jadocs
Senior Member
- Joined
- Mar 23, 2014
- Posts
- 689
- Reaction score
- 140
- Ram Year
- 2014
- Engine
- 6.7
How do you test if you don't have a trailer? I'd like to check mine out.
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Buy a 7pin plug and keep the receipt. Plug it in half way, chk the voltage to each lead and return for refund. OR... go rent a travel trailer, take yer lady out for the weekend and have fun with the experiment.How do you test if you don't have a trailer? I'd like to check mine out.
Any news from the Great and Powerful Stealership?Amen!
That is the question I'm trying to get answered, my 3500 is at the dealer now, should have it back with answers Monday.
I don't know if it is a faulty ITBM or a software calibration issues. I don't even know if all 2015s have the issue but I know I'm not the only one with this issue.
My biggest concern is they are going to tell me nothing is wrong and it is working as designed, the default babble when they don't know how to diagnose an issue.
I posted scope shots of the trailer brake line (in the cummins forum thread), one with a working ITBM and my 2015 tow vehicle, the scope shots clearly show my 2015 is only outputting 63% power to the trailer brakes.
Brake slider all the way pushed (100%), 100% output from ITBM 12.6 amps measured on the trailer brake wire.
Brake slider all the way pushed (100%), 63% output from ITBM 6.1 amps measured on the trailer brake wire.
Any news from the Great and Powerful Stealership?
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Which dealer has you truck?The dealer still has my truck, one week as of yesterday morning. I don't think they know how to troubleshoot the issue. The ITBM isn't that complicated and it shouldn't take more than two days to troubleshoot and fix. It only took me two hours to discover the low output issue after 60%.
I'm not really sure where to go from here, I want what I paid for to work. Just in case, I order the Prodigy P2 cable for the 2015 RAM. I can use the P2 for my upcoming vacation to mange the fiver's brakes.
Which dealer has you truck?
I've never dealt with them, apparently I'm going to keep it that way...Southfield Chrysler
I've never dealt with them, apparently I'm going to keep it that way...
I also bought my truck from clio and while it was the best buying experience I've ever had their service department is the worst I've ever had. I also don't care for milosh because the only service writer who actually cared is no longer there. I've heard good things about golling's service department but I've never been there. At least they are trying to help you, most dealers put the standard no problem found and ship it.I've been to Wise in Clio (my selling dealer) and they did not have the ability to diagnose it (no device to emulate connected trailer brakes). They called the dealer in Frankenmuth and they didn't either. I've had horrible past service experiences with both Orchard in Romeo and Miloush in Auburn Hills so I didn't even bother with them.
The root problem is Chrylser doesn't publish diagnostics or have STAR line support for the dealers for many sub-systems. The last update I got from Southfield was they were trying to find descriptions of how the ITBM was designed to work. At least Southfiled is trying to find a solution. They were truly concern when I told them I couldn't stop for a fast changing traffic light.
If this doesn't end soon, Chrysler will be looking at a buy-back. Michigan lemon law is 30 days in service with in the first year, I'm already half way there with no solution is sight.
Do you have a dealer suggestion?
I have a 2015 2500 (2k miles) and experience the same problem with the factory brake controller towing either of my two bumper pull trailers . A 12k 4 wheel brake toyhauler and a flatbed 20' utility trailer. I set it to heavy electric on both and the gain is set at 10. Just dosent work correctly (IMHO).
It gives me the same result as my f150 with the gain set at 4 . It is going to the dealer this week.
Ho-ly ****.Dealer update.
The dealer told me today that Chrysler has nothing published on how the ITBM works or how to diagnose it. The only written documentation is what is in the owners’ manual. I’ve been in the automotive business a long time and never heard anything like this.
Tomorrow the tech is going to hook up a blower motor to my brake line output per Chrysler’s instructions. I asked the dealer what this was going to prove and he didn’t know. I asked how will you know if there is a problem if you do not first characterize the blower motor so you know what to expect. They didn’t have an answer outside of following what Chrysler is telling them to do.
I told them it would be more conclusive if they simply attached an inductive load on the brake line and measured the duty cycle on the brake line. They told me that Chrysler would have to tell them to do that.
I’m mystified, I’ve never seen anything like this before, this isn’t diagnostics. How can Chrysler be so irresponsible not to have published diagnostics for a module involve in safety (rhetorical). I give a lot of credit to the dealer and the service tech for sticking it out. Most dealers would have delivered babble long ago that it is working as designed. Stay tuned.