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Followup To Hi Roland; Vehicle will not stay runningfor more than 10 seconds.
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Yes we did pull the 21 pin plugin the ten second run time and it will still not start -------------------------
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Followup To The Anti-Theft light blinks all the time, will not reset vehicle will start for about 10 second then shuts down. Have tried the procedure recomeneded by Identifix to reset alarm but does not work, have tried to unlock drivers then passangers door w/key still will not come out of theft mode.
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We tryed the following and it did not work. Any thing else We can do?
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Followup To
Question -
I cant get the anti-theft system to stop shutting the fuel system down. Can you bypass the system on a 1990 Chysler new yorker 3.3l
Answer -
Hi Dave,
My experience with the security system in these cars is based only on my reading of the Chrysler shop manuals. I have the '89 and the '91 manuals but they are basically identical. To bypass the system you need to disconnect the plug to the theft module. One very important procedure, once you get to the module, is to always start the engine and have it running when you pull the plug, otherwise it will treat your effort as if you are a thief and shut down the engine again!
The module is located above the glove box. To get to it, the manual speaks of removing a silencer panel below the glove box so as to gain access to the box attachement screws and have a space to remove the box from the panel.
Once you have box out of the way you should see a bracket above the box opening that may contain 2 or 3 modules. The theft module has a single 21-pin plug, while the lamp outage module has a 5- and 13-pin plug, and the keyless entry module has 2 8-pin plugs. You may have to remove one or two of the other modules to get to the theft module, or you may have to remove the bracket to get at all three of them. But in any case, once you find a module with a 21-pin natural connector that is the theft module. Just start the engine and pull the plug and that should solve your problem.
I just recently purchased a troubleshooting manual for this system on eBay and when it arrives I should be able to give you more suggestions on figuring out how to solve the false alarms and restore the system to function. I have gotten about one question a week about this kind of problem so I figured I would learn more about it so as to give better advice.
Roland
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Hi Dave,
If you have disconnected the anti-theft system then I believe that the shutdown is not related to it but to the engine control system as a whole. Are you really saying that you have a "no start" situation or a "shutdown when driving" for no apparent reason? If that is the case then we have a number of possibilities. Tell me more about exactly what you are experiencing, and tell me if you believe the problem has anything to do with the anti-theft system and why you believe that is the case. There are a number of things to check for the 'no start' situation but let's verify that is what you are asking about.
Roland
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Hi Dave,
I may have misunderstood you when you said "we tried the following" when I thought that you meant that you had tried to disconnect the theft module to no avail. Right now I am away from my manuals until tomorrow so I can't see if there is another way to solve your problem. I suspect that there is a problem with one of the theft sensors or maybe with the electronics of the module proper. The manuals show how the system is assembled and has a few trouble shooting procedures. I should get the much more detailed manual dedicated to the anti-theft system this week. But if you need to get the car back on the road quickly, I would suggest that you disconnect the module's plug as I described, which should defeat the system entirely. Then when I get the manual I'll see if I can give you better suggestions, and even before that I'll look at the rather brief section in the shop manual to see if there is something I can suggest that you try.
So if you want to get on the road, just gain access to the module by removing the glove box and when you find it start the engine and during the 10 seconds that it runs, pull the 21-pin plug. You may have to dismount the module from its pracket, or remove the bracket, to get at the plug easily. Ideally is should not shut down (unless it is for-ordained to do so, and then the only way to get it disabled is to pull the plug when is hasn't entered into the 10 second shut down mode. Does it always do that now, or will it occasionally let you drive it? If it sometimes behaves normally, then wait until one of those occasions and then pull the plug while it is running. In any case, I understand your situation and I'll get back to you tommorow evening.
Roland
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Hi Dave,
Still away from my manuals, but hoping when I get back this afternoon I'll find I have the full trouble shooting one. I have onllllly one question: when you pulled the plug and it still wouldn't start, did the theft alarm light still work? I'm just wondering if it is at all possible that it is something with the standeard no start issue (like the autoshutdown relay, etc.) or if indeed it is the anti theft system that has got you looked out of action. Again may ask, does it ever self correct just once, at which time if you were running normally that is the time when if you pulled the 21 -pin the manual says you can do so and disable the sytem. But I'll get back to you when I am home again.
AnswerHi Dave,
I now have found for the '91 theft system that the arm sense wire is yellow in color. So look for that color wire on the 21-pin plug, and then test the voltage as I described, if it is there; I am not sure if the go/no go is at 1.0 or 1.5 volts, but let me know what you read if there is a yellow wire in your '90.
Roland
