Markyc100
Member Since: 30 Nov 2021
Location: Lancs
Posts: 20
  
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Will do 👍
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 18th Dec 2021 11:29 am |
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jimfraser
Member Since: 29 Oct 2020
Location: Black Isle
Posts: 6
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Pete K wrote:Markyc100 wrote:When the head unit is on there is no red light to the amp under the seat from the MOST cable, does that point to the head unit? I am trying at attach a video to show the problem
Interesting.
You should get inside and lock the car. Keep and eye on the headunit till it goes off. Say still and wait.
Then press the fob unlock button and quickly look at the optic. Is it red now ? If not then the problem is not the amp
It could be other things though:
bluetooth
LCD nav display
the orange optical pipes
Thanks for the post. I have a similar problem. Checked all the fibre and lights coming from them. Replaced the amp but still no progress. Will a faulty bluetooth module cause this also?
Thanks.
Jim
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| 6th Feb 2022 12:50 pm |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
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Yes it could. You can but fibre optic connectors to bridge out the module to prove the fault Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
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| 6th Feb 2022 1:31 pm |
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jimfraser
Member Since: 29 Oct 2020
Location: Black Isle
Posts: 6
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Thanks for your reply.
I suppose I'm fortunate (Maybe not!) in a way in that I have three Discos' So I was able to exchange the Amp, Head Unit, display, and bluetooth unit into another vehicle and they all function there. Similarly , I was able to test all of the functioning ones from the known working vehicle into the problematic one and there is no sound. Would this suggest that there is a MOST cabling issue? I have ordered a test loop from eBay but was curious as to whether after changing all the components you think it could only be the MOST cables. If so can you point me to where I can purchase a new harness?
Many thanks,
Jim.
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| 6th Feb 2022 6:03 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10676
 
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You can test them by shining a torch in one end (eg display) and the looking at the amp to see if one side has had a white light.
Or see test description above.
Also check if the above mentioned devices have power.
What is the display doing ? Blank? Lr logo ? Normal ?
Last edited by Pete K on 6th Feb 2022 6:17 pm. Edited 1 time in total
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| 6th Feb 2022 6:16 pm |
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jimfraser
Member Since: 29 Oct 2020
Location: Black Isle
Posts: 6
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Great thanks
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| 6th Feb 2022 6:16 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10676
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See edit above
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| 6th Feb 2022 6:18 pm |
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jimfraser
Member Since: 29 Oct 2020
Location: Black Isle
Posts: 6
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They all have power. The display is frozen on LR
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| 6th Feb 2022 6:22 pm |
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jimfraser
Member Since: 29 Oct 2020
Location: Black Isle
Posts: 6
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An update. The test loop arrived and all the loops are fine. I have swapped all the modules
Screen
Head Unit
Amp
Bluetooth
with another Disco that I have and in which they all operate. I have installed them one at at time in the problem vehicle and then collectively and they do not operate. I install the "Problem" units in my other disco and they operate fine. I'm thinking mice and a chewed copper cable but not sure. The display has the LR logo constantly and there is no volume or indicator of same on the head unit.
Its a head scratcher for sure.
Grateful for any assistance. Thanks.
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| 17th Feb 2022 9:21 am |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10676
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you need to check out your optical cables.
I think I described above maybe?
Shine a torch into one orange lead connector, and see if you see white on the next module connector.
You will only see it on one side at a time.
They are in a loop.
If you do it between the headunit and LCD connector first , you should get an idea of what I mean and how it works
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| 17th Feb 2022 12:30 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10676
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Some countries also have a traffic TMC module next to the Bluetooth
Which should be swapped to eliminate.
Check it and all modules have power
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| 18th Feb 2022 5:15 am |
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