anyone have this problem?

[caleb c.]

I tow alot with a 03 4x4 dually,and lately my right turn signal comes on all by itself. Sometimes it stays on for a few seconds and sometimes its 30 mins. I just got back from the dealer and they couldn't figger' it out. They reprogramed every thing but it didn't help. They said they would contact chrysler to see if they have heard of the problem. Has anybody heard of this before?Thanks for lettin this 1st gen guy come into the 3rd gen forum!Any help would be much appreciated.

 

[gsbrockman]

Have you noticed if it makes any difference what position the tilt wheel is in, if indeed you have a tilt wheel ? Could be some pinched wiring in the column... . just a guess.

Greg

 

[caleb c.]

nothing seems to make a difference. they put a new turn sig assembly on with no results. they think its an electrical problem.

 

[rbattelle]

I'm sorry, but you have to admit that's a pretty amusing problem. Maybe your truck has reached "old age" and hence tends to leave the turn signal on for long periods of time! :-laf



But seriously, these trucks have a computer for everything. When you click the turn signal switch it sends a high-logic (+12v) signal to the front control module, which then activates the signal. Even the clicking noise you hear is simulated (ever notice how the click and the lamp blinking are at different frequencies?).



That means that somehow the computer that controls the signals is getting a +12v signal from somewhere.



What, exactly did the dealer replace? There's a turn signal stalk, and a "multi function switch", which controls all functions of the signal stalk, plus the hazard lamps switch... is that what they replaced?



Here's the scary part: an examination of the serivice manual indicates that the entire instrument cluster (EVERYTHING) runs through a multiplexer and is connected via a PCI bus to the "Front Control Module" inside the integrated power module. That means 1 wire from the instrument cluster to the front control module. Based on that fact, I believe your front control module is faulty and needs to be replaced, since there's no real wiring harness between the switch and the front module.



For those with a service manual, the relevant drawings begin on page 8W-52-2. I would love to post copies of them here, but I think that's illegal.

 

[MacHaggis]

nothing seems to make a difference. they put a new turn sig assembly on with no results. they think its an electrical problem.

That they "think" it's an electrical problem is amusing. :-laf

 

[Pawpaw]

For those with a service manual, the relevant drawings begin on page 8W-52-2. I would love to post copies of them here, but I think that's illegal.

It probably is, but the wiring diagrams for the 2004 & 2005 trucks are available here: http://www.dodge.com/bodybuilder/



I just looked in the 2004 files and saw the same diagram you're talking about. The page number hasn't changed.



Bob

 

[caleb c.]

I think it was the multi function switch. Im' takin' it in tomorow morning so I will write back and post an update when I get back for anybody interested.