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Old 03-11-2012, 08:41 AM   #1
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06 Rubicon axle lockers

2006 Rubicon axle lock idiot lights flashing. Lockers are engaged as I jacked up front and tried turning the wheels and they do not. The same on the rear. I've checked the air pumps and both come on and go off after engagement, checked air connections at axles, no leaks and when removed the pumps kick on. Axle sensors I've reseated the connections and jumpered the plug with no change on the indicators so the sensors appear fine. Being as both front and rear are flashing I changed the switch (@ $80) no change. Swapped relays even though pumps are working no change! Next step is to trace the signal wires from the sensors back to the emic or PCM ain't sure where they go yet.

Now two things occurred since I've last used the lockers and the lights worked. I put in a 2" bb (that's why I thought maybe the sensor harness or air lines at the axles) and the ignition actuator pin plastic POS broke and the ignition was stuck in the on position. I pulled the battery cables over night so it wouldn't drain.

I'm thinking the ignition problem caused this probably. I've read that the way the dog clutches operate you don't want to run it partially engaged is the design that different from an ARB that doesn't have engage sensors?

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Old 03-11-2012, 02:32 PM   #2
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You are right, most likely pulled the connector or damaged the wires. I think the switch is closed when the locker is engaged so jumping the connector at the switch with no change tells me that there is an open to ground. Test the black wire at the switch connector of both to see if they are grounded. I donít think they go through any connectors to get to their ground point which is at the back of the engine along with a bunch of other things. Then you have the other wire(s) that are violet/white. They go through 2 connectors on their way to the cluster. One is in the left kick panel (white) so I doubt it is there. The other connector (gray) is behind the engine & has 14 wires in it. Since the locker pumps work the whole connector is not separated but it likely is there or from there to the switch. Iím guessing that even if you lock only the rear (one click) the light still flashes. If so I would think the rear locker wire(s) is/are to blame & they must run under the tub to the rear. As I understand it as long as the rear doesnít engage (stop blinking) it wonít look to the front. Hope this helps.

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Old 03-25-2012, 09:28 PM   #3
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Cured!!!

With the help of the service manual I figured it out. No mention of this in the manual's section for locker troubleshooting but the issue was the key-in sense circuit. The ignition actuator pin assembly had broken on me and I replaced it but did not think to check the key-in circuit. With the key in a ground circuit is opened to the instrument cluster and this caused only the axle lock sensors to flash. On the actuator there is a brass/copper slide that contacts a lug when a key is inserted and this needed to be tweaked a bit to get a good contact. In the instrument cluster section of the manual it mention the flashes and beeps that are supposed to occur when the axles are locked, ignition turned off and key still in, mine didn't beep and thats what tipped me off.
Experience is what you get when you dont get what you want and I gained some on this one!!
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Old 06-27-2012, 10:16 PM   #4
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Hi,
I'm new to this forum and it's my first post.
I came across this thread via Google wondering if I was the only one with this actuator pin/ flashing locker lights issue. Apparently, i'm not. It's about a month now that i'm waiting for the actuator pin assembly to arrive so I can start my Jeep like a normal person instead of with a screwdriver lol. Just recently I went on a run with a couple of friends and noticed that my lockers weren't engaging. The locker lights kept flashing on 4low and not staying solid. I wondered if it had anything to do with my ignition barrel being removed and ignition switch not grounded to the steering column. It's funny how one thing doesn't work and thus opens up a new can of worms.
Plus, to make it more interesting my horn isn't even working because the ignition switch is not grounded to the steering column. boy oh boy whew......
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Old 06-27-2012, 10:19 PM   #5
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Quote:
Originally Posted by imthenra View Post
With the help of the service manual I figured it out. No mention of this in the manual's section for locker troubleshooting but the issue was the key-in sense circuit. The ignition actuator pin assembly had broken on me and I replaced it but did not think to check the key-in circuit. With the key in a ground circuit is opened to the instrument cluster and this caused only the axle lock sensors to flash. On the actuator there is a brass/copper slide that contacts a lug when a key is inserted and this needed to be tweaked a bit to get a good contact. In the instrument cluster section of the manual it mention the flashes and beeps that are supposed to occur when the axles are locked, ignition turned off and key still in, mine didn't beep and thats what tipped me off.
Experience is what you get when you dont get what you want and I gained some on this one!!
By key-in sense circuit, are you referring to the sentry key immobilizer module circuit?
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