Dodge Intrepid - No Start, No Crank, No Communication
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- Опубліковано 28 вер 2024
- Let's have a look at this 1998 Dodge Intrepid ES 3.2l V-6 that was towed in for a no start, no crank. Assuming it may be just a simple starter I did not bust out the camera right away but I soon discovered the security light was on. So join me as we have a look into this car to find it is a no communication issue from module to module on the Chrysler PCI BUS however we can still talk to the ECM!? Sounds like fun right!?
OTC (3415) CAN Test Box - Breakout Box and Protocol Detector: amzn.to/2qtpviQ
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--Eric O.
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
This kind of knowledge is the best knowledge, constantly wanting to improve the quality of your work, always determined to sharpen your skills more and more. Usually people loose interest after years of working on vehicles. Such a positive turn to the video when you say you are open to critism, no room for hate in that comment haha. Keep up the great work, I watch your videos almost every day faithfully. Your the best on UA-cam!! Mrs O is always a pleasure to watch haha you both are a sensation on UA-cam, would like to see more collaboration with you both !
Thanks for all the amazing videos !
IT guy here that also does his own wrenching. I have been binge watching your videos. I am impressed with your troubleshooting ability with regards to the computer systems and related modules on these vehicles. It takes time but as you say gotta go slow to be fast. Truer words have never been spoken. I regularly train a team of help desk and project engineers and will definitely be using that phrase in the future.
how about a SMAs frequency of videos of late!!!! keep it up eric
John Young, he's on a roll. 👍
yup eric o is bout that daily upload life!
Does anyone know if this is the same for a '98 Dodge Intrepid 2.7L???
Man, you're killing it, Eric! Having a new video every day is such a nice treat.
He sure is good to us that's for sure.
Eric you blew it away with your expert troubleshooting skills. Great job.
I love it when the door/ phone chime goes off that is the sound of another potential great video !!!!!
Your diagnostic skills are absolutely fantastic Eric, I wish I had some of those .......
I wish I didn't find these no-comm videos so bewildering. When you and Keith describe these problems it sounds like a foreign language, and I don't really understand it at all. What I find most astonishing is the rabbit out of the hat success you guys have, which is ironically even more frustrating, ha ha.
Eric O, the surgeon of automobiles. Love that new tool.
Lol Thanks!
Their truly is a God in heaven, 3 videos in one week. We are all blessed.
Great diagnoisis, Eric! I was getting a little nervous when you were talking about cutting that comm wire, but then you did the 2-channel scope and unplug it test to find the source of the data stream. Brilliant!
Well I was gonna cut it but came up with plan B. Hope the lady wants to fix it so we can get closure :D
in Chrysler school they tell you to just pull the bus to ground at any suspect module or behind any suspect wiring to see if you can crash the bus. if so wiring is good. works quick, works good. also be careful what wires you cut or modules you unplug because a low resistance module or two is wired in parallel with all of the other high resistance modules to set the termination resistance
Welcome to Eric O dodge channel.
yep..I discovered Eric channel back when he had 200 subscribers..watched the first one...watched another...and subscribed so I would never miss one.
I have learned so much about the diagnostic process from he and Ivan ..and can now read with confidence a wiring diagram and figure out the flow of the electric pixies
before them it was just a bunch of lines on a paper :)
Yes sir, I remember when u subbed!! Thank You!
every day is CHristmas at SMA
G'day, Mr. O! Your on a roll! A new video every day is such a nice treat. By the way, I love it!! "There's your problem lady..." Thank you very much!
Cheers!
I love how you talk about cutting the wire between the two modules and checking to see which side is active. I've done that before a few times because it would have taken way too much time to get to each module. But I felt so guilty doing it! Even though I soldered them back nicely and used the adhesive double walled heat shrink. Makes me feel better that other reputable people have done it too!
oh geez eric,it's 2:20 am California time.had to dig into the video. love the technical diagnosis vids...i secretly call you SCANNER O.keep up the good work. good night.
Javier Rocha That's some serious addiction there, wakin up in the middle of the night for a fix.
he's my favorite New Yorker...but Keith is gaining...
Javier Rocha i know, right. As a fellow californian always as i am getting ready to call it a night i get the notification. I can't pass up an SMA video. Sleep can wait.
GOTTA GET HIS ERIC O FIX AT 2 AM LOL
Keith is a real NY'er I am an upstater :)
One brilliant individual
Need more real live auto mechanics like Eric
Would get way more out of my car with his advice.
Great week for SMA!! "can you smell it"? I almost spit out my coffee LOL. ALL kidding aside, be mindful of the hours you're not at home, you don't get them back. I learned yrs ago after working 12hr+ days 6days and sometimes more. Just saying
Oh I know. Some days I just need to work late is all
South Main Auto Repair & James Zivny... kind of lucky that the family can & do spend time at the shop. My daughter is now grown & sometimes I do regret all the hrs of having to wrk, being the sole provider. No choice, such is life. I just appreciate every moment spent with her, period. She comes on job sites with me now, which I'm so thankful for. Little by little learning of little of everything. Slowly wanting to learn more because she 'grabs' things more. Hopefully we'll continue like this for years to come.
Heartwarming!
You are a beast man! Awesome diag on this thing. Your knowledge of Chrysler is impressive, no one drives them here so I rarely see them.
Cool, a guy on UA-cam right outside Bath (Hammonsport NY), how cool is that.
That's great living in that part of the woods, Love that Keuka Lake, awesome.....
Mike Oneill not sure if...
Would appear that your problem is going to be a communications fault within the ECM if I followed your diagnostics correctly. Very NICE on the diagnostics.
Yep you got it! ECM is shot.
Another nice one. Must say I really appreciate your productivity video wise. Any multi part project in the near future? Those are my favourites. Thx for sharing. ☺
Oh Yeah Man - Covering Your Hole(s) is always a darn good idea and completely expected all around the globe...
I just thought ide mention this i have a 1996 dodge es 3.5 l engine with only 1.21 on the odomoter and no money light. Also i own a 96 chevy tahoe no money light and its 5.7 l engine with a 1.23 on the odomoter both have origional steel brake likes with no rust on any parts of the cars. I anually undercoat with fluid film. It works like magic. Anyways i have both those cars in great dhape just thought ide mention. Keep it up mr.o
Continue to be amazed at the two thumbs down. I guess they are the reason there are safety warnings on EVERYTHING!! Great work/video!!
What is up with the 18 bad thumbs down. Have respect for Eric will ya.
Only 64 3 years later! Not bad!
@southmainauto
love your way of checking powers and grounds at a module. my instructor always tells me to voltage drop the wire to battery ground or possitive... and to do it on the scope. so it's nice to learn some more simple ways to diagnose simple circuits.
Test light for the win. Twice as fast and just as accurate.
Another great one my friend. Your knowledge always impresses me. thanks!
No comm's are my favorites videos to watch 😀 Greetings from Romania, keep up the good work !
They are my favorite to diag too
what a treat this week Eric
with 4 vids. thanks
Stay tuned :)
5
I'd junk that pile of junk myself. Just wish i could get you here to fix my van. Another dodge. 105,000 on it and it starts n bucks n kicks. Rebuilt about everything i can think of. Love your vids Eric, keep up the good work! If you ever get an 03 ram 1500 van with the 3.9 let me know!
Amazing, I'm learning more and more all the time watching your videos. Thanks for passing on to us the knowledge and skill you have.
hey eric gotta say ive seen i think every one of your videos and learned some stuff from u gotta say thank u and u r awesome keep it up
Your Audio.....For all the years I have watched every week your audio has always been excellent...Your in a noisy garage .....
Good to know!
Bloody Heck Eric you dont half put the hours in for us8.00pm get home to those kids man the car can wait till tomorrow.....Thanks ever so much for your time. thumbs up as always.
No time tomorrow that is why I had to stay late!
Mr O you did a good approach
Super common on these old Chryslers. I have seen bad ecms causing the ac to malfunction.
Thorough diagnoses, Great mechanic. Great guy. Keep up the vids cheers
Gaining a ton of Chrysler experience.
My approach would be to bring it to you! LOL!!
Well there's familiar! I drove a red 2000 Intrepid ES 3.2L for 8 years. Sold it with 308,000 on it because I got tired of putting $2k/yr into front end components. Still ran great, though. Only oddball issue I remember was the water pump gaskets tended to wear out and start leaking after 80K or so.
Good job. I got a '93 that I can't let go, lol!
Makes me miss my Intrepid ES and all of its mechanical weirdness...most notably the battery location
It's Eric O. week on UA-cam! Hoping you get the job to replace the module...it'll be interesting to see how hard it'll be to actually find one. I see some Intrepids around town here in Rochester, so they're not all dead yet.
I can have one brand new the next day if she gives me the OK
Wow, for a 19 year old car? Hope it's not a Dorman. ;)
I love my breakout box I got mine with my Pico scope kit. Makes it easy to hook up to network and find problems on the network
Oh man it sure does!
That's some great troubleshooting there. Most shops aren't fixing that problem.
I can't believe this 98 dodge lived longer than my 98 Chevrolet. I hate to say it good job dodge.
Killing it. Hope the owner got it fixed. At least it is diagnosed.
Thank you, thank you! You have a great way of doing the problem solving. Methodical and good video filming!
I’m doing a Citroen. With same code but I’ve got no comm bam,ecu so really interested.keepgoing Eric.
I wish I was close to your shop. I need somebody trustworthy enough to redo some modules in my 2002 Durango. The pcm failed and was replaced with one from the junkyard. I also had to replace the body module a month before. Now it runs great, but the climate and abs modules were not happy. From what I understand, it involves reprogramming the body module with the correct options for the vehicle, then running a calibration command to the climate control and setting the pinion ratio for the abs
Good job!
You could have saved a few minutes on that ECM diagnosis by looking carefully at that scope trace when you first probed into the wire before the ECM connector. As soon as I saw that trace I knew you had good comms to the BCM from the scope. How?
The trace showed pulses of slightly different heights. This told me I was looking at a bus with several modules on it, and they didn't all drive the bus high to exactly the same voltage. So I knew there were at least two modules talking on that bus, down just before the ECM.
Now one of those could have been the ECM, except that the BCM said it wasn't talking.
So what must be happening is the BCM is basically "OR"ing all of the PCI comm lines together inside, and we are probably seeing the BCM and some other module(s) talking to each other. Which modules? Don't know, don't care. I just care that there is more than one, so I know we have good comms to the BCM to that point.
Now, the ECM may be futzed, or the connector might be dirty. Can't tell at that point. My next step would have been to try to pop and reseat the connector on the ECM, then check if the BCM said that it sees the ECM. No? Replace the ECM. Yes? Clean the connectors on the ECM, replug, and see if things now work. If not, replace the ECM. If yes, send it out the door.
Now you won't always see different height traces when you have multiple modules on a bus. They could all pull things up and down to exactly the same voltages. But it isn't an unusual thing to see different height traces from different modules, and it is a fast indication that at least two things are trying to talk to each other when you do see it.
that's a really good tip. I think these PCI modules are terminated with different value resistors to determine bus priority and I think that would be indicated by signal height.
Absolute madness! I’ve watched a slug of your videos and when the dealers have to cry uncle and bring them to you there’s the problem lady. Your skill is awesome but this video tells me that finding someone with your knowledge and equipment to tackle the huge wad of spaghetti and sensors crammed - shoehorned into the vehicles we pay many thousands of dollars for to me qualifies as Insanity. Someone like me who grew up working on 40s ,50s - 70s cars where you could change a plug without partially dismantling the engine leaves me shaking my head. Working on what I own now with what I know and the tools I have has put me/ us in many an untenable situation. And I see it getting worse and more and more expensive. The move to electric with equivalent or greater range and turn around in charging can’t come soon enough. Death to the internal combustion engine. Hurry up graphene batteries. I don’t have that many hairs left to pull out.
Yes; just wait when the all electronics, all the way, starts to fail... fun!
Damn near unfixable without a couple grand of test equipment and this was what, 1998?
Like for Intrepid! LH2 for the win! :) holy crap, looks like Eric sits in my car
Btw, when devices within a tool or externally to other devices is required and or made the action of that process is called a function of a "handshaking protocol".
Where were ya when I needed that lingo making the vid!?
Ah, duh, ermm heck man I don't remember the last time i picked my nose and you want me to guess when you need a belly rub??
1998 seems like just yesterday, until I do the math. Where did the time go? ! ?
When you plugged the BRB into the BOB I was going to call the BBB on you, BUB. 😂
big fan of the new vid start. no jingle ... bouya
The headache with modern cars, but matters comes to worse you could probably find a soldering iron wizard and open up the offending ECU, sometimes it's as simple as a broken soldering or moisture that has started to come into the module starting to oxidize around the offending pin.
it would be nice but those PCMs are potted with THICK silicone gorilla snot that makes them almost impossible to work on
20:23 I can imagine MrsO looking from the office window *rolls eyes, thinks* like a big kid with a new toy
and i wanted to sleep early again oh well
SMA b4 anything or anyone else
Judging by the length of the test leads that must be a Snap On Fancy ECM Powers and Grounds Testing device.
Lol yes sir. I know some guys that don't like these fancy things but then again they don't know how to use them haha ;)
Then there are us that wish they have these fancy devices and knew how to use them..thus we watch you to learn a little. Great vids. Keep em coming.
Dude you are going to be a hard one to beat, nice diags..
Learned something Eric. I like the headlight bulb to check wire continuity. That's a really good idea and quicker. Are the connectors paralleled so if you unplug a comms connector you only lose what that connector was plugged into? In other words, the ring doesn't lose continuity and the other modules can still communicate.
I would hate to lose track where I poked it. LOL gotta luv it.
Ain,t no robot gonna put you out of a job Eric !
That was a great video I would like to see more bus videos
That Charlie and the chocolate factory reference 😎😁
Impressive diagnosis!
Fresh of the hook!! YAAHHH!!
Eric - I understand that disconnecting the BCM connector, and seeing the data stream go away, you assumed the data stream was being initiated by the BCM -- that makes sense. However, why did you not THEN unplug the ECM connector and verify that the data stream was still there? I thought that was a pretty small step to prove your concept indisputably . It would also take out of the equation the possibility that the control modules cut off all comms if they somehow see open connectors on the bus.
Sure we could have taken it one step further just to see but I am 100% in this diagnosis.
Tech skills on par. Amount of grease and brake dust on hat intriguing. Good vid bud. Could have saved you bunch of time soon as you seen it was a Chrysler BMP. At least its not a 2.7 might still be worth getting new or used ECM.
Nice work Eric! I like to stay after hours to get my head round a job, doors closed, pressure off, engage brain, then the phone rings! Aaarrrhh 😡
if ya dont do after hours ud have no hair left LOL
I know right! Way it always is!
though you pierced the wire at the ecm, that was an external check. was the seal on that connector still good? you normally mention your check for green crusties on the connector pin itself? did you make sure that pin was clean internally? And also a continuity check from the pierce to the pin just to make sure the wire didn't break at the back of the connector pin., or place the scope right at the pin by removing the connector from the ecm just to check the last few inches of wire.
I was thinking the same thing. Most of his other diag videos he always checks the pin and pin fitment.
I also thought the same thing. It's very possible that the communications line is open at those last two or three inches at the ECM. That would really bite, especially considering the location of this ECM (It would really suck to R&R the ECM and program it to find that the same issue exists).
Edward David he did unplug it and check power and grounds. he would have noticed it then
I think he knows what he's doing
I gotta ask one thing. For us dummies. At the end can you be more specific. Like ok viewers I've covered s lot of things. The bottom line is..... that could be helpful as we get lost. Thx and great job
Shweet, vid before work!
Yay! Another new daily episode!
What in the "thunder" indeed
Next you're going to start singing Frozen songs at us?
Good job as always... I would of approach this technical issue by...........wait for it ... wait for it... Parts changing haha
Hahaha!
i have the identical car, year, engine and color with similar problems, if you were not 500 miles away i would have ya fix it!
I sure enjoyed this video.. A+ Eric
Good work Eric..!! Hope you get the job..
Love your videos Eric. I just got a snap on Data Bus Fault Finder tool EEFF500. can't wait to use it and the blue point obd break out box. this box doesn't have the fancy led lights like your otc box. keep up the hell of a great job . much love from Phoenix Az. I'll have to order a shirt.
When you unplugged connector at ECM and lost com, did you disconnect any other wires in same connector that would cause com loss? I can see how cutting just com wire would be a good test.
I did exactly this on my 99 intrepid. Cut it up under the dash. Only in my case it was the BCM that was not talking to the PCM. Think I'll put a bullet connector in there for the next time I want to test it.
Chrysler and rust, the big money makers for SMA.
sure are
Uhg.... Looks just like my 04 concord under the hood..... I'm sorry you had to deal with that.
GR8 VIDEO ERIC O
A Chrysler product with 200K+. Miracles do happen
Thanks for the video.
>raising hand< Ooh ooh! I have a question! When I saw that the trace has 2 TTL levels, I assumed that the ECM and BCM modules were yapping away (since it's a direct link) and would have started poking elsewhere. BUT, I see that BCM loops pin 1 back to pin 2 on the DLC according my diagram. To save my sanity and my ASSumptions, tell me there was something plugged into the DLC and the 2 levels I saw was the BCM and the scanner trading fish and spinach recipes.
If you are talking about the 2 traces you saw on my scope the were hooked to the same wire (PCI Wire from BMC to EMC) I was using it to determin if the wire was open and if both modules were talking. Does that help?
Nope :) In all of your scope shots I saw pulses at 2 different amplitudes. This suggests at least two different modules were active. Since you were testing a direct line between the BCM (pin# 1) and ECM (pin# 59) I thought both were active. When you pulled the BCM connector and all data stopped I was a bit confused so I looked up the diagram and saw that the BCM pin C3-1 (PCI line) is carried back to the DLC via BCM pin C1-14 to DLC pin 2. That's when I suspected that the data stream we saw was not BCM to ECM as I assumed, but BCM to the scanner.
It didn't dawn on me until after my comment that the PCI line you tested could be a shared bus simply routed through the BCM and not a star network like we saw on Danner's Jetta. All them yellow/purple wires weren't smacking me hard enough to give me a clue :(
Remaining clueless, had I used a DRB and not looked at a diagram, I would have been stumped when I could access all the modules, not knowing that the PCM was accessed via the OBD bus via pins 6/14 (hence the delay?) while the rest were talking via the PCI net. I wouldn't have caught the missing BCM/ECM link before lunch time - the following week.
Not having your vast experience and owning a scanner I bought hanging in shrink wrap between the Slim-Jims® and nail files in the checkout aisle of 7-Eleven (that can only access generic OBD2 DLC pins 6 and 14), I bow to the professional. Great work. It just took me a bit to follow along :(
Excellent video. my question why using 3.9 amp bulb instead of test light?
Old Chrysler is an oxymoron in Northern Ontario. Loved the look of these cars but there was so many issues with them even before they all rotted away.
Welcome back
Car's are so much more complicated than I thought
Hey Eric. Love the every morning videos. Great way to start the day off. Quick question regarding the ecm or pcm. Could you of just reflashed it and maybe it would work again?
Highly unlikely
Bekim Krasniqi are you a tech?
good job........... I would love to see that car brought back to the best operating condition possible. as long as the rust worms haven't had it's way with it.
Eric, any chance you can do a video of your State inspections? What items are pass / fail? Would be great to see and compare with UK Mot
Lol the big Y & N on your scope reminds me of a Jitterbug