[CTMRengineer]

I think it might be the security system, as the light flashes when the truck starts. When I start the truck, it'll run for a few seconds and shut off. I've tried multiple ways of resetting the security system that I've found in the service manual, this forum, a ram forum, and a dodge forum. If I disconnect the key receiver it won't start at all. It'll just crank.

Is it typical for the security system to lock you out of the obd port, or is it more likely that the tipm is malfunctioning? Has anyone encountered this before?

 

[2001 Hypertech Cummins]

What year is the truck?

 

[CTMRengineer]

What year is the truck?

2006. I just had a key made for it. The locksmith was able to access the can. It shows 6 keys currently stored. On either of my scanners I'm unable to access it. No change as far as starting and shutting down.

 

[rghavana]

How did locksmith access?
what scanners are you using ?
Look in FSM for troubleshooting no communications
Try and make sure good power/grounds to TIPM
good power/grounds to cluster
2006 cluster known for issues check it for obvious ones ie solder issues

 

[CTMRengineer]

How did locksmith access?
what scanners are you using ?
Look in FSM for troubleshooting no communications
Try and make sure good power/grounds to TIPM
good power/grounds to cluster
2006 cluster known for issues check it for obvious ones ie solder issues

I'm not sure what the locksmith was using. He was kind of a douchebag. He said he wasn't comfortable talking to me because I had a knife on my belt. It's a 2.5 inch knife...
The fsm, even for losing communication with tipm, says read codes lol. I did a cluster test which does a gauge sweep and that seemed fine. Then I did one to the overhead unit and that said it passes the can test as well.

I was using my edge and a little unit from Amazon. I was able to read my gf's nitro so it was fine. I hit every connector I could find with contact cleaner and reseated it. I later found that I could access the can when the truck would start for a few seconds. The only code I could get was intermittent connection to pcm. It was p2509. Since I couldn't access the can other than when the truck was running, I couldn't clear that. I also showed 2.5v on the can pins for the obd.

I threw the truck on the battery charger overnight, had two shitty starts, then it ran. I don't get it. Why would it start but not let me read the can unless it was running? Typically it's the other way around if it's a battery issue.

I took it to dodge because they supposedly had a mechanic that was really popular among diesel guys in the area. He said bad tipm and fuel pump. That doesn't make sense to me because I have a fass which isn't even interacting with the can, and bypasses the fuel pump in the tank.

Could it just be a weird battery issue? Am I missing something or overlooking something?

 

[rghavana]

Got to find fix P2509 can cause all kinds of issues
If you charged batteries and it ran should start there
running these trucks on low/bad power can disrupt communications and damage modules
If Fass is installed properly it still should be controlled by ECM

 

[Alcharger]

Last weekend I programed two keys for my 06 using AlfaOBD. I had to get a 4 digit code from another app, Pull Pin for $15. I had killed my spare key when I removed the SD card from my MMX and tried starting it. Not sure why.

BEFORE I programed the new keys, they would start the truck for a few seconds and shut off. This is normal.

When I finished the small red light was on at the bottom, left of the dash. Somehow I activated the Stolen Truck code. There are several ways to fix this. I did the unlock the door with the key and cycle the ignition 2xs method.

I don't think the locksmith programed your keys or killed them. The above method with AlphOBD app worked like a charm.

AlfaOBD is worth every $ to program and run diagnostic tests and much more.

2006 Who Can Provide 4 digit Code to Program a Key