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Thread: Disarm Alarm (YES I HAVE DONE A SEARCH)

  1. #1
    Registered AGRAVADR's Avatar
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    Default Disarm Alarm (YES I HAVE DONE A SEARCH)

    '94 ZJ

    OK, so this stupid F@#$%& alarm has pushed me too far.

    Key Fob is gone. Alarm switches on tailgate, and front doors are probably arming. My alarm is NOT sounding, but when i start the jeep, since there are faults on some doors, it cuts power once the engine fires up.

    I cant get the jeep running so i cant pull the alarm module.

    I have read about the purple/yellow wire, but it is my understanding that if i ground it when the alarm is armed, it will not work. Before i go and do ground the purple/yellow wire, will it be a waste of time until i can magically get my jeep started?

    if so, i have an 94 impeccable v8 zj for sale.

    Please advise...
    '94 ZJ Sold

  2. #2
    Registered ryan86jeep's Avatar
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    did you try unlocking the rear hatch with the key?


    if that didnt do it


    get in the jeep
    roll the window down
    lock all the doors from the drivers side switch
    reach out of window
    and unlock the door with the key
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  3. #3
    Registered AGRAVADR's Avatar
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    tried all the unlocking tricks. cant auto lock because my chime module went out and with it went power locks. still have power unlock though..
    '94 ZJ Sold

  4. #4
    Registered ryan86jeep's Avatar
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    i dont think the chime module runs power to the locks

    as all the switch does for lock and unlock is reverse the polarity
    so if you have 1, you should have the other

    have you checked your DS door jam for any broken wires in the harness?
    this would prevent a locking from working if a wire was busted
    ....................................
    86' Cherokee.. 2.8L..3" lift, 256,000 miles original trans motor rears tc...~Electric fan...
    ~Custom Switch panel on glovebox..~Custom overhead console..~Rear auxilary lights..

    94' Grand Cherokee (DD)5.2L V8~242~Preformance ECU~Custom TurboCity Dual Intake W/ K&N Filters
    ~ML Headers~Custom Made Dynomax 3" Header-Back Exhaust
    ~3.5" RE~32's~5.9 E-Fan~UberRare Red 5.9hood :happpyd:
    ~RE adj. front trac bar~Rear Tire Carier~Remote Start~MX6 Shocks
    Soundclip of my Exhaust (right click and save as)

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  5. #5
    Registered AGRAVADR's Avatar
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    all the wires are fine, checked them too. why my power locking ability went out and my unlocking is still there i guess is a chrysler mystery.
    '94 ZJ Sold

  6. #6

    Default Here Ya Go.

    http://www.jeepsunlimited.com/forums...d.php?t=857145

    Also the alarm being bypassed was not the reason my battery was running dead.
    It was just a bad battery.
    93 5.2 Limited W/Bum Tranny

  7. #7
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    If you get a Haynes or Chilton manual, there will be an electrical diagram with the exact location of the wire that needs to be cut. You can also install a switch, so that you can arm the alarm at a later point. I believe the wire can be accessed on the driver's side (bottom left).
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    Why not just get another FOB...our local U-Pull-It has a bowl of various FOBs on the counter at the register for 5 bucks each. Maybe you have something silmilar in your area

  9. #9

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    The chime module provides the ground path for the coil side of the lock relay. The reason for this is that the chime module is already wired to the door ajar switch and the key-in ignition switches, so it was a simple way to add the door lock inhibit feature to try and prevent you from locking the keys in the car. If the door is opened and the keys are still in the ignition, the chime module cuts ground to the door lock relay. If the chime module is missing, the lock relay won't work, either using the switch on the door, or using a remote fob. You can fix this by grounding that terminal on the plug for the chime module.

    As for the disarm switches, one way to verify their operation is to close all doors (doesn't matter if they are locked or unlocked) and wait for the interior lights to time out. Put your key in either front door or liftgate lock cylinder and turn to the unlock position. If the interior lights come on, the switch is working and that should have disarmed the alarm module, allowing the engine to run.

    BTW, the lock cylinder switches only serve to disarm the alarm, there is no "arm" output from them.

  10. #10
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    On my 94 I am having issues as well with the vehicle theft features and the Keyless entry receiver. I replaced the receiver today, keyfob works fine for locking/unlocking now. No horn sounding when arming or dearming though. Lights dim to off after closing any of the doors. Lights will come on when the rear hatch is unlocked but not with the front doors. Alarm will still trip when trying to gain access via the front doors. Looking at the VTA module next along with the VTA relay.

    Agravadr, when you unlock the front doors or hatch with the key do the interior lights come on? I was down to the rear hatch being my only access without tripping the alarm.

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  11. #11

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    on the zj take off door panel and put a jumper wire between the two wires on the back of the lock cylinder. this will disable the alarm as long as the jumper is in place. you only have to do one lock, any door will work

  12. #12
    Registered riley3d's Avatar
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    Icon928

    I tried cutting and grounding the purple/yellow wire, did not solve it. So I put it back. Then I tried the jumper in the DS door, did not kill the alarm either. I am also trying to find the instructions on how to disable the auto lock feature that locks your doors at 15mph. Nothing for the ZJ model online, so far, manual says take it to dealer, my neighborhood dealer closed. Good news, i have it running great, it passed CA smog and gets 20 mpg with 150k on it.
    1997 Jeep Grand Cherokee Laredo 4.0, 4x4 (151k)
    2003 KLR 650

  13. #13
    check my fquick
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    Did you GROUND the purple/yellow wire and try that?
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    there is a wire in the drivers door boot that you can put ground to which will disable the factory alarm. I had a guy tow his ZJ to my shop and had me put a viper keyless in to try to disable the factory alarm, it worked but i had to use a relay to send a good ground to this wire. Its set up for negative pulse. If I recall correctly the wire was either purple with yellow strip or pink with purple stripe
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  15. #15
    Registered TristanB's Avatar
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    lol i missed reading the post immediately before me
    1997 Grand Cherokee Laredo 4.0, 2WD, all stock no cat, 234k
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  16. #16

    Default 1994 Jeep Grand Cherokee Alarm Wiring

    1994 Jeep Grand Cherokee Alarm:

    Constant 12V+ Red/White Ignition Switch Harness
    Starter Yellow/Blue Ignition Switch Harness
    Ignition Blue/Gray Ignition Switch Harness
    Accessory Orange/Black Ignition Switch Harness
    Tach Gray/White Coil
    Brake Switch White Brake Switch
    Trunk Pin n/a Works with Dome Light
    Parking Lights Blue/Red Left of Steering Column
    Head Lamp Tan/Black Light Switch
    Hood Pin n/a
    Factory Disarm Purple/Yellow (-) Driver's Kick Panel Black Connector
    Door Trigger Yellow (-) Driver's Kick Panel
    Door Lock Orange/Purple Driver's Kick Panel Black Connector
    Door Unlock Pink/Purple Positive Trigger
    Horn Wire Gray/Orange (-) Steering Column
    Windows Up LF=Light Blue, RF=Brown/Purple
    Windows Down LF=White, RF=Purple

    As a few said, if you tie the Purple / Yellow wire in the drivers kick panel to ground it will disable the factory alarm.

    If you just cut it, it will not work. You need to make sure its a good ground, you can check with a DVM or a test light.

    I wish you good luck!

  17. #17
    Registered TristanB's Avatar
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    You could put in a small spring switch, to deactivate the alrm upon getting in, put one side of the switch to purple/yellow and the other side to a good ground.

    I DO NOT recommend the use of a test light, a DMM is always the best way to go.
    1997 Grand Cherokee Laredo 4.0, 2WD, all stock no cat, 234k
    Advanced Certified MECP Installer

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  18. #18
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    Remove the glovebox floor. With the engine RUNNING, disconnect the alarm module. This will disable all alarm functions and keep the ECU from initiating the ignition kill function of the alarm system as well. Remember the engine must be running. If you do it with the engine off, the ignition kill feature in the ECU will still activate.

    http://www.jeepsunlimited.com/forums...t=alarm+module
    Last edited by Rocky; 05-03-2010 at 04:23 PM.

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