Electrical issues after reinstalling fuse/relay junction box - Land Rover Forums : Land Rover and Range Rover Forum
 
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post #1 of 8 (permalink) Old 01-01-2017, 12:02 PM Thread Starter
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Electrical issues after reinstalling fuse/relay junction box

I had an issue with water entering my passenger side floor (U.S. model) because of a rotted sunroof drain tube. In order to install the replacement tube I had to disconnect the wiring harnesses from the Junction Box behind the glove box. Everything disconnected without an issue and I was able to remove the junction box, fit the new drain tube, and reinstall the 6 wiring harnesses I had removed. 2 on the back of the JB, 1 at the bottom, and 3 in the front. I've double checked all connections, except the back two, but they were seated good before I installed the box.

The issue I'm having is the sunroof and front left and right windows will not operate. I'm also receiving an emergency brake fault and sensors for the front and rear doors are tripping telling me the doors are open. From what I've been able to track down on various forums are it seems these are connected to the C585 wire harness slot on the JB. I've removed and reseated this connection but still have the same issues. The rear windows are operating fine.

Can anybody confirm if that is the correct harness I should be looking at? Any ideas of other items to check would be much appreciated. I'm pretty technical and able to troubleshoot basic electrical issues if someone has any schematics they could share.

I've attached photos of the JB. The C585 connection is in the upper right on the front facing photo.

Thanks,
Erik
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post #2 of 8 (permalink) Old 01-01-2017, 01:48 PM
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Join disco3 uk forum and ask there.
Also check for a warped cowl right above the Pollen Filter duct water gets in through there.
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post #3 of 8 (permalink) Old 01-01-2017, 03:35 PM Thread Starter
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Thanks, I've posted there. The cowl looked fine. The source was the end grommet had dry rotted and fell off, so the tube was inside the car just draining water in there. That part should be fine now since I've installed the new tube. Seems like a poor engineering oversight to make it so difficult to replace a part that has such a high failure rate.
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post #4 of 8 (permalink) Old 02-18-2018, 05:17 PM
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Exact Same Problem

Erik,

I am having the exact same problem after performing the passenger sunroof drain repair. Removed and then reinstalled the CJB and am now having the same issues. Sunroof doesn't work, interior light wont turn on/off, getting alerts that all doors and tailgate are open, front window don't work, parking brake fault (although it works) special programs unavailable. I cannot recall if there are others.

Did you get it sorted? What was the problem?

Thanks,

Philip
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post #5 of 8 (permalink) Old 03-31-2018, 06:55 PM
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Guys, I hope you guys fixed it. I have the same problem after removing CJB and putting back the connectors. One of the connectors in the Rear if not properly seated or locked would cause that , sunroof not working, right and left front window not working, Parking Brake Error, There are probably more, luckily I called my indy mechanic and just told me that something was not seating properly in the CJB. Just like that I check the rear connector and it was not fully latch for lock position. These freak me out as I just got the LR3 1 week ago and I'm already attacking all these known problems. Luckily I never had any leaks, but just wanted to do preventive maintenance. But the original drain tube/nipple was there and it was done.

That was my case, the symptoms are similar, but some of you could have had some damage wire from water ingress.
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post #6 of 8 (permalink) Old 04-01-2018, 11:45 PM
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I dont have shares in this believe me, i'm just using it since it appeared and never had water damage issues since, i highly recommend it

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post #7 of 8 (permalink) Old 04-02-2018, 05:02 AM
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Sounds like good stuff.

The script on their video reads kinda like Chinese assembly instructions.
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post #8 of 8 (permalink) Old 03-04-2019, 07:27 PM
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Hi, new to this forum. I know topic is a bit old but experiencing same issues and then some. Does it make a difference if the rig does not have the original head unit and amplifier that used the fiber optic cable for communication? Repaired my drain tube and when I installed the cjb all electrical gremlins came out. I can get it to turn on but only passenger front window works, only tailgate latch responds to key fob and when I turn lights on, weird buzzing sound coming from CjB. Re-seated all connectors and still the same. Thanks in advance for any info shared.
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