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Return of the suspension fault (after various new parts)
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

Right so here goes:

Had an hour and a half of light to get the arch and liner off to take a look (Also took the case off the compressor again to double check all looked okay).

Checked over the plugs and cables and couldn't see anything out of the ordinary i.e. no bulges etc.
















  
Post #198452818th Sep 2018 8:15 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

I've just pushed the liner back in and pushed the arch back on without any of the screws and expanding plastic plugs so I can get back in easy if anyone spots anything.

Does anyone know the purpose of each of these three plugs, which does what?
  
Post #198453218th Sep 2018 8:18 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

Hmmm, actually just noticed something in that last shot. The blue plug looks really chewed up, don't know what would have caused that. But also the black wire looks like it could be broken? Again, no idea what affect this would have.

  
Post #198453618th Sep 2018 8:23 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
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United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

Have u noticed that blue plug the wire doesn’t quite look right, might be the light though

EDIT , oops, apologises posts crossed , didn’t refresh the page and you’ve seen it Thumbs Up
   
Post #198453818th Sep 2018 8:27 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Ref the connectors

I imagine but of course not 100%

1) compressor
2) goes onto the rear loom
3 ) hand brake module

Did u clear the faults, then with the engine running move the wires around to then see if faults came back up again , don’t know if there’s any issue if pulling them apart to ensure there’s no dirty pin connections inside
   
Post #198454018th Sep 2018 8:30 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

I did clear the faults several times but not whilst moving wires around. Was running out of light so thought I'd get some photos and leave the car in a fit state for the night.
  
Post #198454418th Sep 2018 8:35 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Wiring pdf manual

Page 10 for the air suspension

http://media.disco3.co.uk/gallery/albums/u...ing%29.pdf
   
Post #198454718th Sep 2018 8:45 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

Thumbs Up
  
Post #198454918th Sep 2018 8:54 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

webego wrote:
I did clear the faults several times but not whilst moving wires around. Was running out of light so thought I'd get some photos and leave the car in a fit state for the night.


Thumbs Up Thumbs Up

Wonder if that black wire is an earth or possibly sensor wire .....
   
Post #198455018th Sep 2018 8:56 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4581

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

webego wrote:
Hmmm, actually just noticed something in that last shot. The blue plug looks really chewed up, don't know what would have caused that. But also the black wire looks like it could be broken? Again, no idea what affect this would have.



I'd say you found the problem Thumbs Up Check all the other connectors methodically too but looks like that's the culprit Very Happy
Actually when you look closely there is evidence of some unusual chips or teeth marks on that plug! Mice or a Rat maybe but it doesn't look recent!
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #198456618th Sep 2018 9:41 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

If it is this wire, is it possible to open this plug and rewire it?
  
Post #198457318th Sep 2018 9:58 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi

Don’t see why u can’t pull the connector apart

Also thinking it looks like a 4 x way terminal connector , so if for example u was unable to get the same connector about cutting it off and fitting a new one

But the more experienced guys will be able to advise better in what the best course of action would be Thumbs Up
   
Post #198457918th Sep 2018 10:41 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Also here is a better picture of that connector , indeed has 4 x wires , that connector looking at the wiring diagram goes to the compressor


   
Post #198458218th Sep 2018 10:57 pm
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webego
 


Member Since: 06 May 2015
Location: Bromley
Posts: 331

England 2012 Discovery 4 3.0 SDV6 Base 7 Seat Auto Orkney GreyDiscovery 4

Been studying and made some progress. Found an oooold thread on here referring to those 3 plugs. Apparently the blue plug provides power to different things. These four wires all start with C2527 on the wiring diagram.

C2527-1 is the big Brown/Red wire which powers the compressor
C2527-2 is the big Green/Yellow wire which powers the parking brake
C2527-3 Black/Purple & C2527-4 Black/Orange power the Valve-Corner-Front-RH of the front valve block.

I'll double check tomorrow but I have a feeling those two thin wires don't actually come out the other side of the blue plug, they look like they are just create a loop that leeches power from the bigger cables.

It is C2527-3 Black/Purple that looks broken.
  
Post #198458318th Sep 2018 11:00 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hi mate

Funny enough I was also looking through the wiring diagram Laughing

Suppose at the end of the day at least u have found a very good culprit that could be causing all the issues

Look forward to see what u find as u investigate more , plug looks like it just separates Thumbs Up
   
Post #198458518th Sep 2018 11:18 pm
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