Snap-on Live Training Episode 08 - Data Bus Testing and Diagnosis Part 2

hello everyone welcome thanks for joining our online training class today um my name is jason greens and i'll take you through the next 30 45 minutes or so of material now if you're watching us on zoom if you have any questions throughout this just look at the top or the bottom of your screen wherever your zoom controls are you should see a little button that says q a click on that it'll open a new window you can type in your question hit submit and i'll get to the questions at the end of the presentation if you're watching us live on youtube you can use the live chat function you can type in your question in there and then i will make sure to get to those at the end as well if you're not watching this live on youtube say after the fact the live chat won't be there so you could leave us a comment um for that with that my name is jason cabrinus i'm one of snap-on's national diagnostic technical trainers been in the training department the last seven years traveling around north america helping techs and shop owners get the most out of their diagnostic equipment before that it was a couple years as a diagnostic sales rep a snap-on uh so i had uh 30 different snap-on franchisees that i worked with as well as the customers that they serviced in order to help everyone get the most out of their diagnostic needs before that it was eight years at subaru so i was a dealership technician at a subaru dealership and over time it just became the default diagnostic guy i guess you could say right so i always end up with the drivability problems the intermittent problems the weird wiring problems that would seem to crop up on those vehicles and that's really where i cut my diagnostic teeth was trying to figure out all these strange head scratcher type problems that would come into my bay before that bunch of other miscellaneous wrenching jobs been about 25 years under the hood for me so our topic today is what we're calling data bus testing and diagnosis and this is part two of two so if you were with us last week we went through part one and that was our basic networking strategy so to speak and how we would diagnose basic networks such as our low speed network so j1850 variable pulse width and pulse with modulated versions we talked about that we also talked about k-line bus we also talked about lin bus so lin bus is a single wire network used for master and slave control of say motor switches and the like and then we did a little bit on cam so for this week we are going to start with can we'll do a little recap of kind of what we talked about last week because i understand not everyone was here last week right so we're going to do a little bit of recap there talk about can and then move on faster and faster in our network so to speak so we'll go and talk about flexray most and then ethernet and all you may have heard of that is doip or diagnostics over ip it's just another way to call that so a refresher on networks what mo just about all networks are going to work on what we call a voltage differential the difference between the high and the low of the voltage signal and all networks work on a voltage range of some sort you just need to know what that is from your manufacturer so here's an example on the screen this is from a lin boss and we see we have a high side and a low side uh in this case it's a constant high side and then it drives low in order to send information and this is the these are the different bits of data here the on and off so ones and zeros if we see on this vehicle uh what we want to see on linbus is a 12 volt differential between the high side and the low side give or take you know a few tenths of a volt on either side so in this case this is going to be battery voltage on this vehicle so it's 13.35 volts or whatever line voltage is and then it goes down low on the low side we see it's pretty close to a volt so it's actually nine tenths of a volt 0.91 volts and then the difference between the two between the high side and the low side the delta they call that is 12.44 volts so we see that is really you know it's less than a half a volt uh difference between the high side and the low side there so that's what we're working with is our voltage differentiables and we want to be aware of what the voltage differential needs to be on the particular network we're working on how will we access the networks to test them the majority of the time you want to you don't want to be breaking wiring harnesses apart and things like that so we want to be plugging into maybe the diagnostic connectors usually the easiest place to get to those data lines at least to communicating to the vehicle data lines type that we want to get to and for the purposes of this course what we really want or this part of the course we would want to concentrate on pins 4 and 5 which are ground pin 16 which is always power and then pin 6 and 14 which would be our main can bus for the vehicle you also want to look through the wiring diagram because not every bus terminates uh in the same place right so the main can bus on a vehicle if it is can communication will be on pin 6 and 14 at the dlc and you can see the pattern some vehicles have multiple can buses on them so they'll use up multiple uh connectors or multiple pins on the connector on the dlc there so i know on like a gm vehicle i looked at once we had 6 14 13 12 11 and 3 all had networks on them and they're all can networks they were just you know you know engine can chassis can object detection can on that particular vehicle uh so you just you probably get pretty good at reading a wiring diagram when you're testing network network buses as well and then how are we going to access the connector that diagnostic connector because we don't want to test just by simply stuffing our probes in there that might cause a communication issue in the future as well because we could damage the connector right probably also very difficult to get to the back of that connector because they don't usually put it in a good easy place to get to right usually it's under the dash somewhere and have to take a few panels off perhaps to even get to the back so the easiest way to access is use some sort of a dlc breakout box this one happens to be the blue point branded one and they're all pretty much you know for all intents and purposes the same layout uh you know we'll have a about a two foot cord or so that goes and plugs into the dlc and then on the other side of the box we have another dlc connector where we would connect our scan tool so that way we can be communicating with the vehicle at the same time and we can be also reading the signals the voltage is going up and down those wires by tapping in using the banana jacks on the breakout box there's 16 pins there for the 16 pin connector so we can use my scan tool to communicate while i use my scope to read the lines and yes you do need to use a scope in order to check really any networks because voltmeter just it's not built for that right so recap on cam now high speed can consists of two twisted wires with a transmission rate of 100 to 500 kilobits per second so that's for standard cannon we also have a slightly faster version of can that's out there it goes up to one megabit per second that's actually twice as fast as this speed here uh when you get down to about 100 kilobit per second range you might be calling about maybe you've heard of mid midspeed can medium speed can uh that sort of sort of bus be in that 100 kilobit range now canyon uses a two to about a two and a half volt differential there's an acceptable range of where that data can reside in the in the in the voltage one signal circuit is identified as can high and the other side is identified as can low so we'll see can high on what we call pin six on the dlc and can lows on pin 14. at each end of the data bus as well there's a 120 ohm termination resistor between the can high and the can low circuits and that essentially works as a stop sign so your network traffic's going around and flowing around throughout the network and then when it hits that 120 ohm resistor that knows that it's the end of the line we don't have any further to go there and uh you know it would look something similar to this this is a simplified drawing of a of a can bus right so i have pin six that's that can high pin 14 is that can low and then my 120 ohm resistor on either end more often than not that resistor will be inside a control module so inside the ecm tcm bcm what have you uh there can also be blank connectors on on this as well i know like when we worked at subaru we had an optional alarm module that would plug in if they wanted to upgrade their alarm and it had a can bus connector underneath the seat you take the 120 ohm resistor that they just had plugged in on the end and then you'd plug in the module that would power up and it would go and do communication how it would need to go so really for testing a can bus as i said we need to use a scope right because you're not gonna be able to see the data going back and forth if you use a meter about the only thing you can test on can with a meter is just maybe the uh resistance right there and check the resistors right so you put in one one end and pin six one end and pin 14 and then since it's reading both wires both wires have 120 ohm resistor at the end for all intents and purposes we have two wires so we divide it in half so it's an average when we're reading that so we'd see around about 60 ohms when you're checking between both lines on a can bus now can bus is expandable right it's modular we can add additional controllers there and they'll start communicating we want to add some more controllers sure we can do that too add a few more controllers there and they'll continue communicating with each other we can also take modules away right take it down to only one module on a can bus so can busted a dlc so think about it that way we could still communicate with one module on a can bus it was just from the dlc to the to the module then if we were to inspect the data bus when we're looking at can this is an example of a good pattern when it comes to can so what we see is there's two different signaling uh levels so we have two and a half volts where it's sitting here we call that idle state so it's not transmitting data when it transmits data it goes up from that two and a half volts about a volt volt and a quarter looks like it's about three and a half volts there so that's one volt and then it comes down about a volt volt and a quarter on the other side so we see that two to two and a half volt uh range in between and that is our data packet and we're also looking at this at a hundred micro second scale so that's one hundred millionths of a second from this zero to this 100 that's 100 millionths of a second of time passing and we don't see the whole data packet here either if we came out to maybe a 200 microsecond we should be able to see the whole thing 400 we'd be able to see it very well and once again that's on pin 6 and 14. now i recapped can because it is also pertains to what we're going to talk about you know on our other two not two wire networks for the most part uh the structures are very similar uh the patterns are similar uh when we go along so i just wanted to have that as kind of our baseline here right so then we get on to flex ray now why do we have flex rate let's do a little history lesson on this too so uh can bus has been around since the 90s really but in vehicles standardized 2006 is when that came online uh so any vehicle had to have can bus communication on their main data bus network and as we said at the fastest it is one megabit per second right so one one megabyte if you want to think of it that way per second uh and then the flexory bus we needed something faster because as can expanded and we added more and more modules to this then we say okay now we're having congestion we're having data collisions we're having problems here with communication speed so we need something faster well first off they started dividing the networks so like i said on that gm there i had three different can buses that i could access um and then even that's not enough now we have way faster signals we need a faster network so that's when they came along with flex-ray standards so flex-ray for all intents and purposes it's laid out a lot like can right so it consists of two twisted wires and on this though the transmission rate is up to 10 megabits per second and a lot of that comes down to the underlying technology of the hardware and the chips etc and it uses a one volt differential so it has less distance to travel to to create their signal so they can actually create it faster one signal circuit is identified as signal high and the other one is signal low also on this depending on the manufacturer we can they can build in um uh redundancy right so i could have one line at one set of lines and another set of lines that are identical to each other just you know parallel uh so if one set of lines fails the other lines can take over so there can be redundancy built into it at each end of the data bus there's an 800 to 100 ohm termination resistor between the high and low circuit so that really depends on the manufacturer as well so it's not that straight 120 ohms as the can standard we have a range that it could be but just so you can see the similarities between flex rate and can flex raise like a very fast can it's a little different in the voltage ranges it's definitely a lot faster 10 times faster so here's just an example of flex rate bus signal off of bmw if you watched that video that it played at the very beginning if you're around for that uh walk through testing a flex rate bus on a bmw and you can see there is uh my signaling there and it is considerably faster all right so i'm going to compare this to the can we just looked at so if we look at a 0 there 100 microseconds there there are three packs of data on that screen so that's three sets of data whereas i could only look at maybe half a set of data on the can so if i wanted to put those side to side we see can we see maybe half and then we see three on there so if i was to expand this to say 200 microseconds we'd probably be able to get the whole you know string of data on can on a 200 microsecond screen uh whereas we can see three on a 100 microsecond screen on flex-ray so if we were to compare that to a 200 microsecond on a flex ray we'd see six packets of data right so it's it's considerably faster than cam so we can throughput way more data on that all right so those are your those are two of the main uh vehicle communication networks we're working with today um there's a couple more that are even faster and a little bit different so this one most is a little bit different than our can and our flex rate is still to a two wire bus it's not necessarily a twisted pair though it could just be a two two-wire non-twisted bus can also be copper on some vehicles and it can also be fiber optics on other vehicles right so depending on how the manufacturer wants to set it up but most is another network you may have heard out there so we figured we'd at least talk about it also most stands for media oriented systems transport uh the infotainment network is dedicated high-speed multimedia streaming data bus independent from cans so when you find the most bus on a vehicle it's going to be independent from the rest of the vehicle maybe you'll have a gateway module to translate between but this is used exclusively for multimedia data so video audio and the like so the most bus is configured in a physical hardwired loop with each device within the bus sending and receiving data on an assigned address in a set order the radio is the master and monitors the bus for vehicle configuration infotainment data messages and errors on the bus so the radio is in charge and then each module on that bus talks in order so here's an example wiring diagrams is off a cadillac and we have the radio here and we see how we have these arrows which indicate signal direction so from the radio it goes to the audio amplifier from the amplifier it goes to an instrument cluster from the instrument cluster it then goes to the media disc player from the disc player it goes to the human machine interface control module which is a really fancy way of calling a touch screen sorry where the human and the machine interface by touching the screen and then it goes up to the radio right so it's just a hard wired loop and i'm going to tell you more often than not i think you're probably not going to be breaking into this to do some wire testing uh to test the signals the signals are similar to how can and flexor are set up you know we have a voltage differential a high and a low but more what more than likely you'll be investigating this by using codes are you going to find your u codes and then you'll go through the diagnostic flow chart with that more often than not you're probably not going to be probing some of these wires if it's fiber optics you're not going to be probing the wires because what are you going to see you're going to see little flat pulses of light faster than your eye can process it and you'll have you know signal decoders and encoders on either end so you can't really see that what's going on so in this case it's going to be more of a code based workflow on that and then we get to the new kid on the block ethernet or using ethernet protocol on a vehicle we can also call that diagnostics over ip so it uses ip addresses so internet protocol uses the everyone has a set address just like on maybe a home network in your house or in your shop you also have this style of network on cars now by and large it's internally on the vehicles communicating externally out to the scan tools still usually handled by say a can bus and then it translates inside the the gateway uh so it and also uh there's a couple different versions of ethernet the most popular one that you'll see out there on automobile will be the 100 megabit per second version we have megabit ethernet we have gigabit ethernet which is more common at home but there are some manufacturers using that we'll talk about that in a second so the 100 megabit per second ethernet uses what we call a pam-3 voltage signal this is completely different than anything we've seen so far on our two-wire networks it is a twisted wire it can be multiple pairs of twisted wires on that connector pam stands for pulse amplitude modulation so it changes the height of the pulse of the amplitude of that pulse and there are three different voltage levels that's where the three part comes in on pam-3 there's also when you get into gigabit and faster networks they call that pam-5 and i think there's even maybe faster than that but pam-5 would be five different voltage signals so by and large on motor vehicles automotive applications we see that pam-3 voltage signal so what does that look like as i said it's considerably different than anything we've seen so far on our two-wire network what we see when we look at an ethernet signal there really isn't a lot of repeating patterns either it's going to depend on what's inside that little bit of data goes to about a one volt on the top to a negative one volt on the bottom so it's actually more of like an ac signal that goes on either side of zero zero's here in the middle what these red lines are going to represent are signal levels depending on how the designer designed the system they will set a demarcation line any signal above one of the demarcation lines will be considered a plus one anything below the lower demarcation line would be considered a negative one and then anything in between those is considered a zero uh so in this case i just put them at you know 500 millivolts above and 500 millibars below pretty much just cutting it in half or cutting in thirds so to speak so three signal levels a plus one is zero and minus one and that's how it splits it up and as you can see there really isn't a ton of repetition in this signal so there really isn't a well we'd say a known good right what's a known good can signal we can look that up and we can see because can looks like can flex ray that known good flex ray signal looks like a flex ray signal on anything with flux ray when we get to ethernet throw that out the window right we're not going to merely be saying here's a known good right because there's different parts of the data packets and there's a whole lot of reading material out there if you really want to get into the weeds on that i'm just trying to give you a good overview of how it works and once again with this you're not really going to be diving into necessarily testing it with a scope because you do need specialized equipment for it the way the signals are set up and the way that the hardware is set up you want to use specialized equipment for that so let's pick pictures actually have a specialized scope used in a lab for say you know communications networks server farms that sort of thing right so it is filtering through our internet technology is filtering down into motor vehicles and it is something you need to be aware of but as of right now once again kind of like with the most it is going to be more of a code based workflow i think out there uh so i did want to investigate though uh we hooked up to a 2018 volvo that has ethernet on it uh because we know we had to have internet com or ethernet communication protocol to talk with the scan tool uh so we wanted to see how it was laid out this is a wiring diagram from uh from volvo and we see there's a dlc here on pin 6 and 14 we have a can bus all right so it's just a regular twisted pair can bus goes to this module over here which i think is one of the gateway modules got flex rate can and lin coming in and out there and then over on this side we have another module that it goes directly to as well that's a can bus as well so on this vehicle externally we're talking can right so that's uh that's our usual diagnostics there but then we get internally to the vehicle the internal networks are ethernet that also brings us to an interesting thing that we found when we were in the shop looking at this volvo you're talking in an attack waiting to hook up to the car and he said oh yeah i have these three cars all hooked up to this one computer right now and i'm flashing them all over wi-fi because that's how they do it at the dealership right we're at the dealership uh so they're hooked up on their own network and they can connect to a car via bluetooth for diagnosis they can hook to a vehicle over wi-fi high-speed wi-fi in order to for diagnosis and flashing so they don't even need to bring a scan tool over to the vehicle anymore because they can scan right from their desktop computer on their bench and they can scan a car and they can flash a car and i guess as a order of protocols what they normally do when a vehicle comes in for anything they'll check it for updates because apparently there are enough software updates up there they have to update just about every single car that comes in they put out enough software updates out there for any of the modules and they flash it over wi-fi in the shop so i just thought that was kind of interesting and that's seems to be where the industry is headed right in the in the wireless vehicle communication there so when we hooked up on this ethernet vehicle as i said it is a can bus back and forth into that gateway module so that's what we see at the can bus we will see at pin 6 and 14 we see a standard can bus signal right so i have my two and a half volts in the middle i'm my volt volt and a half on the top looks like about three and a half volts up about three and about two one and a half volts down so that is my uh my two volt range there so just standard can bus until you get into the interior network of the vehicle so that brings me to how do i communicate with a vehicle that uses ethernet protocol internally because the computer speaks an ethernet and the other modules on the vehicle uh speak ethernet so there are vehicles out there that have this and it's actually been about four or five years they've started uh filtering in out there uh as far as communicating with the vehicle so the jaguar i-pace 2019 model year land rover 2018 and newer discovery range rover range rover sport range rover velar and then pretty much any volvo since 2016 and newer they've been slowly adding ethernet to all their line um so in order to speak to any of these vehicles that we have on the screen if you have a snap-on scan tool uh you will need some accessories so in order to speak to any of those vehicles and any future ethernet vehicles too uh if you have a triton d8 an apollo d8 a modis edge a modus ultra solus legend solas edge ethos edge or p1000 tool you need this specialized cable right here you see how it's got this big bump in the middle of the wire where we normally just see a straight wire that has some chips etc inside there that does the translation between our scan tool and ethernet protocol if you have a solus legend it came with it or it should come with it in the box uh supposed to have that ethernet that big fat cable in there if you have an apollo d9 our latest scan tool that just came out that is actually built in on the board so all the translation happens on the board of the tool and then it has a more standardized cable that goes out it still has twisted pairs inside of the cable so it is a different cable than the one we had before but it doesn't have that big pill box on there and it is a keyed cable so it only goes in one way if you have a zeus or a varus edge in order to communicate with the vehicle if you have a newer zeus with windows 10 it probably came with that s7 module which would be the black module the older zeus came with a red module that's how you know the difference we call that an s5 module and that doesn't have ethernet protocol in it but on the s7 this black one it does and then also the varus edge you can change your uh module your wireless module the big one the s4 module uh you can change that to the s7 as well just talk to your snap-on representative to find out more information on how you might get one of those if you need it if you don't need it don't worry about it i guess right and then also i just wanted to make you aware this is a over a year old now but back in may of last year uh gm announced that they are introducing they call the digital vehicle platform they're calling it the global b network platform so they announced it may 20th 2019 it was introduced in the 2020 model year cadillac ct5 sedan and the 2020 corvette that mid-engine corvette they just came out with so both of those vehicles for 2020 had it and then coming into 2021 there'll be some more models all the way up through 2023 they're expected to have it rolled out to all their models by 2023. in this vehicle they use ethernet but it's fast ethernet they use gigabit ethernet it's capable of processing four and a half terabytes of data an hour which is a five times increase over where they're at now which they call global a they've been using that for the last 10 years it also utilizes ethernet communication internally right so not externally to the scan tool but internally inside the vehicle up to 10 gigabits per second so as i said they're using gigabit ethernet in there very fast that's 10 times faster than our way faster than our regular ethernet we're using on other cars also we'll offer over-the-air updates and what i think they're going to be doing is uh either you can probably hook up to your home network and download the update overnight while you sleep you wake up you have to update your car right just like a windows update or uh maybe it'll even work with the built-in wi-fi or if it has maybe wireless connectivity with the vehicle or maybe 4g or 5g may work that way as well or they can push and update to a car tesla's been doing that for a while where they can just push updates to a car and you can choose to update it at that so it looks like gm's getting on board with that i'm sure the other manufacturers aren't far behind with that either so that's kind of a good overview to see here here's what's here here's the state of it and here's where it's going all right so let's talk a little bit about on tool functions of where we might might look here all right so let me pull up my wise news here so if you don't have any questions so far that's okay uh as i said if you're watching on zoom just put your question in the q a box so find a q a on your screen click on that submit your question looks like we've got a couple a couple of chats coming in here on youtube thank you very much sir for your comments and uh you know if you have any comments on youtube please feel free to add those as well so first place i want to go so i'm going to pull a vehicle i did my first class here so we had a bmw x4 and go in here and activate that vehicle so not to take as long to id and first the thing i want to do is let's look at some wiring diagrams so i'm going to load into shopkey and we'll take a look at the wiring diagram so as i said you it's very important to go through and and read the wiring diagram so you can see and understand how that vehicle is laid out all right so once i id the vehicle can go here and i'm on my home screen my main page and you see i have these quick links on any vehicle we have quick links for the vehicle on the page and then we have wiring diagrams right here which will list all wiring diagrams for the vehicle i want to see you know we could do a search and sort it down just to an individual module but i want to see overall network right so we can go down here there's a category called computer data lines so we go into computer data lines that'll give us the full however many pages of the networks on the vehicle so in this case there's four pages or four panels of uh data lines here so i'm going to open this up and pull up my diagram you can see there's a wealth of these are just network lines on this vehicle it's a 2015 bmw there's a plethora of wiring in here this is just networks right maybe some powers and grounds but there's no other wires in here it's just networks uh so this is the central gateway module and that's what translates all of all the wires so let me zoom in here a little bit and let's look at the top right here where the diagnostic connector is sorry that's our 16 pin diet connector pin 16 that's always power right four and five that's always ground and then we have most of the other pins on here there's only looks to be one two three four empty pins on this dlc so that gives 12 pins that are doing something on this uh on this tlc all right so it looks like this orange one goes back to the uh gateway module right and that is an ethernet data line right so maybe their factory scan tool uses that for diagnosis there i know on this car on a snap-on scan tool it just goes through can right but the can bus also goes back to the the gateway module the gateway sends the signal where it needs to go so you see we have multiple flexory busses on here uh ground more ethernet down here uh and then we see we have uh terminal 30 so that's power and terminal 15 is power uh diagnosis bus so that would be our it looks like that's our can bus to our pin in six and 14. pete can kick can uh pt can again k can again ethernet again so there's multiple ethernet networks there's multiple flex-ray networks on here uh there's probably lin bus in here as well right so many manufacturers use linbus as well so we can go all the way back through all these wires right so we have a a terminating resistor where multiples of these networks terminates that also gives us a testing point a little breakout point there alright we have high speed low speed mid speed networks in here let me go over a little further so we can get to page four and that's my transmission control module and that is my computer all right so here's my digital motor electronics or the ecm on the vehicle so if i click on that it's going to highlight all of the network wires associated with that let me zoom out a bit i can use this eyeball to dim the other line so i can get rid of the noise there we can see it goes to the transmission other multiple modules here goes across the screen the highlight carries through so it goes across again page three page two page one and that goes back to my i have one line that goes to my diagnostic link connector this one i highlighted earlier i have one line that goes back to my diagnostic connector and then all the other lines go into biflex ray and then there's one can line there that goes into my gateway module so central gateway module on this vehicle is definitely the gatekeeper for you know everything else in this vehicle so it also could give us a good test point you know maybe if we needed to test certain networks we could access it from this gateway module might be a good way to go if we're attacking that all right so there's that let's also go into some guided component testing because we do have some preset tests for this you don't really need to remember your voltage levels and where to connect and what it's supposed to look like so we going to guide a component test so let's say engine right because the engine is where all my network stuff will be i have a can bus i could go in a can bus here get some information on how that works right it's going to tell us how how can bus works what my voltage signals are two and a half volts to about four volts and then two and a half volts down to one volt for our signal range we don't want to see zero volts we don't want to see five volts or 12 volts i back up i can do a signature test it's going to give me tell me where to hook up it's good give me a known good pattern it's going to tell me what connector to use in this case they want us to go to the pcm i hit v-meter it's going to automatically set the voltage where it needs to be automatically sets the time base where it needs to be and then i can bring those close together and i can see my canmus pattern right here now this is on a simulator on a bmw but that is what it should look like if you look down a little bit further there's known good there's what we have going on on the vehicle you'll also notice i have this high spike at the end so i want to reiterate this for those of you who weren't here last time on some vehicles some manufacturers have decided to put in this extra bit of data at the end they called it an act bit or an acknowledgement bit that's basically acknowledging that here's the end of my set of data it's my period at the end of the sentence is what that is so that is uh here's the end of my bit of data whatever comes next is somebody else all right so that's how they can communicate and say which which uh module is what on the vehicle so that don't be worried if you see this high spike at the end on many vehicles that is normal some vehicles they don't include that some vehicles they do so we'll see that on the pattern up there all right so that is can bus and then we also have built-in we have a flex-ray bus as well flux-ray test there go in can do a signature test same thing so there's our known good flex-ray bus we'll see a slightly different so with no bus communication we see two and a half volts goes high to 3.1 low to 1.9 that's about 600 millivolts on either side so that is about a 1.2 volt range so it's a one to one and a half volt range is what we want to see in there and here's a typical waveform key on engine off all right then as far as anything else like i said specialized equipment and you're probably not going to be testing it with a component tester or a scope in that case so with that that is the end of two weeks of crash course on networks i guess you could call this right uh so let's talk about what we're gonna see next week so the way we structure these classes is we'll do them in five week blocks right so we'll have five weeks of new classes and then once we're done with that five weeks we repeat because we understand you know not everybody's gonna be able to see every week worth of classes uh so we're starting over next week with our class one of this five class block so that is code-based diagnostic workflow and that is actually a two-week course as well so we're going to have a you know the first half is next week we capture that'll be the second half the week after that is going to be um it is symptom-based diagnosis and then we'll have another two weeks of this uh network diagnosis as well so we'll be repeating that five weeks starting next week um so you'll be able to join us on zoom for sure uh you can also join us on youtube on tuesdays we'll be streaming the next two weeks on youtube so we get all five classes in the line there uh on youtube and then after that we'll be taking a pause on that and we'll be pausing for the holidays as well that'll bring us right up to about christmas the next five weeks so we're gonna pause for a couple weeks and we'll start back up again in january with maybe all new classes i'm not sure yet we haven't we haven't decided that uh we may take some of our other classes we did way a few months ago and bring those back as well not really sure yet but with that definitely register for next week hopefully we'll see you then i will now attack questions but before i do i will put up this slide so you can all take a look at this while i'm answering questions uh so my buddy alma caskey who is also on this call he helps me out with these calls he does a platform training specific to a tool uh online as well he does this on zoom uh so it's an introduction to your new platform or even if you've had the tool for a while and just maybe want to learn a few little tips and tricks you might not be aware of good class to attend it pretty much goes through the entire tool um anywhere from setting up your wi-fi through hey let's set up your free snap-on cloud account right so we can uh upload different reports and screenshots etc and share those with our customers so you can go to snapon.com not is the place to go to register for his classes his classes are a little bit down the bottom of the screen as of right now we might be doing a website change here soon but you should see any of the tools there just click on the tool and that'll bring you to the class for that or above that a little higher up on the page we have our class calendar and then below that you can register for any of my classes like you're attending right now i did see a hand raised and i can't hear your question so to speak so you do definitely need to um type it in to the q a box if you will okay so let's see let me close the this screen i'm on there we go oops i didn't want to close that though i need to minimize that screen there we go learn how to use powerpoint jason okay there we go okay so uh matt asks i updated the zeus to windows 10 and still have the red and black wireless adapter do i need update for ethernet accessing yes you do need that s7 module for ethernet even if you have windows 10 um it's when we made the change to windows 10 from the factory that's when they started shipping with the s10s included so you'll have to get back with them to get that s7 if you need that ethernet capability on your tool uh let's see jeremy asks do i have to have the ethernet cable if i only need information that would not be on that network um the tool is going to prompt you to have that cable on the tool if you need to communicate with any of those vehicles that have it so any of the vehicles on that list if you need to communicate with that vehicle in any way it's going to need that ethernet cable yes and lenny says thanks a lot for helpful info and lenny i appreciate you know i see your name in there all the time so i definitely appreciate your repeat uh repeat coming to these classes it's always good to have uh you know see some familiar faces in there as we go looks like on youtube we are clear of questions looks like on zoom we are clear questions i did see one gentleman raise his hand so if you could please if you do have a question please feel free to type it in and i will answer it live uh this way because we really can't you know can't turn your camera on can't turn your microphone off so i can't hear you hear your voice so uh if you type that in more than happy to answer it for you i'll wait another minute or two just because i'm not the fastest typer in the world either i take a look at who is here see a lot of familiar names on here so that's good i always like when you guys show up week after week it's kind of kind of feels like a little family right we're starting to build a little little training family i guess right if you want to think of it that way i know it kind of sounds a little cheesy maybe but all right good deal uh not seeing any other questions come in so with that i definitely appreciate all of you attending tonight hopefully we'll see you back again next week for our code based diagnosis class and with that be safe this week and enjoy the rest of your week and take care of yourself

Channel: Snap-on Diagnostics

Views: 44,564

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Id: mfwXgh57usI

Length: 40min 2sec (2402 seconds)

Published: Wed Nov 18 2020