Jeep Commander CRAZY Case Study -Part 2

Now that we recreated the customer complaint, let's focus on the P0882 code and finish this long and twisted diagnosis!
HAPPY INDEPENDENCE DAY!!
Enjoy!
Ivan

[@jon944]

I have a 06 Commander with the Hemi. I had this exact same issue, limp mode, dash lit up with all the error messages and idiot lights. Mine didn’t fail as consistently as the one you worked on but symptoms were exactly the same. The dealer replaced PCM and TCM but eventually the problem returned. For me the solutions was a new shift module. I found the answer on a forum. I changed it out and never had the issue again and it’s been 7 yrs now and about 80,000 miles. My Commander has 230,000 miles and I’m the original owner.

[@dougbryan6721]

your diagnostic skills are fantastic, I like watching the mystery(maybe misery) get solved.

[@johnminor2496]

Ivan, I am not a technician. However, I try to keep up with you when you are discussing any diagnosis. I really appreciate your skill set. I will continue to watch your videos. I enjoy them very much. GOD bless you and your family.

[@mansonmydog]

It's a Jeep thing, it's not going to the scrap yard, it's called going home.

[@InsideOfMyOwnMind]

Crossing the rainbow bridge.

[@MrAnspachkurt]

ur dumb jeeps have been around for a long time dont forget they were a military choice for a while

[@mansonmydog]

@@MrAnspachkurt You sir are ignorant, they arn't even Jeeps anymore.

[@1977jelliott]

@@MrAnspachkurt those Jeeps weren't Chrysler Jeeps, they were Willy's Jeeps

[@paulmoffat9306]

In 2019, Fiat-Jeep-Chrysler had 3 vehicles listed on Edmund's '10 Worst Built US Cars', ALL were Jeep branded.

[@chiluco2000]

Haven't waited with anticipation for a follow up youtube video like this before. Thanks for the follow up! And your wife is lovely, lucky man!

[@akaredcrossbow]

My electrical code disaster that threw all kinds of codes that had nothing to do with the codes it was giving me, ended up being 3-6 melted/fused wires under the second row of seats. There is a harness that runs under the carpet from left to right of the truck. The harness is unprotected and sits on the metal floor pan under the carpet. Also this is where people step on the floor. The muffler is directly under those wires and melts them and also discolors the floor pan and burns the rug, could set the truck on fire. When touching the melted wires the Jeep came back to life, and all warning lights off. I wiggled them more and the truck died wiggle again and back to normal. This issue could also be the crank no start problem. This is definitely one place to look if all else fails, and it’s also good to look at to see if anything is going to burn up the truck. This should be a safety recall, because it’s dangerous.

[@alexpmK3]

This guy is an awesome mechanic who gets all the jobs no one else can fix..

[@rhkips]

"It's inconsistent." Not entirely, Ivan! This is Keith's famous "heat and vibration" on a much, much smaller scale than we usually deal with. Any PCB/Electronics engineers are welcome to chime in and correct me, but it's my understanding that this is a transistor failure mode. While ambient temperature plays a roll, I think what we're seeing here is internal thermal loading causing the transistor to fail gently (rather than cratering) each time it's loaded, and recover just enough to almost function once it's turned off. I have a feeling there's a lot more to it than that, but my limited familiarity with PCB-level component function leaves me not wanting to speculate too much beyond that. Hope you had a wonderful 4th, Ivan!

[@throttlebottle5906]

right, take a small hammer and peck at the PCM/TCM also, it'll probably go berzerk... add in heat gun to cook it more..

[@garyashdown5376]

Ivan me old mate you amaze me, the logic you use to track down a problem and then test your diagnosis till your 100% certain is really cool. If it was me looking at that Jeep my first tool would be a 4lb hammer the second would be my feet as i have it on my toes and do a runner. Love the posts and hope the wife mends the horse with the gaffer tape. 😃😃🐴 Gary..... England 🇬🇧

[@ChrisBrocksmith]

I know this is over 2 years old however, I want to thank you for this 2 parts series and understand that the customer declined all further repairs prior fixing this Commander. I had the same issues. Your diagnosis, to replace the TCM, was perfect on my 2006 Commander. I watched, I followed, I watched, I checked and finally threw in the towel and replaced the TCM. Worked beautifully! Thank you so much.

[@jacylemaire3948]

Chris, where did you order your new TCM ? I need to fix my jeep :(

[@martinfarley2026]

hi from the uk , that was an impressive piece of diagnostics '' crazy sums up this one ''

[@joehomanick]

We just had this same truck with a 4.7 though needed a pcm got one for $75 and the autel programmed it . Great diag Ivan

[@PineHollowAutoDiagnostics]

Nice! If it was my own customer, I would have looked into a "cheap fix" :)

[@steveconroy1614]

Another awesome diag Ivan. Thank you so much for sharing. Regards, Steve.

[@stevefleck5892]

Thank you for the follow ups Ivan! Finally closure - almost! Fantastic diagnostic approach and effort.

[@johnarrington6292]

That was a really impressive display of diagnostics. Smarts and tenacity FTW!

[@johnshuttleworth6879]

awesome work my friend, love your work. Keeping me entertained in the uk while im changing an axle on a pile of scrap van

[@wyattoneable]

"Double bonus footage" That cracked me up. Your experiments are very interesting. The follow up was very much appreciated too. Thanks Ivan. Hello Amanda!

[@mmichaeldonavon]

Ivan. You have the "right stuff!" You can "hang in there to the absolute end!" Very few people could, or would, do this. My hat's always off to you. Thanks for all of the knowledge that you've imparted to me. Thanks.

[@nv1493]

Well done. The only thing worse than a tough diagnosis is a cheap-a$$ customer that just keeps driving it like that. Love your videos, they've helped me a lot.

[@ChicagoDoItYourself]

gotta love the bonus/double bonus footage !!! : ] you're a friggen genius ! ! !Wonder if it would be a bad cap... not necessarily a transistor... heats up almost shorts out sometimes... seen it with power supplies

[@deepsquat600]

I like that Ivan you had bonus bonus bonus bonus footage.. I was trying to help a guy the other day that broke down at the apartment complex that I live at I know start with a crank first place with LED to was fuel and Guy kept trying to jump around from place to place to place unlike trying to find one logical Pathway to go through I wanted to test the fuel pump was a Volkswagen with no Schrader valve so went back to the tank try to do some electrical testing and the guy still wanted to jump around took I finally walked away then the next day I came out told him I read an article to how to exactly test his make model and year ran the tests had a bad fuel pump had an open circuit inside the pump itself and the guy wouldn't listen spent another two days before he had it towed away to a shop I was laughing inside... Because I really appreciate your methodical method of trying to find a problem and targeting in on it and then proving or disproving the thought pattern versus just jumping left and right and right and left and center and up and down..... even right now I'm trying to help a guy at work whose Honda has broken down most likely has a fuel pump or primary relay that's gone bad he had it all torn apart I told him don't touch it let me take a look at it and the idiot puts it all back together again gets to run for 20 minutes and then it doesn't work anymore I told him how do you expect me to diagnose something that works.. . Course now that it's broke again maybe I can help him tomorrow who knows

[@longfieldcommercials]

Enjoyed the video,am so pleased most cars,trucks here are stick shift,very few Tom’s to diagnose,thanks.

[@johnaclark1]

Bonus bonus bonus footage...love it! Happy 4th!

[@GraditelMacedonia]

Awesome diagnostic and effort, such a damage not finished till end and opening that box for vivisection.

[@sinegra30]

This was a excellent case study! Thank you Ivan! In this case what we do in my country is to repair the PCM by replacing the SMD component and/or burned transistor or drivers... Have a happy 4th of july!

[@paulmoffat9306]

But if it's the microprocessor, you are out of luck as they are factory programmed, and locked so they cant be replicated.

[@baxrok2.]

Amazing Pico captures Ivan. Great stuff. Thanks!

[@leefra1]

Great diagnosis Ivan, thanks!

[@additudeobx]

Wow... first time seeing this.... those are the most difficult problems to troubleshoot without a replacement swap-in for verification. Loading problems are notorious culprits. Good job troubleshooting....

[@wysetech2000]

Well done,Ivan. It pays to not give up. You and your wife have a great July 4th.

[@Paul1958R]

Ivan, Another great case study, diagnosis, and video - thank you! Happy 4th God bless Paul

[@AP9311]

Ivan, happy 4th of July to you and Amanda! Wow, PCM/TCM problem!!! Great diagnosis I would have given up on that long ago. But you're so persistence on finding that problem! 😄😄😄. Nice video!

[@luismarty1685]

Great case study Ivan.

[@charlesfiore7835]

You're a Saint with all your patience!!!!

[@lolipopdeck3694]

I do not know if you going to read this comment but 2 months a go i had the same exact problem with a grand Cherokee i checked all the wires and all came out great and got confused 🤔 today you answered me 😉

[@SmittySmithsonite]

Hope you and the family had a great Independence Day, Ivan! Great video series! Some strange stuff going on with that one. Magic box meltdown! Great troubleshooting strategy, as always. 👍👍

[@Graham_Wideman]

Ivan -- the major outstanding question: Why was the driver output oscillating? About 5V amplitude, about 17kHz. After looking at the (very disjointed) schematics on BBB, it looks like this relay (plus light bulb if you had that attached) is the major +supply load for the TCM (because all the other loads it's switching to ground). So this symptom could well be what you would get if the TCM module had a poor connection (ie: high resistance) in the plus supply line to the module. Initially on power up, you get enough current to charge the local reservoir capacitors in the module to a voltage high enough for the module's electronics to come alive. That turns on the (high side) driver for the Transmission Control relay. That causes a sharp increased current drain on the TCM, and due to (hypothesized) poor plus supply, drains the module's reservoir caps, decreasing the local V+ below the level required to keep the electronics alive. So that turns off the relay driver, decreasing the load on the local V+, allowing the input current to charge up the local reservoir caps. And so on, creating an oscillation.And poor V+ supply for the TCM pretty much matches the codes: P0882 (Low TCM power voltage) and P0884 (Intermittent TCM power).

[@focus82grothm.84]

Awesome diagnosed. The heat took the TCM i think. Great video. 😊

[@billneu9520]

Best videos on the web I always look forward to your videos THANKS FOR YOUR TIME Bill N LI NY

[@PineHollowAutoDiagnostics]

Thank you, Bill!

[@Ram14250]

I think the owner is more worried about dipping into their beer budget. Can't afford a reman'd engine controller, but that Beer post it note in the vehicle says it all.

[@fire7765]

Great job Ivan.

[@gregcromer8406]

God Bless America, Ivan, and Wifey!

[@davidgoldberg]

Good detective work!

[@HUBBABUBBADOOPYDOOP]

*Why do Car Makers continue to put sensitive electronics* *in the worst environment possible?* Under hood, in wheel wells, floorboard covered pockets, etc? It should be an ISO thing- All "PCM" encased, placed under dash, with 12v fan to cool. Your PC, MAC, laptops, etc. already do that.

[@jonathantolbert4176]

They want you to spend money!

[@InsideOfMyOwnMind]

The people who place the pcm don't know what a pcm is. The people who make the pcm have no idea that the above is true.

[@Airman..]

It's called "planned obsolescence" it is a common manufacturers practice started with the introduction of light bulb look it up

[@JamesLee-oe7mt]

All my Toyota and Lexus cars have had it inside the car somewhere

[@InsideOfMyOwnMind]

@@JamesLee-oe7mt Japanese cars that I'm aware of always did.

[@durbinmotorworks6253]

I am surprised you haven't tried running another wire from start/ run to the module as a test. I was left a little unsatisfied at the end, not knowing. Fellow Eastern European here.

[@kellyspeppers]

Back in the early 70s when I started working on medical electronics I would find many failed logic IC chips that had wave patterns like the one on that driver. That was with the first gen of TTL chips. Many times the oscillations would cause the chip to heat up and you could find the bad chip just by touching the IC. Everything was component level repairs then. Interesting case study, good entertainment for me on the 4th of July.

[@wadepatterson5079]

you are a genius sir. great video

[@Garcansdad]

Get a can of freeze spray and simulate thermal extremes. That would isolate the bad driver pretty quickly.

[@reecenewton3097]

Yes, and as a substitute for freeze spray, turn a can of computer keyboard cleaning "air" upside down and hold in that position while spraying freezing temperature.

[@Garcansdad]

@@reecenewton3097 That works too. Same principle as an air cycle machine in jet aircraft.

[@wes11bravo]

Excellent video. I have an 07 XK that has had many similarly maddening issues, so this was really interesting. I was wondering if you could have maybe used freeze spray on the TCM to see if the driver signal remained until it heated back up? Anyway, well done!

[@brianraglandsr.2349]

I had one on a bit older model that was throwing a solenoid code and some codes you had.. Long story short the tcm was faulty, but what i found was the same tcm power relay would shut down after key on cycle due to the module would go into limp mode. Swapped two solenoid pins and retested and it showed the same codes which meant the tcm was faulty not any one solenoid.But before all of that i was condemning it for it not keeping the relay powered on. Wanted to share due to i know thats not the only reason the relay will shut down. Thanks for the video and GREAT diag!!

[@gregstrakovsky5008]

Dr. Ivan! You are more scientist than mechanic. Your channel should be named PhD_AD. It`s look like You are really enjoy complicate diagnostic routines... and helping people. This crippy and crusty Chrysler`s garbage don't deserve Your valuable time and deep passion. You can shine as top paid supreme diagnostician and independent Automotive industry adviser - somewhere in Silicon valley with all Bugatti, Ferrari, Bentley and Lamborghini cars in Your Shop. Me and my friends (all former Russian Scholars and Scientist currently working for US aerospace industry) are really proud of You. We are watching Your content in our laboratory and have a deep discussion about Your debugging methodics and how it can be applicable for military equipment`s repairs and problem diagnostics in battlefield environment. !!!Молодец!!! With outstanding respect and Best Wishes Grigoriy S. MEE, MME, Phd. Raytheon Defence Solution

[@jackpatteeuw9244]

Second time watching and a flash back to 30 some years ago. There is a special type of solenoid called a "variable force" solenoid. It is used to control pressure over a certain range (like line pressure). The benefit is that the current driving the solenoid is directly proportional to the pressure. No pressure sensor is required for feed back ! The problem is, it requires a "high side" driver. Maybe this is why they are using the high side driver, but, back in my day, that solenoid could draw 1A.

[@wagoosh78]

good video shows multiple codes if a failed power driver fails but makes sense if there was a biased voltage on those other control solenoids in transmission reason those codes set

[@BoostedMoose517]

Thats a great catch! Always bothersome when you get your leads where you need them to catch the car acting up but then the car decides it wants to be "normal", Almost seems to happen everytime haha. After watching this I really need to save my pennies and get ahold of a pico! Also, I feel bad for that transmission if they keep driving it while it gets stuck in 3rd gear. I can see that causing more problems down the road. If they are already tight for money I would think it's cheaper to fix the PCM then having to replace the trans for being burned out because of not fixing PCM..

[@bigmac965]

"Double Bonus Footage". And then even more! :) I would like to have seen a confirmed fix on this, but I think you have it nailed down. Grueling diag on this one! Happy Fourth, Ivan!

[@TonyRule]

He actually got onto triple bonus footage! 24:23

[@benritchsmith]

Oh man! You went deep! The darken last bonus #2 meant you were working late and you were adamant to search out the problem..and you don’t have the satisfaction of fixing it! Augh! This is like, for me, watching a whole series on Netflix and not getting to see the last season. Well, you prolly feel the same way and have already moved on. Love your work and keep doing it. Happy 4th of July!

[@TonyRule]

Right after the longest day too! So at least 8:45pm.

[@mscuisine9307]

Very nice dear superb thanks for sharing dear

[@stuarthall2180]

Wish I knew a skilful sparks like you here in the UK.

[@throttletherapy9998]

Thought at first it might have been a bad diode in the alternator. Great diag though , love the pico , it sure answers a lot of questions

[@jeffjankiewicz5100]

This is why I love old cars..easy to fix.....idiot designers today put electronics in places where they know it will fail. When I was about your age..many moons ago...hardest adjustment was the Accel aftermarket dual point distributor to replace oem.

[@govhickenlooper]

Thank you for teaching us things.

[@PineHollowAutoDiagnostics]

haha my pleasure! Unfortunately I can't teach Dorman how to make Quality aftermarket parts!!

[@gianfrancoa]

@@PineHollowAutoDiagnostics lol

[@themechanic6117]

@@PineHollowAutoDiagnostics harsh 😂😂👍

[@alanhester9984]

Great video as usual you sure stick with it till the end to understand the total picture. I keep waiting for you to do a video on the Olds tranny rebuild. I overhauled my VW van auto tranny by reading the book and drove father on my rebuild than the original went since new. It will make a great video!

[@PineHollowAutoDiagnostics]

Hi Alan, thanks for the comment! Sure is satisfying to DIY and get great results :) I would have swapped that auto for a manual to get the most performance from a VW bus haha

[@anselmohernandez6859]

GOOD STUDY GOOD DIAGNOSIS THANKS PINE

[@nicocas2801]

Happy 4th of July. Nice video.

[@chillybrit2334]

I had to chuckle when right at the beginning you cleared the codes in the TCM, then read codes and declared.... "no codes present in the transmission control module, hmmm". If only it were that simple :D

[@RC-uw9uy]

My Jetta AHU was not canbus but when its ignition switch went wonky it caused all manner of ground and voltage issues until a new one was put in, not to mention the sheer aggravation, lol. Thank you for these videos, I have been thinking of getting a 2010 Commander to make into an offroader but the sheer magnitude of potential heartache after modules being bounced and rocked offroad gives me great pause, lol. I wonder how prevalent these types of issues are in Commanders, probably ubiquitous. Update: I was starting to get interested in hiring you to do an audit on any Commander I might get and then I saw where you lived, lol...now I must drown my depression with a sammich :).

[@josephwash109]

It makes me wonder if the PCM has a way to monitor current draw on that relay control circuit. Because this is a high-side driver, is it possible that there is an intermittent short-to ground on the relay control circuit? That would be why the PCM would shut the driver off so quickly under the shorted condition. Normally, relays use a low-side driver where the ground is supplied to the relay control circuit. In that design, if the control side to the PCM is grounded, the relay simply stays energized all the time and no damage occurs to the driver. However, on high-side drivers, a short-to-ground on the circuit will obviously burn out the driver if it occurs, so a safety method has to be employed. I'm giving Chrysler the benefit of the doubt here, assuming that they'd design a way to protect their PCMs from failure.

[@mikeyp916]

Just got to "Double Bonus Footage" I like the thought of a bad TCM, however some possibilities other than a TCM came to mind. Could be a relay with the wrong coil resistance. once the relay heats up some, the resistance will increase and all will be well. another possibility is the relay control is powered by a QDM inside the PCM and another circuit on the quad driver is overloaded causing the driver to shut off for circuit protection. curious to see if a box will fix it! edit: just got to the part where you mentioned the heat kills it. eliminates the relay theory. although on 2nd though i guess when we swapped relays that got eliminated.

[@notyourordinary1045]

That's super cool how passionate you are about your work, question for you. What should the voltage be for an o2 sensor, does it vary for import or domestic or is it relatively consistent? Thanks

[@ratbag359]

my budget fix would be to have that relay power on with the key.

[@davidjensen9821]

Man you are a beast!!

[@mrb1864]

Send the jeep junk to that guy in ovaca with the jeep hat and go have some gafa tape inovation with mrs PHAD lol . Happy holiday Ivan ...

[@billmaxfield7831]

Thanks for the killer diag Ivan. Happy 4th to you, your wife and the animals!!

[@1977jelliott]

A Mitsubishi Triton diesel on Wednesday delivered to the workshop on a trailer by a used car sales company for warranty work, the customer complaint was relayed to us that the car chugged and blew smoke on a cold startup and then the auto transmission wouldn't change gears (limp mode) and engine ABS and traction control lights were on. Did the usual of checking all the fuses etc, basics first. Scanned the vehicle and found multiple CAN comms codes on multiple modules, it took me 5 minutes to figure out that the TCM was missing from the picture. I did the same thing as you and went down the same path of chasing CAN bus faults and wasted some time in chasing a fault that wasn't there, then I went back to basics and checked for power and ground at the TCM, bingo! nada! No power at the TCM..... Only then was it that I got the power distribution wiring diagram and traced back from the TCM to find the TCM fuse was not there, missing in action, a hole where it should be, the TCM fuse had been physically removed! Although I did a sweep of all the fuses with my test light I didn't test the fuse that wasn't there, lol. Fit the fuse, hear the relay click, dash lights all out. I am still wondering why the fuse was removed..... at the end of the day I had to go back to my customer (the used car sales company) and tell them my findings and give them a bill for the diagnosis given the complaint that was presented, and, that it was between them and their customer (the buyer) to battle it out on who was going to pay the bill. At the end of the day it was @ a $500 fuse fitment!

[@staudtc91]

Its your constant wire from the battery to the starter that corroded. Happed to me and was throwing trans over temp codes. New starter and wire brush it all clean.

[@roxanneabbott8424]

Happy 4th to you and your wife, I forget her name sorry, thoroughly enjoyed this video journey!!!

[@PineHollowAutoDiagnostics]

I'll tell Amanda that! Thanks, and happy 4th of July to you too, Roxanne!

[@mikefightmaster]

Your videos are better than forensic mysteries on TV. Plus - the Fat Girls putting on girdles in the advertising they show are a real bonus...

[@freddyg9026]

I had the same code along with the other codes mentioned and found fuse 18 blown. Same exact vehicle

[@jackpatteeuw9244]

Picking a nit ... "High side" drivers (an output that sources power) in an control module are unusual (high cost, lower reliability). Any EE who is told to design a high side output would use a driver chip that has built in protection from excessive loads. It is not at all surprising that the driver shutdown when a 1A load was placed on the circuit (normal relay load is less than 250mA), so I would call that test invalid. However, you did catch the problem with just the relay as the load. I am very glad you physically inspected that ground point. It common on FCA vehicles, when many circuits use the same ground point that one or more of the wire would fail.

[@donaldroblyer7364]

My commander limp mode problem was in the shifter. It has a roller that determines which gear the trans should go in but the roller contaminates the path between the selector confusing the modules by connecting more than one gear. I disassembled the selector and took a q tip and brake kleen and cleaned between the contacts for gear selection and no more problems. May have nothing to do with this issue just something too think about and stick in the back of your mind for later.

[@jimwhite5964]

Ivan, great case study... way to hang in there and find the root cause! Thanks, and happy 4th of July!

[@caseyranger5819]

relays on back of junction box MUST be sequentially carved relays and installed at manufacture (we think its because of either relay timing or they are synced some how)and you MUST replace entire junction box not just relays. The 4.7 is trash! We have the first gen 206 5.7 limited lifted on 35's My husband downloaded the complete manufactures service and repair manual. ITS SAYS IT PLAIN AS DAY! RESEARCH IS KEY. the intermittent problem is, the relays not syncing on time sometime. or wearing out. Also my husband says. Its is either a rip off game or ignorance, that mechanics can not work on a Chrysler/jeep/DODGE so many of the parts are cross platform. They cover many years. The trick is matching features on replacement, some parts have 6-7 part numbers, due to so many displacements and features (engine size and fancy electronics) Variance depends on manufacture date, assembly plant and vin. Once you have all the info which is found on the bottom of each page of the repair manual. the repairs are a snap. my husband is an ex navy mechanic but is a salesman and has been for 13 years.

[@billyr9840]

Nice ! Happy 4th !

[@MrHammond85]

Thats some awsome diag!

[@Ivo--]

So when is Pine Hollow Horse Diagnostics gonna start?

[@jeremyanthony9300]

Hope you and your wife had a safe and happy 4th of July.

[@grgdel]

i always hear about electrical being so difficult, you make it look like jimmy playing guitar

[@EricMartinez-dg2lu]

Module for commander usually around $300 programmed without core on Ebay. Just give vin digits to confirm compatibility

[@kerryb2689]

I know I'm a year late, but this seems very similar to the problem I had 4 years ago with a 99 Dakota, but mine was with the ECM part of the PCM. Mine would just die on a hot day and I had the typical no 5v at the TPS. As close as I can figure there are problems with the 7805 +5v voltage regulators inside the PCM. There are several 7805s in the PCM, each one provides power to several sensors. Each 7805 voltage regulators can each only supply so much current before it shuts down from thermal overload. Heat (a hot day, or hot engine compartment) can exacerbate the problem. Over current could be caused by a short on a sensor or the 5v itself but the resistors on the PCM output signals should limit the current.. I suspect the 7805's are running close to their current limit (too much load/bad design??), and degrade over time with heat and thermal cycling. There are people who repair these PCM's for a fee, but that cost was more than taking a chance on a used one. I replaced my PCM with a used one from a boneyard for $100 and everything works fine (until it doesn't). The PCM program code.label must match the vehicle model. I didn't reprogram it for my VIN, but I don't have to pass emissions either. Mine got worse over time and died 2x while driving to the boneyard to pick up the replacement. It's not very fun to diagnose these types of problems when they only happen on a hot day in July-August.

[@InsideOfMyOwnMind]

I'm thinking a bad solder connection on the board at the driver transistor. You maybe could have done an Ivan fix. I've done a few on my cars.

[@JohnBrinkPhoto]

There was a recall on some of the Jeep PCMs and others have hacked them with board re-solder and cleaning pins. Somewhat pathetic that car companies can't upscale their wiring harness, plugs and connectors and components to a standard that will last at least the life of the car undercarriage. I'm currently having to disassemble the entire front end grill and headlights of a family members car just to get to some degraded loose wiring and bad grounds.

[@calholli]

Why would they make them last? That cuts into sales of your new cars on the lot. Because you would be surprised at how many people just get rid of their cars when it has an issue like this, and they just go buy a new one. A lot of people buy new cars every 2 or 3 years anyway-- so they don't really care for them to last 20 years. It's sad, but: them being built "just good enough" to work for awhile is part of the design/ classic planned obsolescence.

[@billburkart9087]

Happy 4th Ivan. Hoping you don't see any fireworks under the dash lol

[@MsFireboy2]

Great job Ivan. Have you heard of Chrysler's old ASD relay?

[@PineHollowAutoDiagnostics]

Hmm as far as I know all Chryslers have an ASD relay..

[@teddbare2000]

A little off topic... Silhouette case. (Proud owner of 2... a 93 (pasturized (sitting in the pasture)) & a 99. Both same color as yours) Found some magic stuff you may not know of or have not thought about. Add some ATP corporation AT205 Reseal polymer (maybe get it at Carquest or order it on Amazon) to the Silhouette trans fluid to soften and rejuvenate that seal in the trans causing it to not engage in cold weather. This is the closest to a magic polymer rubber rejuvenator as anything out there. Can't hurt. (Scotty)You tube mechanic claims to have gotten a letter from someone that used this stuff in his engine oil and it stopped a rear main leak in 2 days. Can't hurt to try it.

[@PineHollowAutoDiagnostics]

Yup I remember Scotty doing a video on ATP205. Never tried it, but definitely sounds like a great product!

[@mikechiodetti6737]

Hopefully all your testing proved out a bad PCM/TCM. Hope you had a great Independence Day!

[@mathiasjohani2130]

Hey Ivan, Wy didnt you do it phad style and put a separate relay in to power up the tcm relay?

[@Airman..]

I'd bypass the relay control and feed 12v to the tcm feed/output this should trigger a fault if the tcm detected voltage on the output wire while it should not (sleep mode) it's programmed that way but this should get you enough evidence to condemn the control side

[@RG-lw9uw]

Have You had the key fob stuck in the ignition and not being able to pull it out? 2009 grand cherokee laredo.

[@jkbrown5496]

Seems like whatever is cooking the PCM has put that driver circuit ride on the edge of its thermal protection. It comes on and that little bit of extra cause the thermal cut out to kick in. Off, it cools, and starts working again. May or may not be what is cooking the PCM, but one suspects that PCM is going to have more problems.

[@PaulHigginbothamSr]

What would really change Ivan is if he went through the American Marine Corp. Not a good thing but his little indecisive laugh would be GONZO. But our Marines make you into the man they want, not the person you were. He would become very decisive and maybe a wife beater or something so he probably is better with his indecisive chuckle. The only reason I mention this is how the Marines treat the GOAT during basic as an object lesson of what not to be.

[@qualityrenov]

Hey, when will you be posting a new episode of "the silhouette chronicles"? thanks in advance.