Chrysler Repair: How to disarm/deactivate alarm system on 94 Chrysler New Yorker, chrysler new yorker, door locks


Question
it won't disarm or turn off with the key in the doors or the trunk. I'm not sure which one it is if it is the LH or the older one. I have a picture of the LH but it looks more sporty than mine. If it is the older one, where is the module located? I am trying to do this on my own. All I have to do is unplug it. What does happen if it won't start to unplug it so it doesn't have a hard shut down?
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The text above is a follow-up to ...

-----Question-----
I locked my keys in my car. Security guard used a slim jim and got my keys out. Now my alarm is on and wont go off. I can start it up and then it dies. Can you tell me how to disarm it so it can start. I don't want it anymore more.
-----Answer-----
Hi Cathy,
You should be able to disarm the system by simply locking, then unlocking, either front door with the door key.
I need to know if you have the LH body New Yorker that first came out in '94, or the old-style body that ended that year in order to tell you about permanently deactivating it. The new body has the theft system integrated into the body computer, while the old one had a separate module. You can't easily deactivate the new one, but you can disconnect the old one, if you do it correctly. Be sure to always unplug the module with the engine running if you have the old one, or you get it into a very "hard" shut down. But I can tell you more later.
See if working the door locks (lock then unlock) with the key will disarm the alarmed situation for now.
Roland

Answer
Cathy,
I am rushed for time at the present, but here are a couple of exchanges I did with a fellow who had the older body style car. But I can't be sure about your '94, but write me tomorrow morning (I'll be available after 6 am PST)
Thanks again for your Great & Prompt response to my question!!  My son has followed the steps you suggested but our dilemma is that we can't get the car started to have the "engine running" before pulling the 21 pin plug from the module!!  Do you have any further guidance!
Thank You and Warm Smiles,
Jack
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-----Question-----
Dear Roland:
How can we disarm the security alarm on our 93 New Yorker?  It goes on at the most inconvenient times and locations and is of no value to us any more!  Thank You!!
Kind Regards,
Jack
-----Answer-----
Hi Jack,
I am assuming that your '93 is the C-body vehicle, not the LH body that started that year. In the '92 C-body, and I assume the same in the '93, the theft module was separate from the body computer so it could be removed from service. It was located above the glove box and thus required that you remove the screws around the door opening so that the box could be dropped down which reveals the module on the bracket that runs transverse above the box. It has a 21-pin "natural" color connector. Now the main precaution is to only pull the plug on the module when the ENGINE IS RUNNING. Otherwise it treats that plug pulling as if you are trying to steal the car and shuts it down even tighter than usual.
Begin by removing the lower right instrument panel silencer at the lower edge. Then remove the glove box. Then remove the three screws that hold the bracket in place to lower down the module. You may also find the remote keyless entry model in-board from the theft module. Start the engine then pull the plug.
If you have the LH body car, the module is part of the body computer and I have not seen a simple way to cut it out of the system.


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Answer
Hi Jack,
Sorry to have misunderstood that the car was presently in lock down mode. If you have tried to use the key to lock and unlock both the driver and the passenger door, then that means the wires from those two disarming switches have broken. But now that you have the module in view, the wire on pin 4 of the plug (dark green/orange) is in fact the one from the door switches. All you have to do is probe through the insulation of that wire with a pin to reach the conductor, then attach a jumper to the pin and ground the other end of the jumper to any metal surface attached to the body where is it clean and shiny, and then remove the ground connection which simulates locking and unlocking a door. That should deactivate the armed/alarmed condition. Then see if the car will start. (There should be some sort of alarm light on the dash whose condition should change when you have successfully disarmed it, I think). There is also a ground wire on pin 11 of the module (black/light green) that could be probed and used as ground point. So see if that works for you. Then unplug the module with the engine running.
Thanks for the very kind evaluation.
Roland

You may not have this option,,,so don't pull any plugs yet.