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2012 D4 Wiring Diagram
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rpurdie
 


Member Since: 31 Oct 2023
Location: Newcastle
Posts: 5

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4
2012 D4 Wiring Diagram

Does anyone happen to have a wiring diagram for a 2012 D4? I've ones for 2011 and 2014 but not my year.

I'm seeing an U0100 fault code with fuse F21 blowing, airbag warning light and a message about terrain response modes being unavailable. As I understand it that fuse connects to the "Switch pack center console" along with a "magnetic valve" to do with rear climate control, an air quality sensor, a temp/humidity sensor, the clock spring and the DSC control on the centre instrument panel.

In particular I have no idea where the "rear automatic temperature control module" might be or exactly where the climate control sensors are, or the "magnetic valve", if the car has it.

The terrain mode switches are dead so that matches the blown fuse. I've yet to check for shorts or starting to unplug things, I was mainly trying to work out where the different bits in question are to dig into it. Pointers welcome.
  
Post #235194831st Oct 2023 11:11 pm
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 187

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

I have D4 wiring diagrams as a set of HTML files.
Lovely documents which I'm v.happy to share with you (please PM), BUT when I went recently to pull the fuse which my diagrams SHOWED as protecting the starter solenoid, I found the corresponding slot in the fuse box beside the battery is empty !!
Needless to say my car does and has always cranked with vigour.
Regardless of deviations/inaccuracies, I'm sure the diagrams I have are MOSTLY correct.
Cheers, Kevin
  
Post #23519531st Nov 2023 12:20 am
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 187

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

Apologies, I should have read your post more carefully. My D4 is 2010, diagrams are marked 12/2009, LHD, VIN: 524545 >
Kevin Smile)
  
Post #23519541st Nov 2023 12:25 am
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rpurdie
 


Member Since: 31 Oct 2023
Location: Newcastle
Posts: 5

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Thanks for the thought! I have 2011 ones but they're for 5xxxxx VINs and mine is a 6xxxxx. They're probably similar but knowing would be good. I've realised my model may not have the rear automatic temperature control module fitted. Still need to start poking it with a meter, try and figure out what is going on.
  
Post #23520021st Nov 2023 10:54 am
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rpurdie
 


Member Since: 31 Oct 2023
Location: Newcastle
Posts: 5

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

The line from F21 appears to be shorted to ground. Unplugging the terrain controls/module still leaves the short so it likely isn't the module. I've tried unplugging the lights switch which appears to be on the circuit with no effect too.

I'm still struggling with the differences in various wiring diagrams to know what other components are on the circuit.

There are various connectors I need to track down (C0786S, C0047L-9) and a splice point (SJ396S).
  
Post #23520371st Nov 2023 6:58 pm
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rpurdie
 


Member Since: 31 Oct 2023
Location: Newcastle
Posts: 5

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

In case anyone else runs into this. the issue was a short on the wiring just before the "air pollution sensor" connector behind the ftont grill. It had rubbed through and shorted the power line to ground. The sensor isn't fitted on my car.
  
Post #23520982nd Nov 2023 2:01 pm
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JoeSilver
 


Member Since: 25 Aug 2023
Location: Mpumalanga
Posts: 4

South Africa 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

Hi Purdie,

I've just come across your posts, I'm searching for circuit diagrams for a D4 2012.
Would you be so kind as to share the 2011 diagrams that you have please?
My problem is with the central locking.

Many thanks,
Joe
  
Post #23525368th Nov 2023 7:08 am
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rpurdie
 


Member Since: 31 Oct 2023
Location: Newcastle
Posts: 5

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

There are a few online, e.g. http://bee.mif.pg.gda.pl/ciasteczkowypotwo...202010.pdf and https://fvkigw.am.files.1drv.com/y4mXemj6y...ESqmTxbOPw - you can find them with google. I couldn't find a 2012 and there were differences on my car so I ended up paying for access for a short time in topix
  
Post #23525718th Nov 2023 11:20 am
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JoeSilver
 


Member Since: 25 Aug 2023
Location: Mpumalanga
Posts: 4

South Africa 2012 Discovery 4 3.0 SDV6 HSE Auto Siberian SilverDiscovery 4

rpurdie

Thank you Thumbs Up
  
Post #23525828th Nov 2023 1:46 pm
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