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Power to compressor
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Lr3life
 


Member Since: 08 Apr 2022
Location: Northampton
Posts: 14

United Kingdom 2006 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3
Power to compressor

Hello All,

Could anyone tell me if the power for the compressor runs straight off the relay directly to the compressor plug in the compressor housing? I have power at the relay but down at the compressor plug I have 0v.  
Post #22872529th Apr 2022 4:07 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10652

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

There’s a connector in the front passenger footwell.

Early models by door
Late models by headlight  
Post #22872689th Apr 2022 5:42 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

Do you have power both sides of the relay Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE  
Post #22872739th Apr 2022 5:53 pm
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Lr3life
 


Member Since: 08 Apr 2022
Location: Northampton
Posts: 14

United Kingdom 2006 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

So it’s runs from the Relay bank into the car at the passenger footwell as I have an early model and the back through a grommet along the chassis above the air tank and to the compressor?

So before I could bridge across the pins for a few seconds and the compressor would kick in, if I do that now it doesn’t and if I leave the bridge in then I have no power at the compressor plug. I have 12v where I should have it but if I bridge across then nothing happens. But when I run 12v straight to the compressor from a battery it fires up. I must have a break in the loom from the relay to the compressor  
Post #22872779th Apr 2022 6:19 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10652

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Sorry I didn’t mean footwell. I meant wheel arch. It’s on the outside  
Post #22872789th Apr 2022 6:24 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20829

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Arch liner out, and check the big blue plug. One wire for the EPB, the other for the compressor Thumbs Up My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #22872859th Apr 2022 7:00 pm
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Lr3life
 


Member Since: 08 Apr 2022
Location: Northampton
Posts: 14

United Kingdom 2006 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

Thanks everyone, will get on it once the kids are asleep!  
Post #22872869th Apr 2022 7:23 pm
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1812

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Check the fuse alongside the relay. In some vehicles it is a 60 amp but LR changed it to a 70 amp. Pull the fuse out as sometimes the connectors can be burnt.  
Post #228883122nd Apr 2022 7:52 am
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