Civic Needs a BCM... Part 1 The Real Diagnostic Testing!

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  • Опубликовано: 18 ноя 2024

Комментарии • 115

  • @Doug....
    @Doug.... Месяц назад +16

    That was really impressive. So the customer would have ended up paying for a BCM and a fuse box and other stuff that they probably found along the trail to the fuse box. 😳

  • @PineHollowAutoDiagnostics
    @PineHollowAutoDiagnostics Месяц назад +15

    WOW holy carnage, Jake!
    Quick tip on avoiding cutting wires...just use a test light to ground while watching the amp clamp on the wire to determine the source of the voltage via current flow direction 😉

    • @troybartholomew1065
      @troybartholomew1065 Месяц назад +5

      sounds like a practical solution. Could you show us a demonstration on your channel 👍

    • @autodiagyt
      @autodiagyt  Месяц назад +1

      Someone else said that also. Idk why I didn’t think of that.

    • @kevinwalker4623
      @kevinwalker4623 Месяц назад +1

      Can we get a more detailed explanation of what you are saying here, obviously Jake gets it, for the less educated (me) maybe a picture or an actual demonstration like another commenter mentioned. I gather the amp clamp would not be on battery negative but on the wire you are trying not to cut. The test lamp is connected to ground and pierced through the wire we are trying not to cut. So how does this tell us which direction the power is coming from?

    • @PineHollowAutoDiagnostics
      @PineHollowAutoDiagnostics Месяц назад +3

      @@autodiagyt definitely needs a new BCM! 🤣👌
      I crapped my pants when you showed the 20A parasitic draw... All time record! First thought was something is getting REALLY HOT 🔥🔥🔥

    • @jimpetty2961
      @jimpetty2961 Месяц назад

      ivan the some time refer this your logic is key.

  • @marshall1157
    @marshall1157 Месяц назад +11

    The correct sarcasm is unreal!

  • @joe.dasilva
    @joe.dasilva Месяц назад +14

    Best diagnostics channel on youtube!

    • @calholli
      @calholli Месяц назад +2

      There are a few others.. but he's one of them.

    • @greggc8088
      @greggc8088 Месяц назад

      Best!

    • @HouseCallAutoRepair
      @HouseCallAutoRepair Месяц назад

      You're almost correct.... One of the best!
      There are a few he learns from too....

  • @karlkoenigstein4138
    @karlkoenigstein4138 Месяц назад +4

    I don’t know about the rest of y’all but I am eagerly looking forward to Part 2 where this poor Civic gets the BCM it so richly deserves!

  • @JoseSilveira-newhandleforYT
    @JoseSilveira-newhandleforYT Месяц назад +6

    Honda diagnostic flowchart: Read DTC, replace corresponding module. If no results, continue replacing modules until all modules are replaced. If still no results, sell new car :-)
    Loved the well deserved sarcasm!
    Superb diagnostic and thought process, Jake! Appart from the fuse box (and the BCM, of course), there may be a problem with whatever that carbonized relay used to power when good. Nevertheless, a loose connection can scorch any material with high current flowing, even if no other parts were bad. Seems Part 2 may bring some more interesting bits of information :-)

  • @jesusalvat
    @jesusalvat Месяц назад

    great diagnostic case. It is an example of how diagnostic letters are limited. the difference between a technician and a parts changer. congratulations.

  • @H750S
    @H750S Месяц назад +5

    Great diag and thought process. Wonder if a low amp clamp over those wires at the interior fuse box could’ve determine direction of current flow without cutting.

    • @autodiagyt
      @autodiagyt  Месяц назад +6

      That would have been a great idea. I could have loaded it with a test like and seen which line increased 2 amps when the bulb is on and then dropped when off. I’ll try to keep that in mind for next time!

    • @calholli
      @calholli Месяц назад +2

      @@autodiagyt Yeah.. I personally wouldn't cut wires until it's a last resort. I'm not against it: I would just do other things first if I had more options.

    • @autodiagyt
      @autodiagyt  Месяц назад +4

      @@calholli trust me I hate doing it lol. I spent plenty of time trying to depin it. I just couldn’t get it lol.

  • @troybartholomew1065
    @troybartholomew1065 Месяц назад +1

    The sarcasm is priceless haha. Great diagnosing and always nice to watch the practical way you solve the problem

  • @mikechiodetti4482
    @mikechiodetti4482 Месяц назад +1

    That's something new. Never saw that before! WOW!
    On to the new (or used) fuse/relay box and part 2.
    Good one Jake!

  • @geraldwardrop
    @geraldwardrop Месяц назад +4

    Love it Jake, keep'em coming, and thank you..

  • @RJJ6129
    @RJJ6129 Месяц назад +3

    Waiting patiently for next video but I’m going to say it’s the AC clutch relay.🤷‍♂️ WAG… Because many times I’ve had Honda’s come in with dead batteries and a draw and it was the relay, but I’ve never seen one melted down like that.

  • @jtjones4727
    @jtjones4727 Месяц назад +12

    Some of these flow charts are so stupid, it's baffling.
    Step 1: Turn key to start position, does engine start? Yes goto 2, No goto 3.
    Step 2: Go to step 3
    Step 3: Replace Engine Assy

    • @calholli
      @calholli Месяц назад +2

      Anything that condemns a module without ever testing any voltages or loading the circuit: should be discarded.

    • @fredautos
      @fredautos Месяц назад

      😂

  • @arthurfricchione8119
    @arthurfricchione8119 Месяц назад +1

    😂well this was different . That is one fried really . I wonder if it shorted out anything else those relays in that wares looked pretty toasted . Looking forward to part 2 . Thanks for sharing .Haven’t seen one that cooked that bad . 👍 Artie

  • @Wayne-p7n
    @Wayne-p7n Месяц назад +2

    Awesome, I guess you'll add hondas on your nissan list, great intro you should do standup

  • @damon-t4l
    @damon-t4l Месяц назад

    I’m glad I found this channel, keep up the good work🙏

  • @calholli
    @calholli Месяц назад +4

    A thermal camera would work well for a job like this.. Whatever is pulling over 20amps, it's going to be heating up a LOT. That would be my first move

    • @hhn2002
      @hhn2002 Месяц назад

      Actually 1 amp would show up on a thermal if it's not buried in the dash! I know I have one it's amazing

    • @calholli
      @calholli Месяц назад +1

      @@hhn2002 Exactly.. That's my point. 1 or 2 amps is easy to find: 20amps would be impossible to miss.

    • @russellhltn1396
      @russellhltn1396 Месяц назад

      I agree, however in this case, it's likely the 20 amps were because a number of modules were powered on. When I saw 20 amp, my first reaction was to throw the amp clamp on the battery to alternator wire to make sure it wasn't blown diodes. (In this case, it would have been a dead end, but it was a quick and easy test that ruled out a possibility.)

  • @samsonacc8081
    @samsonacc8081 Месяц назад

    Well Woody, that was a great upload, thanks for sharing.

  • @jansonauto
    @jansonauto Месяц назад

    Your humor is awesome, thanks for sharing! What a melt down

  • @garyalford9394
    @garyalford9394 Месяц назад +1

    Amazing it didn't catch fire !

    • @garyalford9394
      @garyalford9394 Месяц назад

      Why didn't fuse shut down the power??

  • @greggc8088
    @greggc8088 Месяц назад

    I like Honda's service info because it's so humorous-Try a VSA and then try a PCM. But recently other manufacturers are following their example. Ford for one.
    Edit-Rear window defogger relay (M1) per ALLDATA's box view.

  • @ikocheratcr
    @ikocheratcr Месяц назад

    I think that "diagnosis" flow chart, was setup by one of the BCM programer, and the poor guy never thought other things could fail.
    Regarding the cable cut, assuming the fuse box was not burnt down, you can measure how current is flowing with your volt meter. A cable has a resistance, and if looking at the diagram you see current should flow in certain direction, there will be a voltage drop on the cable. When you turn off the car, check that same voltage, and if changes polarity, that means current is flowing in the opposite direction. This helps find this feedback issue between the two cable you cut, but without cutting them. Voltmeter needs to be in mV scale, but your does.

  • @martinzordan7173
    @martinzordan7173 Месяц назад

    I suspect of the 3 relays the moment i saw them. Personally i would prefer go to the fusebox y remove the 3 relays to confirm that the circuit going through pin C8 wasn't the problem and don't cut or depin the connector. Great diagnostic btw!

  • @Discretesignals
    @Discretesignals Месяц назад

    I cant believe the BCM melted like that. Cant wait to see why that defogger relay was stuck on.

  • @Dave-dm3xs
    @Dave-dm3xs Месяц назад

    Jake at 40:40 "Holy shit, I don't know what to do" when pulling the relay out is the best comment you've made in all your videos. I think I would have disconnected the battery and pushed the bloody thing outside before it burnt my workshop down 😁

  • @tullgutten
    @tullgutten Месяц назад

    20 amps drow is like a 200watt space heater, should be very easy to find where the power goes with a thermal camera.
    Having a InfiRay thermal camera in my phone i always use that as a first thing on cars drawing power 😅
    Can see what fuse, relay, cable and module the power goes to if it is more than a half amp usually

  • @chekelley6861
    @chekelley6861 Месяц назад

    Wow! Did not expect that

  • @rodvan-zeller6360
    @rodvan-zeller6360 Месяц назад

    At 39:20, yes, the thermal camera would find it, however, it is a very good thing you followed the circuit path because there is a big learning value that transfers to other electrical diagnostic problems, including learning how to use diagrams.
    Great video.

  • @davidp7163
    @davidp7163 Месяц назад

    Good thing the "fuse" in the fise box did what it was supposed to do....oh wait, the relay did the fuses job. 😅

  • @robertsmith2956
    @robertsmith2956 Месяц назад

    I wouldn't put it past them to have the code short the BCM internally when it is set. Much like Voyager did when the antenna didn't receive a signal that wasn't sent. Fry the antenna lead and use back up.

  • @atichargr
    @atichargr Месяц назад

    lol funniest video yet! Love it. Honda’s diagnostics always use to end with install good known “part” and retest. I would probably say it is the a/c relay if I had to take a “swag” (scientific wild ass guess) seen a lot fail causing draws and or just not functional.

  • @victorgonza4528
    @victorgonza4528 Месяц назад

    outstanding nicely done .

  • @georgedawsonjr450
    @georgedawsonjr450 Месяц назад

    Lucky the car didn't catch fire with that so hot. Melting the box and all

  • @kyletuttle9064
    @kyletuttle9064 Месяц назад

    Don't edit anything Jake your only telling the truth thanks great video

    • @autodiagyt
      @autodiagyt  Месяц назад

      I might have clipped out a few choice words lol

  • @adelalshammary109
    @adelalshammary109 Месяц назад

    Man thank you very much

  • @NoName-yr1jv
    @NoName-yr1jv Месяц назад

    Well done 👍

  • @Friend_of_the_One-Eyed_Ladies
    @Friend_of_the_One-Eyed_Ladies Месяц назад +1

    When I saw 20A+ drain, my first thought was "thermal camera." That's gonna be a ton of heat somewhere. Also, no way would I start poking around in that crispy fuse box without disconnecting the battery first (and the maintainer, obvs).

    • @Friend_of_the_One-Eyed_Ladies
      @Friend_of_the_One-Eyed_Ladies Месяц назад

      Just to clarify, I'm not worried about damage to the person when poking around in fried hardware. I'd be worried about destroying more stuff, shorting more things together, burning up wiring harnesses or other components which weren't damaged originally, etc.

  • @brucherrin8947
    @brucherrin8947 Месяц назад +2

    BCM stands for fusebox ... Apparently🤣

  • @martinarrieta248
    @martinarrieta248 Месяц назад

    Grasias

  • @OneLegged-honda-mechanic
    @OneLegged-honda-mechanic Месяц назад

    Love the sarcasm 😂

  • @cullenmiller8170
    @cullenmiller8170 Месяц назад

    You had me going with your intro and I was wondering if you had hit your head. I was about to recommend the place in Mexico that just fixed my multiple TBIs and PTSD. 😂😂

  • @jordysandino6577
    @jordysandino6577 Месяц назад +1

    Mr Jake .
    Can you please explain to me why the first test (194) didn’t lead with 14 something volts?
    14 volts is plenty to light it right?

    • @autodiagyt
      @autodiagyt  Месяц назад +3

      The resistor inside the fuse box limits the current. Without a load you see the 14v, add a load and it creates a voltage drop across the resistor.

  • @ATSNorthernMI
    @ATSNorthernMI Месяц назад +1

    This is to streamline the process so a fresh out of school tech can get the job done and the customer on their way hoping that at least 80% of the time it is the BCM. Every single manufacturer has these kinds of flow charts and it boggles my mind they want techs to follow these to a tee. This is a bunch of engineers that come up with this crap because they think they are better than everyone else. They will put together the most simple and condescending chart they can to not only make fun of new techs fresh out of college, but to insult their intelligence. Then to make matters worse, the service manager(which normally don't know sh*t) makes everyone follow the engineering flow chart that was created by biased and unhelpful people. A friend of mine took his charger to the dealer because he had gasoline puddles under his car. The service manager called him up and had him stop into the dealership just to tell him he had 2 fuel pumps in his tank. The guy seemed completely clueless and was telling my friend this like it was the first time he ever seen something like this. My buddy was like "yeah, the driveshaft goes through the middle and the gas tank has a hump in it. The service manager said that it was not the case and that both fuel pumps were part of one unit when they were two separate units on either side of the hump.

    • @autodiagyt
      @autodiagyt  Месяц назад

      Honda is notorious for these kinds of flow charts. Usually step 2 or 3 is “substitute known good part”.

  • @ivansperanza
    @ivansperanza Месяц назад

    Holy shit, I wasn't expecting that, total melt down....I wonder what caused it.

  • @crasher88
    @crasher88 Месяц назад

    well I already cut one wire let's go ahead and cut another one! that's the spirit!

  • @Wayne-p7n
    @Wayne-p7n Месяц назад

    Do I sense a bit of sarcasm ? Great intro. I had to watch the beginning a few times, it cracked me up. You really have to try stand up you'll probably give up being a tech 😂

  • @danielkearns3600
    @danielkearns3600 Месяц назад

    Diagnosing issues for other shops and customers no fixes for draws for decades. I supercharger my diag. work first leaving everything in a serviceable mode with doors tripped and battery maintainer overnight in conditioned shop temperature. I infrared test first and find the hot spots and then go to codes and using identifix also for known failures and then go into electrical Diagnosis seems to save hours and why I call it supercharged parasitic draw testing. I don't jump to using one test or information source I use them collectively to use logical thinking process to get deeper into electrical system and use diagnostic tree sometimes last.

  • @ColeTanner88
    @ColeTanner88 21 день назад

    How do you like the "snickers bar" meter? I took one of Sean's classes at ASTA last month and he was talking about them. Haven't ordered one yet but plan to.

    • @autodiagyt
      @autodiagyt  21 день назад

      Oh man it’s the best amp clamp for quick checks.

    • @ColeTanner88
      @ColeTanner88 21 день назад

      @autodiagyt appreciate the reply! I'll go ahead and order 1 or 2, they're pretty inexpensive if I remember correctly.
      That's a great representation of why I don't follow trouble trees lol I'll use them, code set criteria and wiring diagrams to determine circuit design but do my own checks dependent on codes, symptoms, etc.
      Thanks for sharing, keep up the great work!

  • @bobbybrown8926
    @bobbybrown8926 Месяц назад

    also codes for seat heater circuit, drawing 20 amps

  • @ferrumignis
    @ferrumignis Месяц назад

    With a 20A draw I'd have gone straight to the thermal camera, something had to be getting pretty hot.

    • @autodiagyt
      @autodiagyt  Месяц назад

      But that wouldn’t make a good video would it lol. The purpose was to show how to troubleshoot a code with a completely wrong diagnostic flow chart. The complaint could have easily just been the Keyless Start message and no battery issue.

    • @ferrumignis
      @ferrumignis Месяц назад

      @@autodiagyt No fair enough, I totally understand you wanted to show the whole process.

  • @davidgilpin5200
    @davidgilpin5200 Месяц назад

    It's sad when the Manufacturer is helping LOAD UP THE PARTS CANNON with their flowchart instead of providing the Tech with diagnostic guidance. But, hey, there's good money to be made from all those unnecessary BCM replacements!

  • @gregorywilson-parker1619
    @gregorywilson-parker1619 Месяц назад

    What state is your shop located in? Im a new subscriber

  • @josuedavidnataren4255
    @josuedavidnataren4255 Месяц назад

    That's a lot of wires cut and a lots of turns for not checking the basics of the basics (visual inspection first)

    • @autodiagyt
      @autodiagyt  Месяц назад

      Finding the issue fast isn't ever the purpose of the channel. It's about developing Diagnostic skills. This could of easily been a 1 amp battery drain and still that same code saying replace the BCM.

  • @arlo4051
    @arlo4051 Месяц назад

    If it had a better battery in it you would have been able to find the problem from the blistered paint on the hood.

  • @michaelpowers4731
    @michaelpowers4731 Месяц назад

    Why not go after that huge battery draw first? Just wondering what made you go down the bcm code road

    • @autodiagyt
      @autodiagyt  Месяц назад +5

      Mainly because there was 2 concerns with the vehicle. The keyless start and the battery drain. I figured they was related and just wanted to show a different approach. And it made a much better video then just going after the massive battery drain.

    • @michaelpowers4731
      @michaelpowers4731 Месяц назад +1

      @@autodiagyt that’s what I figured! Great channel 👍

  • @jordysandino6577
    @jordysandino6577 Месяц назад

    Another big problem that I saw is the car was off so the generator was not working and still 14.13 that is crazy .
    I don’t think is normal.
    Do you? If so why ?

    • @autodiagyt
      @autodiagyt  Месяц назад +1

      The 14v is from the battery maintainer.

  • @Jpilgrim30
    @Jpilgrim30 Месяц назад

    You can tell these people building these things and writing service information have never worked in the field. They don’t even think about the possibility of a burnt up relay or fuse box back feeding a circuit.

  • @tracycolorado
    @tracycolorado Месяц назад

    Just one problem , why did this happen 😕

  • @bobbybrown8926
    @bobbybrown8926 Месяц назад

    im gonna guess green crusties at 18.41 with bulb check. lets see

  • @philh9238
    @philh9238 Месяц назад +1

    Honda flow charts are garbage. They hardly tell what sets the code or theory of operation

  • @mickdowland9831
    @mickdowland9831 Месяц назад

    No way you didn't know the fuse box was melted before you cut them wires 😂

    • @autodiagyt
      @autodiagyt  Месяц назад +3

      Honestly I didn’t lol. My logic is the BCM had that code and a faulty BCM could have turned things on to cause the draw. Just mainly wanted to pick a route and follow it. It’s probably the longest way around finding the battery drain but I showed how you can just start with something that is a known problem(the code) and follow it to the source of the problem. Hypothetically let’s say the relay wasn’t the issue and something else was, this approach would still find it.

  • @paulspeller968
    @paulspeller968 Месяц назад

    wow i thought i had it bad earlier in the week with a 400 ma draw 🤣🤣🤣🤣 but 24 amp yep they were in trouble . mind you again i was screwed on the drawing . lucky for me i watch this channel “never trust your drawing “ it did not show me the full circuit to many wires in one of the plugs i tracked it down to federal car spider and oh what’s this a what i call billy bob button (emergency roof realise button) apparently a requirement in your neck of the woods ie the states . mind you the gap between the roof compartment and the roof cover that would have to be one skinny kid to get trapped in there 🤪🤪 but the button was the culprit unplugged draw went away . i guess what i am saying is thank you 🙏 lucky i had seen you do many a draw and i don’t see them all that often in the plant . oh and they did swap the bcm before they called me 🤣🤣🤣🤣🤣

  • @kellygibson7299
    @kellygibson7299 Месяц назад

    Does vehicle have a nice bulge?
    YES
    Replace BCM

  • @joeandgod1
    @joeandgod1 Месяц назад

    If I was you, I would put a BCM in it and if that didn't work, assume it's defective and put another one

    • @autodiagyt
      @autodiagyt  Месяц назад +1

      Exactly! There is no other possible cause for the code.

  • @phillipzan2005
    @phillipzan2005 Месяц назад +1

    Omg someone that actually used truspeed motor. Can you tell me if its worth the 600-700 a year subscription on the autel? I didn't want to commit till I was actually was able to get a review or a few opnions about it. Right now I share Alldata with another shop and its been my favorite SI for the last 10 years, compared to Prodemand.

    • @autodiagyt
      @autodiagyt  Месяц назад

      Honestly is it worth the $600 it depends. I love how it’s linked in the tool because it’s fast for looking codes like I showed here. The search function seems ok. I like that it has the oe diagrams but no aftermarket redrawn. The thing I hate about it is the organization. Nothing is broken down into systems. They almost force you to use the search bar. Secondly they may not have something labeled like the OE SI would be so that can be frustrating. I really need to do a review video on it cause there is definitely a lot of holes in it. With that said it’s 1/4 the cost of alldata yearly. So if this is you go to scantool the integration part is a pretty good value but it’s in no way a replacement for alldata or prodemand. But it does make looking up codes really easy and fast when it’s in the library.

  • @dougkelley1266
    @dougkelley1266 Месяц назад

    I agree with honda. Put a bcm in it. Lol

  • @rodvan-zeller6360
    @rodvan-zeller6360 Месяц назад

    Is the diagnostic procedure a marketing technic to sell parts? Or are the engineers writing the diagnostic procedures that stupid?
    Is there a third explanation?

  • @anselmohernandez6859
    @anselmohernandez6859 Месяц назад

    🙄

  • @HouseCallAutoRepair
    @HouseCallAutoRepair Месяц назад

    Retract the claws! Holy SMOKES!
    Newer fuse boxes are such a disaster....

  • @GraditelMacedonia
    @GraditelMacedonia Месяц назад +2

    36:56 All time asking my self is it easier to watch with thermal camera and then looking reverse? Because that amount of amps will show gloving something.

    • @autodiagyt
      @autodiagyt  Месяц назад +2

      When there is a huge draw like this the thermal camera will probably be a good first grab but take the Ford F150 from a couple weeks ago it would of been useless on it and pretty much most of the battery drain issues I get.

    • @GraditelMacedonia
      @GraditelMacedonia Месяц назад

      @@autodiagyt I forgot to mention... probably you not want to disturb some wires or bad contacts...because maybe that causing short to activate back feeding on something, but here is obviously why.