Thanks for watching and commenting .. I think these types of issues will be more common as time goes on.

Ok so I have to tell you, this vehicle never left the shop, the battery went dead over the weekend (may be the root cause of the issue) and was logic locked again, this time worse than the 1st time. I have footage that I will be sharing soon.. All the fingers are pointing to the ecm but the problem is intermittent.

​​​@@BrianMann216my 2015 Cherokee Latitude has a gut punching hard shift "clunk" from park to reverse and, into drive now- EVERY time I have dared try to try it.. It started immediately after battery was replaced last week. I've not figured it out yet but am leaning towards a loose ground and /or a communicative issue because -while running in park, I went into settings_ "service brakes" and tried to engage that operation. It said it "could not perform operation because vehicle needs to be in park or neutral". It was in park. So🤷‍♀️ I called a local Jeep dealership to schedule an overdue PLGM recall appt. and the Service Manager answered the call. I briefly told him of the "trans clunk" / new battery switch out, and he told me OVER the PHONE that I most definitely needed a tranny! I asked him (calmly) "You got THAT? Already? (he said yes), From my one sentence?" (he said yes).... 🤯 My Jeep has 191,000 miles on it and it's been well maintained but anything can happen, I know, but, I was immediately disgusted & in shock ŷwith his unprofessional premature tranny pitch and said I'd have to call him back on that😦. Then,, I told him I have been car-less for a week now and I am widowed , retired, and money is an issue for me but,,, I know a little more than the average bear because I had done my recall research before I called and knew about the possibilities of warranty covering the many Jeep reprograms, TSB's, Recalls & recalb's, DTC's etc. Etc. and that I also knew protocols are in place, to first duplicate, then determine diagnosis because I worked as a GM Service advisor and Executive Secretary to the Service Dept. Manager back in the 90's and I worked for both parts and service simultaneously. He tried to backpedal a little but I declined to entertain the conversation any further. HELP?

Thanks for watching.. this was a interesting one for sure.

Thanks for watching & commenting

Wow, all locked up.. I get many calls when the red release is pulled..

@@BrianMann216 it sometimes trips a light that usually clears for me. What else do you see happening?

I don't have thinktool

I got the topdon to fill in where my autel may miss. OE tools are the way to go if you can, however that is not the option for many. I am very aware of the holes in all aftermarket tools from the position that I held at my last "job". the R&D team did comparisons with all hte major aftermarket tools on vehicles 2-3 years old at the time.... Every Aftermarket tool has modules that did not populate or miss codes that the OE tool would pull. The majority of the time a aftermarket tool can get you codes and some Bi directional control.. in this instance I think I had to use the wi tech for the programming and the proxi alignments.. Thanks for watching and commenting.

Let us know what happens!

It sometimes wouldn't at all, and sometimes baclight would stay on.

Topology on top do. Is by network and Is only good for knowing wich network modules are on.. ultra does a better job from what I have seen as far as the actual location of modules. Witech does great job. You have to look at a network diagram with topdon for sure if you are dealing with comm issues

@Hands On Auto Training ok good to know. Thanks again

Scan tool topology layouts are not true layouts with series and parallel connections, even a small number of schematics get it wrong. Scan tool layouts will not help you to find a break in the harness where several offline modules are affected. I admit it is very nice to look at and interact with.

@Duane Donaldson got cha! Yeah it would sure be nice if someday that would change. Just really interested in seeing live (real-time) activity or communication on that mapping.

@@duanedonaldson2262 the witech has done a good job showing true layout, I have not found it to show the network improperly. The topdon just breaks it down into the proper networks by protocol, but no rhyme or reason for the location of the modules.

What codes arr all the modules setting?

Hello sir am a mechanic wish to learn some stuffs from you please can I get your email or Whatsapp number

I told them that there could be a bad PCM. My gut says that it was a logic lock, properly a battery that low, and as the vehicle was turned on the voltage went to low as the modules were communicating. They said the customer changed the battery because it would not start. SO... It appears the battery was dead or very low.. This shop did not do much to the vehicle besides check fuses and codes. This is good. I can tell you from my experiences this type of situation could have cost the customer thousands in parts at the techs guessing ..