95 jeep grand cherokee lock system
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=109204
Printed Date: May 15, 2025 at 12:02 PM
Topic: 95 jeep grand cherokee lock system
Posted By: thejetmolina
Subject: 95 jeep grand cherokee lock system
Date Posted: November 24, 2008 at 2:41 PM
i have a 95 grand cherokee 4.0 and i would like to know what type of lock system weather its central or reverse polarity etc. Because on my alarm the doors will lock but they will not unlock with the remote.
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Beep Beep who got the keys to the Jeep
Replies:
Posted By: ckeeler
Date Posted: November 24, 2008 at 4:41 PM
It uses a positive trigger relay driven system.
Posted By: thejetmolina
Date Posted: November 25, 2008 at 12:33 PM
I have it connected from the alarm one wire to lock trigger the other to a 12volt source and for unlock one wire to trigger and the other to a 12volt source but yet the remote will not unlock the doors. could there be another problem? the power lock and unlock works fine in the car ------------- Beep Beep who got the keys to the Jeep
Posted By: ckeeler
Date Posted: November 25, 2008 at 12:40 PM
thejetmolina wrote:
I have it connected from the alarm one wire to lock trigger the other to a 12volt source and for unlock one wire to trigger and the other to a 12volt source but yet the remote will not unlock the doors. could there be another problem? the power lock and unlock works fine in the car
i dont understand what you are saying. can you draw a picture of how you have things hooked up?
Posted By: thejetmolina
Date Posted: November 26, 2008 at 11:22 AM
its a phonics digital alarm pd-175 for the locks its 2 wires for each lock i dont have the diagram in front of me but i beleive its for door lock it white wire to trigger and yellow to 12v and for unlock its WHITE/ black to trigger and yellow/black to 12v thats how i have it wired the lock works fine i tapped into the trigger behind the door panel in the lock swith i did the same with unlock but it didnt work now i have the unlock tapped into the trigger in the passenger kick panel like it says in the tech sheet but still nothing
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Beep Beep who got the keys to the Jeep
Posted By: ckeeler
Date Posted: November 26, 2008 at 11:41 AM
what color wire are you using for unlock? have you yested it with a DMM?
Posted By: thejetmolina
Date Posted: November 26, 2008 at 1:03 PM
the unlock is a pink/purple no i didnt test it wut setting on the multimeter would i have to use the 12v? red to pink/purple and black to ground?
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Beep Beep who got the keys to the Jeep
Posted By: ckeeler
Date Posted: November 26, 2008 at 2:09 PM
Yep, that how you would test it. i would test it just to be sure its the right wire you are trying to interface with.
Posted By: thejetmolina
Date Posted: November 26, 2008 at 2:55 PM
thank you for ur help i will check next time i can i appreciate it very much
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Beep Beep who got the keys to the Jeep
Posted By: audiovibe-mike
Date Posted: November 26, 2008 at 3:09 PM
the jeep cherokee uses a very strange door lock setup. im gonna look some stuff up but i know the last one i did required 2 DLS relay packs. so 4 relays in total. i believe it is a dual reversal rest at ground. ill post back soon. I just remember the last one i did used alot of relays. lol
Posted By: audiovibe-mike
Date Posted: November 26, 2008 at 3:15 PM
ok ive got it here now sorry about the double post i am new around here. 96-97 has an in vehicle multiplexing system. IVMS. there are a driver and passenger door lock module. Basically 1 DLS will control the drivers door in a reversal rest at ground system and the passenger door controls all other doors(also reversal ground at rest), but not the driver. Im gonna tell you right now your gonna have fun with this one, but dont give up youll get it. You WILL have to cut both the unlock and lock wires from BOTH door modules. Oh and heres the worst part..... BOTH door panels need to be removed as the modules are at the switches in the door. its way to complicated to write out everything on here but PM me after you get goin and ill help you out.
Posted By: audiovibe-mike
Date Posted: November 26, 2008 at 3:18 PM
sorry for the extra post but. if you look at the date of birth inside the driver door jamb you'll see that you have a 96 jeep, or close enough to it that it has the IVMM system. side note...... i hate it when these come in the shop, i always give myself and extra half hour for these beasts.lol
Posted By: howie ll
Date Posted: November 27, 2008 at 10:57 AM
Test thepoint where you've joined to see that you have the correct wire, test your unit's output to see it's delivering what's required, that 4 relay jobbie, only ever seen that on London Taxis where both sides of the MOTOR wires sit at open circuit at rest, thus to lock, you feed the one motor wire with 12V+ and send the other side to ground, revefrsing this for unlock. That's the front doord, the backs are switched neg.
Posted By: ckeeler
Date Posted: November 27, 2008 at 11:49 AM
I've seen it twice now Howie, both times on new Superduty Fords. And I haven't seen them all that way either. but never on a jeep, nope never. all those jeeps have audiovibe-mike, if that is the lock system he has is a 5 wire system that has to be done in each front door, theres not going to be a reversal rest at open on this one.
Posted By: thejetmolina
Date Posted: December 14, 2008 at 5:44 PM
i got the chance to test the unlock wire which is pink/purple and when i press the unlock switch the multimeter reads 12v but it also reads12v when i press lock while testing the same pink/purple wire so where does the unlock signal actually come from? there is a 3rd wire coming out of the back of the lock/unlock switch is there any idea what that wire does ------------- Beep Beep who got the keys to the Jeep
Posted By: chriswallace187
Date Posted: December 15, 2008 at 1:45 AM
I hope I can cut through a bit of confusion here.
'96-'98 and '99-'04 Grand Cherokees use door modules and data communication to operate the doorlocks. The motor wires for the driver's door go from the driver's door module to the actuator, and the motor wires for all other doors go to the passenger door module.
These models require either the aforementioned relays interfaced inside the front doors, with the motor leads, or data modules such as DEI's 455T and 455J in order to be controlled by an aftermarket unit with keyless entry.
'93-'95 Grand Cherokees, by every reference I've ever read, are positive relay trigger only. No data module is necessary and if the aftermarket unit has positive door lock/unlock outputs the wires can be connected directly to the wires on the vehicle without the use of relays. Since thejetmolina has got lock(but not unlock) working with a direct connection, that means emphatically that this is not a '96 model and not a 5W rest-at-ground system.
What you should do next:
- Meter again the pink/purple wire at the switch or wherever you have it, and verify that it shows 12V when the switch is held to "unlock".
- Apply 12 volts to that wire(you can get it from the ignition switch or the battery, through a 5 amp fuse. If the fuse blows, I'm wrong and it's a 5-wire rest-at-ground system. If the doors unlock, go to the next step. If they don't unlock, but the switch is working, then you didn't apply 12V or something else is really screwed up.
- Disconnect the alarm's (+) unlock wire from anything whatsoever on the car. Meter that wire, while pressing "unlock" on the aftermarket remote. It should show 12V. If it doesn't, the module is bad.
If you get through all that without solving your problem, post back again and we'll try some more. ------------- C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: thejetmolina
Date Posted: December 19, 2008 at 12:38 PM
there has to be a problem with the alarm module cause the unlocks work with the door switch and gets 12 volts with the tester just when i press unlock on the alarm there is no signal at all ill get another alarm and see wut happens if not i could always bring it back thanks for ur help
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Beep Beep who got the keys to the Jeep
Posted By: howie ll
Date Posted: December 19, 2008 at 1:03 PM
Of course you could have done the obvious right at the start and checked the lock/unlock outputs from the module.
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