzn.to/3UX86La
We are partnered with AESWave. We've dealt with them for years and they are great people so please show your support to them! Our store link is:
www.aeswave.co...
Yes we make commission on these products if you buy from these links. This supports the channel. We will never recommend a product that we don't truly believe in. This is just the beginning of our products. We will add more as we go.

Опубликовано:

30 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 77

@EATSLEEPFARM Год назад

This channel is one of the best automotive channels on youtube. Showing the full process is so refreshing to see. Keep it up guys 👍

@AlanBurnham Год назад

Maybe it was done off camera but I didn't see any verification that the problem wasn't in the BCM connector before the BCM was called. IMHO, before condemning the BCM, a small amp test light should have been used to confirm a small load could be carried between the front of female terminal in the wiring harness connector and the point where the wiring harness was tapped for the scope. Great methodical diagnosis other than that. Enough detail to understand and enough edited out to make it short enough to stay interesting.

@sanagavizharan92 Год назад

There's a tsb on these where the ac box drain can leak out ontop of the bcm and cause some interesting electrical issues along with green crusties in the connectors

@johnmitchell2741 11 месяцев назад

I believe they should be looked at first before attempting any repairs could save you a lot of grief

@mikesautomotivediagnostics8080 Год назад

By hooking your test light to ground, and touching the input pin while watching the input data, it would show active if the BCM was good.

@clivewright7778 Год назад

A power probe is a very dangerous tool in the wrong hands . I love the power probe but there should be more warning about pushing that button

@joeydeemendoza Год назад

LOVE yalls diagnostics videos you guys are absolute gurus thank u for sharing your knowledge with us!

@calebmohler3082 Год назад

Great video, I'd have no problem using a test light to B+ and making sure it light when switch is in right position........

@Mdavied2023 7 месяцев назад

when you started diagnosing using Scanner, you checked if there was any signal from switch to body module. my question.........why you didn't command on active test the right signal using scanner before using scope? when the control body module didnt see any signal i thought the problem is between switch to the body module i thought the diagnosis procedure using scanner is ..........check signal using switch ........then command active test the actuator or motor to eliminate it. i really love your explanation and and strategy when you diagnosis thanks

@DependableAutoTruck Год назад

really good video great information wasn't sure which way to go after the scanner didn't show anything. it might have thrown me down a rabbit whole, i probably would have applied ground on the wire for right side at the BCM to see if anything happened. thanks for sharing learn something either different or new every time i watch a video from you thanks again

@vickenkaragozian2041 Год назад

The Escope shines always. The body control module should send 12v to both left & right turn signal circuits when turn signals are in neutral position. When you turn the turn signal to left or right the switch will ground the wire. The Escope has bias voltage negative 2.5v. That's awesome, so when you have a the test lead connected to a wire the red light should turn to gray light. The great thing is if you loose connection the voltage will go to minus 2.5v , but if the circuit touches to ground or if you have a short to ground the voltage will go to 0 volts, That's how you can tell if you have a shorted wire or bad connection. Awesome feature from ATS scopes.. Thanks for posting a new video 👍

@CareyH64 Год назад

Expensive flasher.😵‍💫

@ThunderbirdRocket Год назад

That was awesome ! You have explained everything about this diagnostic process very very well !! And shout-out to the videographer for bringing us excellent footage !!!

@agoodneighborautorepair2176 11 месяцев назад

Very nice explanation and information(I think you can test the switch circuit with va low amps LED lamp 12v

@mikedavidson2117 Год назад

Hi may be a led test light would be safe

@philh9238 Год назад

What caused it to fail? Over current from the turn signals?

@danielrobertharrison7827 7 месяцев назад

You could make up your own 1 2 3 4 and 5 volt test lights

@martinboucaud679 Год назад

Great diagnostic my friend. That was awesome. I love it. Thank you for sharing this awesome job.

@AlHasenfratz Год назад

If I'm thinking correctly, a grounded test light applied to the left input likely wouldn't light due to the small current reference voltage output by the BCM. It seems that it would toggle on that circuit though, which could be used as a diagnostic method for the right side. But, as clearly mentioned, an accurate diagram and understanding of circuit operation is critical. Personally, test lights and power probes and other pointy circuit damaging type tools make me cringe. Keep up the good work, videos are excellent. Al

@spirokattan3655 Год назад

Nice diag! Thank you for taking the time to explain diag path. Excellent! Please keep them coming.

@GUE5TPA55 Год назад

Very in depth, this is exactly what I was looking for.

@personalimpressions4749 Год назад

Great video on the importance of verifying the problem. Some would’ve replaced the blinker module by looking at scan data.

@johnmitchell2741 11 месяцев назад

I have an XTool d7 I can light up each individual light on my 2018 Chevy Cruze using the special functions tool on the scanner So that would eliminate the BCM and all the wiring,and connectors from the BCM to the lights. that's a big diagnostic time saver

@robhunter2435 22 дня назад

This video proves why I like older cars...they are sooo much easier to work on. The programming on newer cars is ridiculous and no DIY person can deal with.

@robertmobileman8304 Год назад

great video and explanation of diag process, thanks

@fromisheon4867 14 дней назад

When we program the BCM, can a cheap or snap-on scan tool do it, or do we have to use the manufacturer's scan tool?

@tomerikstokness276 5 месяцев назад

You could also just jump the pins in the plug to the switch ,to check the switch. and Ohm between the switch-plug and BCM..

@tnamen1307 9 месяцев назад

If it's was my vehicle, i would have simply buy electronic relay parts, and rewired with the BCM to actually work for both left and turn signals. Only 10 dollars will FIXED the issue.

@thomasmihm7550 2 месяца назад

I know this is a GM but is there a way to program Dodge trailer wiring that factory harness without going to a dodge dealer on a 2014 Journey?

@tnamen1307 9 месяцев назад

Very simple issue. There's no 12V send out from the BCM for the right turn signal switch. That's why the scanner shows -2V.

@johnmitchell2741 11 месяцев назад

Wouldnt a DVM give you the same readings to help diagnose the wiring and connectors if you can't afford to buy a scope.Sorry looks like you answered my question The scope just makes it easier

@johnmitchell2741 11 месяцев назад

Somebody in the comments mentioned you should always pull any TSB before starting down the diagnoses rabbit hole.🧐

@davidbarnes9184 2 месяца назад

I appreciate your video but man brother..I'm not that far advance..just need to fix it

@ront7795 Год назад

I do have a question, hopefully I don't offend by asking. Why did you not use the Launch scan tool that you did a piece on about a month ago? I saw you using your Snap on tool. I'm just a DYI guy that likes to fix things when possible myself & am asking for a little reassurance before dropping 400 plus. Thanks for your videos & your time. 👍

@theroyaltyautoservice Год назад

One of our shops still use it daily but mainly for pre scanning vehicles when they come in. The one at our other shop locked up and won't turn on. Ive got to get with Launch and see 8f they can fix it.

@ront7795 Год назад

@theroyaltyautoservice Thank you so much for getting back with me! Means alot, greatly appreciated. 👍✌️

@johnmitchell2741 11 месяцев назад

My friend bought an XTool d7 and I can make it turn each individual light on in my car,so that would eliminate an awful lot of diagnosing time . I liked it but wanted a Bluetooth dongle-type scanner so I bought an XTool A30M I got it on sale for $170 but it will not program keys and you have to use your own Tablet it will also record and give you a health report on all your modules. Just Saying, do your research

@ront7795 11 месяцев назад

@@johnmitchell2741 Good info John. I actually ended up getting the Xtool! Felt it was a little more user friendly & better options for the DIY. Does a ton of stuff.

@johnmitchell2741 11 месяцев назад

Cool glad I could help@@ront7795

@overload3996 Год назад

OTC 3631 PCM safe test light could be used along with a meter.

@James-fs4rn Год назад

👍 great work as always! Thanks for sharing.

@ABCDEFGHcreator Месяц назад

difficult to fix, in old cars you replace the lights if they are burned, or the switch and that's it.

@johnmitchell2741 11 месяцев назад

Im just curious Did it have LED Lights or incandescent bulbs

@laxbeach2381 27 дней назад

14:08 technician states when I use right turn signal, I receive a text message.

@DependableAutoTruck Год назад

what i would like to understand how doing the turn signals this way is better than the old days when you didn't have a computer such a simple circuit made complicated with electronics.

@AlanBurnham Год назад

Well, it is way too difficult to hold the lane change position on the turn stalk; we need a computer to do 3 blinks. I'll take a manual transmission and mechanical turn signal flashers any day but a basic vehicle like that won't sell...blame long term financing for that. Most people wouldn't pay 40k+ for a car if they couldn't finance it for several years.

@DependableAutoTruck Год назад

@@AlanBurnham the ford guy that fixes all the late model fords just fixed a F-150 turn signals quit chain reaction soon vehicle would not run $5,600.00. the tail light lens was like $1,600.00 and it didn't have the lane assist module in it that was extra. no reason a lens should cost that much

@AlanBurnham Год назад

@@DependableAutoTruck I saw that video as well. Most people that buy those complicated vehicles new will probably never see the crazy repair bills; when the warranty runs out they buy a new vehicle with even more fanciness. I'll admit I wouldn't buy a new vehicle without power windows so I'm probably part of the problem I complain about.

@johnmitchell2741 11 месяцев назад

Ive read the manufacturers are doing it to cut down on the amount of wiring and connectors which also cuts down on weight and if your good with a scanner it can cut down on diagnostic time

@DependableAutoTruck 11 месяцев назад

have you looked at the new vehicles take the 5.3 look how much wiring there is compaired to earlier years mor and more wires@@johnmitchell2741

@AAB371 Год назад

Great video and explanation

@zekzygaming5128 Год назад

Glad to see that the volume is just fine now, thank you guys.

@TB-jy5nr Год назад

Hoi you all nice video Can you open the bodcontolmodul?

@johnmitchell2741 11 месяцев назад

I would have tried the 4 ways just for the hell of it to see what happened

@martinarrieta248 Год назад

Grasias

@michaelt8330 Год назад

How did you determine that it was UHF?

@theroyaltyautoservice Год назад

It's been a couple of weeks but I believe that information was in the RPO codes.

@johnmitchell8925 11 месяцев назад

Could probably do with out the Click bate

@michaelt8330 Год назад

Another great video!

@jameslewis1175 Год назад

Man you make it so easy to understand this. Thank you

@marshall1157 7 месяцев назад

i miss the simple flasher type turn signals

@pontiacsrule8761 7 месяцев назад

Great video as usual. I'm a DIY guy. i know that's the way things are today on cars. Imagine explaining to a customer the repair bill for a right turn signal. Long gone are replacing the $2 1156 taillight bulb. People don't realize what goes into all that trouble shooting & programming. Great video as always. I love these videos from Royal right to the point diagnosis. If you guys have a shop, can you estimate what that repair would cost in today's times? Thanks....

@TucoolRacing Год назад

Hello, may we know how can we send products to you for testing? Thanks.

@theroyaltyautoservice Год назад

You can reach us through Facebook Messenger. Royalty Auto Service St Marys GA.

@stansmulders6126 Год назад

Learned some thinks thanks

@tomd5010 Год назад

Yet another reason I’d never buy a GM vehicle. A simple turn signal not working ends up costing for a diagnosis, a new electronic module, installation and programming. Got to be hundreds of dollars. No reason it needs to be that complicated, although the video was informative. A turn signal should need power, ground, switch and bulb. There are a zillion of old vehicles driving around with the good old setup working just fine.

@mod_incllc3235 Год назад

Great video! Love that you focus the content mainly for working technicians. There are plenty of DIY focused channels but less professional oriented content on RU-vid. Thanks!

@IamReadyToRock 11 месяцев назад

nice video . From Peru

@Santiago_Ordonez_ 9 месяцев назад

Excellent case, in my opinion the only thing missing was the test of the turn signal actuators.

@ryan.mullen Год назад

Such a great video. Thank you for what you do. 🙏.

@aymenmohamed1134 Год назад

Awesome

@CarlosBeattie 10 месяцев назад

Great and informative another excellent video well done

@matpolson4411 Год назад

My only question is what made the bcm fail in the first place?

@theroyaltyautoservice Год назад

Unfortunately we don't know.

@johnmitchell2741 11 месяцев назад

Someone said in the comments there was a TSB on this issue saying water from the ac evaporator drain was dripping on the connector causing it to corrode @@theroyaltyautoservice