Good day, I'm new to this forum but I have a 2008 LR2 that the terrain response system is not working.
I have CAN bus signal to the selector/module in the center console but no power. I have checked every fuse in the vehicle and all are good.
Can anyone tell my what fuse or relay powers this circuit? Can anyone provide a wiring diagram for the Terrain Response system?

 

What codes are being thrown, please?

 

The code it's throwing is U0138-00 "Lost communication with terrain response module"
I have CAN signal at the module.

 

You checked for power. Did you check for ground? The module may have failed, but note that you can't just replace it with another one as the replacement would need to be programmed using the JLR SDD software and a Mongoose cable.

 

Thanks for the input I did not know that about the module replacement needing to be programmed.
I also do not have a circuit diagram, can you tell me what fuse or relay powers this circuit? Can your provide a wiring diagram for the Terrain Response system?

 

The link to download the service manual has been posted many times. Use the search function at the top.

 

Good morning, I have a 2010 lr2 with 159 and change, I am having the same issue with the same code after pulling the coupler and changing the filter. After putting all back together and new expensive fluid I took it for a test drive and all was fine, I did transfer, diff and coupler fluid/filter. drove it for 30 minutes to a location where it sat for 3 hours and on the ride home about 15 minutes in it gave me the Information notice on dash with all the usual transmission fault, traction system reduced loss of traction control options etc. no money light. I went back under and all is dry, I pulled and reconnected electrical connections and then put it on the autel. As stated lost connection with coupler, but freeze frame or maybe at time I was looking showed 14v pump off, positive change for selector values, grass etc. turning selector, pump went from off to N/A doing this several times. not sure if there should be a voltage value there to correspond with pump speed or output. every other value seemed ok. I did notice when I was under there that the ground strap looked a bit crunchy with part of the weave separated, I am wondering if there is a ground issue there and may try and double up a new ground wire to that area, still can't find that specific strap doing google searches for ground straps, I know I can also go under and power the pump plug to see if I can hear it. Next start all selections worked and test drove it got about 10 to 15 min in and got the message again. Any help would be greatly appreciated, if this sounds similar to a particular issue. I truly appreciate your responses and knowledge help this community out. This is my daughters vehicle bought used in 2016 for 10,000 grand seemed like a fair deal, but then I soon realized I am far from my known vehicles.
Thank you
Michael mikemedic3.

 

What code? There is no code mentioned here. What you got is a MESSAGE, which is not a code.

Do you have a reader that understands Land Rover extended diagnostic codes? If not, buy one (Autel AP200 on Amazon) or take the vehicle to your nearest auto shop and have them tell you what exact code(s) you're getting and post them here, verbatim. Without that all we can do is guess and I'd rather not waste my time doing that.

 

I have a intermittent UO-437-94, UO114-68, po-961-62,

 

These codes are totally unknown to me and they are not in the maintenance manual.