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I had to repeat the unlock and lock a few times to each lock ... but what I found out was my 2 back passenger doors were NOT locking so be sure they all are locked before going around with your key... hope this helps... I have had no problems since
The security alarm system on the 1994 Jeep Cherokee arms itself on any normal exit from the vehicle, i.e. ignition off, open door, lock door with power door locks, close door. If the doors are locked with the key, it does not arm. If the battery is disconnected, then reconnected, the alarm system will go into powerup alarm mode. The lights will flash, but the horn will not blow. The alarms can be disarmed by a keyless vehicle remote or by unlocking either of the front doors or the read lift gate with the key. If the key method does not work with any of those three entrances, there is a problem either with the input to the alarm module or the module itself. There is a switch in both front doors and the tailgate which is activated by manualy unlocking those doors. The alarms can be disabled by permanently grounding the wire going from either of those switches to the alarm module, but this will remove all theft protection. The best thing to do is to find out why the system is going off in the first place. It could just be a glitch, a loose connection that can be fixed fairly easily and keep your theft protection intact.
Check the switch contacts on your doors, and in the door locks. Might be a door switch that has a short in it causing the alarm to go off. There is a diagnostic mode you can run to check the door switches and the alarm triggers. Disabling the timed dome light relay will help you a lot, as you will have to wait till the lights shut off before you try another contact. Check out this website on about.com. It will show you how to run the test on the contacts and switches in the alarm system module:
The ignition security on/off is located at the trunk lock. unlock and lock rear gate and the alarm will turn off. My jeep sat in my drive for a month before a jeep tech told me this. It still triggers the security sometimes when I unlock the passenger door with the key and I go straight to the rear gate lock and it shuts off instantly.