I know there have been dozens of threads about this issue across every different site relative to Dodge and/or Durangos. I have carefully and thoroughly read through all of them and attempted every single possible problem solve I could find , and yet still here my truck doth sit. Yesterday I spent hours going through the whole rigamarole of testing the crankshaft, camshaft, TPS, and IAC, by unplugging each one and testing for power at the TPS to see if anyone of them stopped me from getting the 5v reading, no dice, consistent 5v reading from both the TPS and IAC (also taken with either/or both attached and detached).


At this point I decide to throw a Hail Mary by deciding to try and reset the computer through the disconnect neg terminal, hold key to start position for 30 seconds, reattach neg terminal. With the only result from that being that suddenly my key fob no longer works.

The battery is fully charged. I have disconnected, cleaner with electrical cleaner, reconnected and examined each wire and connection pin/point/etc to the point of absolute certainty that there was no problems there. I did this to literally every single electrical connection I could possibly find, but with an even closer eye on the ones most likely to be relative to the issue. So, finally today I go and find a PCM at the junkyard, it's out of a 2000 instead of an 01 but it's 4x4.5.9 R/T, so no reason for it not to work. I get home plug it in....... SAME F$+$)&! THING, crank no start, odometer blinks four times then no bus code. Also almost forgot that last night I also did the little press the odometer reset button and turn key to on trick, giving me the expected (from what I'd read all over the web) 920 921 999 codes... Sooooo what's the next move here? The plugs to the PCM look to be in immaculate condition. If there was a problem with the PCM either as far as not matching and/or having been secured (which granted I still don't fully understand the meaning of) wouldn't SOMETHING have been different? I just bought this truck and I am really in love with it so I am pretty much determined to go to whatever extreme lengths might be necessary to figure this out, if not for the sake of keeping the truck then simply because I will without a doubt go stark raving mad with all this madness continuously turning through the gears in my head....

So whatcha got guys? What's next? The only move forward I have right now to try and make is that I have a buddy with either an 01 or 03 R/T down the road who's PCM I might be able to borrow just to see what happens there. ABSOLUTELY ANY AND ALL INFORMED IDEAS AND SUGGESTIONS ARE WELCOME AT THIS TIME.

Thanks for all the help I've already gotten in past threads and my undying praise and gratitude to anyone that manages to help me actually solve this most perplexing and monstrously frustrating of mysteries.

Nick Trash

 

A "no buss" is a lack of communication from the PCM/ECM to other things such as the body control module, instrument cluster etc.. The easy way to fix is get your hands on DRB3 scan tool($$$). With out it you are stuck with the replacing parts or checking with a VOM. You may want to check the connections on the other things that use the ccd buss.

 

If I or anyone I had direct access to had the cool couple grand to throw at a drbiii I probably wouldn't be fighting with this Durango and would be riding a lifted Rumble Bee instead lol.

I did however run into a buddy yesterday who says he has pirated versions of all the software to interface as well as the connection adapter and the files from the subscription your supposed to get to GM, Chrysler, Ford etc. on his laptop. He's a fairly adept hacker so I'm gonna go take a look at the setup anyway and decide from there if I'm comfortable plugging it in to my ****.