Intermittent but not really CAN Bus Fault

[@v8motors.]

Jake the 'Sherlock Holmes' of the Auto Electrical diagnosis. That was an excellent demonstration of following a fault to the logical conclusion, even when you thought it was going to be in the door channel the data said otherwise. 👍

[@autodiagyt]

You gotta let the data drive you as Bernie would say

[@atichargr]

Another great example of following the data ! Awesome!

[@PineHollowAutoDiagnostics]

Nice diagnostic process, Jake! I was guessing a rubbed harness under the truck... But looks like some expensive parts will be required on this one 😬 Was the water pump leaking?

[@autodiagyt]

I'm not sure what was leaking, I'm waiting for them to swap it still and I want to pull the cover off and see if it's got coolant in it.

[@bilalalmarghani7163]

I like your video too I learn fromFrom all of you diagnosing faults started this work about a year ago thank you all for this good effort

[@Wayne-p7n]

@PineHollowAutoDiagnostics good to see the respect Ivan gives to acknowledge good works

[@Friend_of_the_One-Eyed_Ladies]

@PineHollowAutoDiagnostics: Resistance was rock steady, far too stable to be a chafed wire.

[@autodiagyt]

@@Friend_of_the_One-Eyed_Ladies except for those couple of times I seen it jump up to 100 ohms.

[@Wayne-p7n]

Man you just have a sixth sense for this stuff, allways enjoy your videos

[@john7017]

I like it! Well presented, easy to follow, right to the point. Jake is the best mobile troubleshooter on you Tube. I think the owner should repair the coolant leak also to prevent trashing the new rack module.

[@palmtreemechanic6973]

I really appreciated you taking time to draw and explain the resistance thru the network , that drawing was the key for me - after that it was easy to follow the logic ; I wish all diag masters did that

[@kevinwalker4623]

You can word fumble all you want, the education is worth its weight in gold!

[@GregoryBirulkin]

Thank you so much for taking the time, by your video recording the diagnosis with the camera for your KZbin channel viewers. 👍

[@ashercohen4739]

You present the diagnostic process wonderfully, thank you

[@chucklong66]

Watching your vids has made me a better diag tech in real world applications. Thank you!!!!! Keep em coming. 100 👍

[@alrifainidal]

This is what I love about the CAN Bus Diagnoses. Thank you very much you're the Man for the CAN

[@codyarizona4925]

Awesome stuff! I think you're right about the coolant leak possibly taking out the module. Definitely love the can bus video's. Nice work 👍

[@AAB371]

Great presentation and discussion Jake, Don't change a thing, you are doing a great job. Oh yeah, I understand you clearly as I am a native Southerner... Keep the videos coming

[@stevejohnson345]

Another great diagnosis! A scope and a good quality multimeter are definitely mandatory tools when dealing with can-bus network issues and this was a perfect example.

[@michaelhomdus4945]

Great diagnosing and showing us the step by step. Boy, I couldn't do that talking to us, looking at the wiring diagram and focusing on your next step. I envy you guys that can do that. I would lose my train of thought instantly. Thanks Jake.

[@autodiagyt]

It's pretty hard lol. I thought in time it would get easier but it doesn't 🤣

[@aamechanic8154]

It was nice meeting you at the expo last month. I find it awkward introducing myself to someone throwing axes. Lol. Great diag as usual...

[@autodiagyt]

lol no worries

[@ysitrim88]

Awesome diagnostic video Jake you're the man!

[@jansonauto]

I usually turn on mask to math channel with alarm set, helps from getting up and down when your 65yrs old lol Great job! Thanks for sharing!

[@PhillipBailey]

Great case study. Only comment I would make is I find it beneficial to use a graphing multimeter. Amazing how bad the bus signal can be and still work! And you're correct that talking on camera is not easy. Great presentation!

[@TheReal8deal]

i gotta catch up on your videos next haha. great minds seem to find each other in similar places.

[@marcdrouillard4055]

Hi Jake. You really aced this diag!! This kind of CAN failure gets even worse when CAN FD com speeds are resent in a vehicle.

[@ibrahimwaheed987]

A very good example of following data.very informative Jake!

[@Mr2004MCSS]

This was a great case study. You do an excellent job of explaining the process and showing what you are doing. I learn something on every video.

[@mikechiodetti4482]

This was an excellent diagnosis. You demonstrated how this is done. I agree about the P/S Module, but I would insist on having the shop see that coolant leak that needs repair or the p/s module could be a problem again. Just saying. Other than that, nice work Jake!

[@neverstoplearning382]

Another golden diagnosis. God bless Jake.

[@JoseSilveira-newhandleforYT]

Great case study, Jake! Not all intermittent faults are as they seem. Superb diagnostic strategy, eliminating all the usual suspects, until the culprit was isolated. Pretty expensive culprit too. That coolant leak must be fixed before the new parts are installed, or they wont last long. Pretty sure customer preferred to have a run-of-the-mill intermittent wire fault 🙂

[@RandyFromBBlock]

That was great. Very educational. I will be wat hing this again. Interesting that the can bus design is so good that it can still work with a horrible wave form.

[@rogerskuria1000]

Big love from Kenya bro, I learn alot from your videos. ❤❤

[@bilalalmarghani7163]

Thank you for sharing this diagnosis I learn from you because I am new in this field for almost a year continue to do so and thank you

[@mikefaulkner9480]

Nice video. Thanks for taking the time and not skipping steps. A task that would probably take you 5 or 10 minutes without filming and sharing your thought process.

[@john82324]

Well done. Great information

[@cullenmiller8170]

Great video and case study. If you dig dip enough in that wire run along the rocker panel you might find enough change to go to the Dollar store. 🤣🤣

[@mark2020]

Fantastic learning a lot!

[@jgeorges3061]

Jake. you rock brother the way you approach those problem is AWESOME simple but really affected to get to the bottom of the problem more of those videos wold be great those information you showing no school or courses would teach u in my opinion keep at it and appreciate ur time and effort to show all this hope one day ur channel will reach 100k sub cheeeeers from Ontario CANADA.

[@paulspeller968]

man that was awesome . really interesting one for sure . plus you really showed how to narrow it down . top notch . and how about that . i have done a far few can bus faults in my time shorts but never really thought about how the short one way flows through the resisters but the other way flows straight to the ground point 🤣🤣🤣 i guess i probably did but never really thought about it because i just chased the short because i split the circuit until the short went then chased it in that length . but every day is a school day my friend . and you make me remember stuff i had forgot( dam i am getting old 🤪🤪)

[@robertolaggo9141]

Still can’t believe Jake has only 18,6k subs. His content worth at least 100x more. Thanks for teaching us. Greetings from Ireland

[@autodiagyt]

I'm still pretty new here lol but I'll get there!

[@robertolaggo9141]

@@autodiagytno doubt! BTW where is your hat?😃

[@autodiagyt]

@@robertolaggo9141 this was at night lol

[@ratrodnation]

Another great troubleshooting job. Thanks for sharing.

[@ws2664]

all your can bus videos are great, us old dogs are slow to learn.

[@orkidorkid]

Great network diagnostic video, as usuall. Thank you 👍

[@brakeboss]

Amazing diagnosis process, Great job Jake.

[@spirokattan3655]

Great case study, diag and tutorial. Thank you Jake!

[@joehelf]

This is my favorite one I've seen by you so far. Intermittent faults are the hardest to diagnose. I'm working on a GMC Terrain with intermittent faults. I will try again.

[@greggc8088]

Man that can be some tedious time consuming work trying to find. Almost like the old phrase of "finding a needle in a haystack". A lot of techs I deal with on the tech line give up and considering how some shops pay, I don't blame them. This is exactly why shop owners and vehicle owners need to understand there's no place in the auto repair industry for the term mechanic anymore and realize the depth of the work we now do. That's a tough one especially at the dealer level when car salesmen are running things. My advice is to get a salary in writing and a good one or shake the dust off your feet and go somewhere else.

[@prashanshan7125]

You are a great technician..!

[@tverrettsr]

Great video..... I can't help but notice the excessive amount of sealant sticking out the module, and the green almost looks like salvage yard writing.

[@Personalized_Workshop]

Perfect case study, live. Very recently subscribed and this is why I’ll be staying around. I think the coolant leak won.

[@NoName-yr1jv]

Well done Jake 👍

[@philh9238]

I kinda like the way Ford does there can bus. When you unplug a module you’re not stuck jumping can wires like gm. But Chrysler or whoever they are this week is the best with the star connector

[@LynxStarAuto]

Ford wiring sucks ass lol. GM's wiring is put together like a toddler who is blind, deaf, and *etarded, but at least they understood what they did, and made it easy to access for testing

[@jhonyguzman643]

You are the best

[@robertmobileman8304]

Awesome Jake , all your videos great..good job man

[@Dave-dm3xs]

Great video, interesting failure, expensive coolant leak. It would be nice to see the state of the module inside.

[@najihusseini6679]

I like it and thank you for your patience

[@jarridmenzemer6183]

Definitely like your troubleshooting

[@agoodneighborautorepair2176]

Very good explanation and information

[@kyletuttle9064]

Great can bus video Jake enjoyed as always.

[@jonsvideos321]

Nice work. Thanks for a detailed video!

[@robertfrancisco1193]

good work. i like the way you think!!!

[@bobcombs7138]

Excellent once again!

[@saibabupodala6297]

Very good information

[@kenputt1750]

I like it and caused by a known problem with Fords, anti freeze leaks. Water pumps are known to be a problem and cause even more problems when not takin care of.

[@engineeringeye4902]

Hello sir ！ I really like your diagnosis method👍

[@chekelley6861]

Keep em coming!!

[@davidscott4849]

I’ve seen this multiple times on Fords from the Previous decade. If I find the Can bus fault leads forward of the Firewall, I disconnect the PSCM connector first. Saved myself a bunch of diag time several times. It’s always Mustangs and F150’s….

[@danman9017]

good video thanks

[@robertmedina6875]

You know it’s a bad day at work when you find a prophylactic in the car😅😅

[@rogerdedrick373]

Great video

[@GraditelMacedonia]

0:07 Aaaaand CAN BUSES love you!

[@0876juan]

👍 great

[@MDTA-AUTO]

That was a real good one bro .... I wonder what the dealer would do : )

[@JorgeChicago1]

Amazing

[@JerryNoonan-c3w]

Great Video..

[@MprahEnock-db8ti]

I'm from Ghana you are Great

[@martinarrieta248]

Grasias

[@zackclark2214]

This is the second time I have seen this happen. When I had mine the vehicle came in for a recall that was a pcm update and an oil change. Customer had no symptoms. The scan tool would not update the pcm. Continued to say it lost com with the pcm. Ended up being this exact concern. Guess the short was too much of a fault to reprogram but not enough to cause communication concerns with other modules.

[@rodneycampbell03]

I did a 17 ford f150 the other day where the coulumn shifter wasn't working and I traced it to no power on the brake pressure switch, so I followed the wires under the panel when you open the door. There was some corroded wires. The 12v wire for the pressure switch and a CAN line wire all corroded. Repaired the wires and everything came back

[@nurbster]

Recommend a better DMM with remote smartphone functionality. Hioki has Android & iOS apps that allow you leave meter in place and view everything remotely on your smartphone, capture data for report generation for customer, etc. I replaced my Fluke stuff with Hioki in 2016 and haven't looked back. Also made in Japan. Might as well make it a current meter ( current clamp built-in ) as they give you all the functionality of a standard DMM with inductive current functionality. Thanks for the CAN videos, good troubleshooting techniques within.

[@autodiagyt]

Yeah I’ve thought about getting something like that but just haven’t decided on what to try.

[@alshore6168]

👍

[@DependableAutoTruck]

i like the can buss don't fully understand why its needed trying to learn more about it why its needed and why it needs 2 resistors just havent fully understood the need for it i know it is a com line for the different modules to talk. guess my biggest block is the need for some of the modules

[@Alaskan_Two_Spirit_Wolf]

What tool are you using?

[@markvl11]

The rusty crusties and bare wires are sometimes to find without some visual inspection.

[@Alaskan_Two_Spirit_Wolf]

Can this be the issue with my car? ABS was intermittent earlier this year. Was told by a o riley worker that it happens with new cars when it rains or snows, will trigger. To ignore it. Was very rare this winter. Only in last 4 weeks or so it wont turn off. Off o riley scan, bought solenoid and replaced it. Didn't fix it. When i gas up, won't turn over. Then the parking brake malfunction light flashing started in last 2.5. weeks or so. Today flashed immediately and constant in 10 minutes before steep slopes.

[@MichaelBennett-ru2nu]

So the intermittent have to do with where the rack was positioned at?

[@autodiagyt]

Not really. I drove it several times and had no symptoms or codes resetting then one day it was acting up alot, then this day I actually had time to test things it was acting up until I got it inside the shop and it quit lol.

[@rodvan-zeller6360]

Great video. Were there codes? Is it possible this system goes into single wire mode as a back up?

[@autodiagyt]

Just history comm codes

[@rodvan-zeller6360]

@@autodiagyt Thank you for the reply. Most of the calls I get are communication issues and parasitic draw issues. Your videos are excellent, I am a retired automotive technology teacher, always kept a part time job at a shop doing diagnostic work.

[@Max-j2r]

❤❤❤❤❤❤❤

[@mikeburchett-bs3qw]

👍👍👍👍👍

[@101thenuke]

Surprised its running with that Can-bus Jake.

[@randyhughes5160]

It was good

[@kylewilhelm9397]

Do you have any merch available yet?

[@autodiagyt]

No but I'm working on it.

[@kellygibson7299]

Come on, Jake! That coolant leak is deceiving. It clearly just needs a windshield wiper and a BCM. I thought you were better than that 😅

[@hikerJohn]

@ 26:35 Yeah, it's hard explaining all this without a camera for me as I tend to forget the words I need.

[@Chazz1994]

Hi I'm working on a 08 santa fe that has 60ohms can Hi to low, 0 from pin 16 to ground and about 450 from can hi/low to ground. I checked another car an had 55million from can hi/low to ground. Can that number vary between manufacturers or do I have a problem somewhere? Well, I know I have a problem the car stalled while driving, havent gotten any codes. I posted some scope pics on scannerdanners website but haven't received any feedback on the latest pics. Any help is much appreciated!

[@Chazz1994]

Feel like I should add that I disconnected the battery an the can hi/low to ground went to 4700ohms. Unhooked 1 side of the ecm an it changed to 7100. Unhooking the other side made no difference.

[@autodiagyt]

If you have any bus activity it will throw off your ohm readings. For this reason I do almost all of my resistance checked with the battery disconnected or I've waited long enough to know for sure the bus is asleep

[@robertsmith2956]

when you put your weight on the door rail, the entire car moves down, so could still cause wire in engine compartment to change.

[@mattrusselljones]

Electrical circuits hate coolant way more than regular water lol

[@chekelley6861]

It’s funny when people say “testing resistance is worthless “ lol

[@autodiagyt]

A resistance test by itself will always tell you a bad circuit is bad but will never tell you a circuit is good.

[@bobcombs7138]

​@@autodiagyt Words of Gold!

[@DependableAutoTruck]

why is a power steering module needed what does it actually do

[@autodiagyt]

Reduces emissions

[@howardsnellgrove9516]

How does it reduce emisions​@@autodiagyt

[@GroundedDiagnostics]

👍👍😊😊

[@calholli]

I would have took some air and sprayed out the connector on the module side.. and just make sure there's not a bit of coolant shorting across the pins down in the connector itself.. but otherwise, this is why you can't ignore coolant leaks. I bet the water pump has gone bad and it's leaking from the weep hole.

[@autodiagyt]

No ground in that connector. Just 2 can wires and a ignition.

[@peterbenson3776]

Its always a murder mystery lol

[@Alaskan_Two_Spirit_Wolf]

What is this tool called? 5:10

[@autodiagyt]

That’s just a Digit Volt Ohm Meter.

[@LynxStarAuto]

No! They need to fix a coolant leak, THEN get a power steering module.

[@autodiagyt]

Yeah it needed both fixed.

[@bernardaflores1720]

You need a rack plus fixed the leak otherwise it would be back