Have you tried manually unlocking the hatch to reset the security
system?? My 94 grand cherokee limited did not have a key pad to turn system on/off...i have reset it by turning the key in the rear hatch lock to the left twice...see if this works. - SmokeWrench
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No it won't start if you take the security system out . Because you can't take the software out that's programmed into the PCM/ BCM ! If the PCM - engine computer does not see a key code (pass word ) It will not start the car. Besides that , hooking up the battery backwards probably did more damage then that . Fried computers etc... I have see this more then once , the vehicle's never did work right again . Damaged instrument clusters , charging systems , ignition modules etc...
Your problem if I got you well has more to do with the security system of your car. I suggest that U take it to qualified personel so they reset it for U. The anti-theft remain remains engaged, that's the one U need rectified.
are the inside of the battery terms dirty,corroided? do you know if motor alt is charging batt? how long did it run when you put new batt in? if it lasted about two days, its proubly not charging, also make sure nothing is being left on draining batt down, to check that, leave batt nuhooked pos side over night.
Try this. Lock and unlock the tail gate with the key and see if it will start. The battery must be hooked uo when this procedure is followed. Whenever the battery is disconnected, the security circuit shuts the ignition down.
When you hook up any battery, make certain that you connect the positive battery cable first and negatvie (ground) second.
I can tell you how to disable the security system, but I can't guarantee it will work again in the future... If interested, read on.
Under the rear passenger seat there is a wire harness. Look for the purple wire with the yellow tracer. Cut it and touch it to a ground point (scrape a spot down to metal somewhere nearby). This should disable the security system. If I remember correctly back to when I had the same problem with my 94 Grand, I actually crimped an electrical connector to the end of the wire and attached it to ground permanently with a screw. I had no security system, but I could drive my Jeep!
there are two buttons on the diagram panel screen, push and hold top button and a one of the entries will start to blink, then you use the bottom button to change the entry, when you are ready to move to the next entry push the top button again.
greetings: the reason your veh will not run is because the security system has been activated. it will allow you to start it but the security system kills the motor so the veh can not be driven off if in fact it was being stolen. if you have the remote control, lock the veh and then unlock it. this will shut the security system down and return your veh to normal and it should start and run normal. i have a 93 and 94 both worked this way. using the key to lock and unlock to shut the system did not work for me but the remote did the job.also anytime the batt cable is removed, the security system will activate when you put the batt cable back on. then you have to do what i described above on mine to deactivate the security system. the manual says use the key to deactivate the system but that does not work on mine. i hope this helps have a great day wayne