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Old 11-07-2018, 11:00 PM
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Help - I'm going to set fire to this thing!

Let me start by saying I have searched, and searched and searched. Let me tell you my issue and what I have already tested.

2014 4 door Rubicon

Issue:
No dome light or DOOR indicator on instrument cluster when opening my driver side rear door. But my amp research step on the driver side still operates properly (goes down and up) when opening and closing the door the door.

Testing:
Like I said the amp step still operates. I was able to trace the wiring to see where it taps into the wiring harness know when the door opens. It is tapped into the wiring harness in the front passenger floorboard about a foot from the big connector! I unhooked the Amp step wire there and the step came up. Connected it back and step goes down. So the wiring to that point is good. And the door switch it would seem.

To test the door, I swapped the passenger rear door with the driver rear door and both doors work fine on the passenger side (dome light comes on) but neither will make the light come on, on the driver side. Again amp step works fine. Window works fine, door lock works fine.

I saw in the fuse box under the hood a listing for two fuses labeled driver door node and passenger door node. J4 and J5 only J4 had a fuse in it. I pulled it and the other three doors still worked right so I don't know what those are even for.

This is driving me nuts. Any advise on where to look next? Why does the ecu not think the door is there?

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Old 11-08-2018, 06:23 AM   #2
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I had an issue with the drivers power window. Turns out from taking the door off and on, one prong in the plug got pushed back and wouldn't make connection when plugged in.

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Old 11-08-2018, 06:25 AM   #3
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Old 11-08-2018, 10:06 AM   #4
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The sensors are built in to the door latch iirc. I am assuming you plugged the problem door into the other side and the light functioned as normal? Did you manipulate the door latch to ensure that the door is actually signaling the computer that your are opening/closing the door?

If you can rule out the door connection itself, I am willing to bet you have a bad connection at the plug (receiving end) underneath the footwell and it is only half working.



While it may seem that it is working properly because your power steps work, electrical components can mask their own failure by causing some things to work, and not others. Common example is an ignition switch. Can make it seem like other items are the culprit
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Old 11-08-2018, 12:08 PM   #5
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Old 11-08-2018, 03:46 PM
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OK, so at this point I know the door itself it fine. confirmed that by plugging it in on the other side and closing the latch with a screwdriver. I know the wire coming from the left rear door to just before the larger connector in the passenger front foot well is good. That's where the step intercepts the open/close signal. So after a lot of reading last night and finally finding a wiring diagram. I am going to pull the TPIM out and check the wire from the door all the way to the TPIM. From what I read last night they are notorious for going out with weird issues. I'll let you know what I find!
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Old 11-08-2018, 05:29 PM
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Found it. The wire from the left rear door goes into the upper of the two large connectors in the passenger foot well. It looks like it has had water in it and the pin had rusted off. I've cleaned up the rest the best they are going to be but I want to replace that connector. Any idea where I could get the connector with a foot of wire on both ends? I guess I could go to a junk yard but would prefer something new.
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Old 11-08-2018, 05:36 PM   #8
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https://moparonlineparts.com/mobile/...ss-p-1189.html

This?

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Old 11-08-2018, 09:11 PM
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No, I need the larger 36 pin connector. Might not be 36 may be 34 pins in it. The one for the left rear door is pin 33 in that connector. It just pulled out of both side of the connectors so I slapped a piece of heat shrink over what was left of the pins and just bypassed the connector all together for now. So at the moment I'm back to 100%!

Still want to replace it though.
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Old 11-10-2018, 07:37 PM   #10
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Quote:
Originally Posted by Indebticon View Post
No, I need the larger 36 pin connector. Might not be 36 may be 34 pins in it. The one for the left rear door is pin 33 in that connector. It just pulled out of both side of the connectors so I slapped a piece of heat shrink over what was left of the pins and just bypassed the connector all together for now. So at the moment I'm back to 100%!

Still want to replace it though.
get some dielectric grease and put it on your door harness connector. that will prevent water getting in.
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Old 11-11-2018, 12:23 AM   #11
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I totally sympathize with the frustration that comes with electrical mods on a jeep. Sometimes quite maddening. But this one I would classify as working but annoying from the start. Not a I am ready to burn it to the ground and salt the earth type issue. Idk maybe I am more patient. But you never messed with a renix era XJ... auto electricians took one look at it and said no, wont even look at it.

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