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o4dn

Member Since: 08 Jan 2010
Location: South West
Posts: 538

2009 Defender 90 Puma 2.4 SW Alaska White

Mysterious plug

Hi all,

I have a mysterious plug hanging next to the gear box/xfer box.

I initially thought it could be the diff lock connector but the light does come up when engaging diff lock. According to the service manual, the high/low range detection switch has at least 3 connectors, and I can see only two there.

So I am left wondering...:

- What's that plug?
- Why isn't it plugged?
- Where should I plug it?
- And if so, can I do that from under the car?

Any idea?

Click image to enlarge

18th Jun 2012 5:09pm

bob neville

Member Since: 30 Apr 2009
Location: Marbella
Posts: 3248

What year is the vehicle ?

I have a spare plug on my 2009 110 in the same location. It should be clipped to the gearbox and was removed in late 2010/2011 MY's.

Bob 2015 Jaguar XE240 R Sport - goes like ....... !!
2013 Defender 90 CSW - sold
2009 Defender 110 Double Cab - sold
2001 TD5 90 CSW - offroad project - sold to a forum member
2011 Porsche Boxster - for the sunny days !

18th Jun 2012 5:25pm

o4dn

Member Since: 08 Jan 2010
Location: South West
Posts: 538

bob neville wrote:
What year is the vehicle ?

I have a spare plug on my 2009 110 in the same location. It should be clipped to the gearbox and was removed in late 2010/2011 MY's.

Bob

Ah, yes indeed, mine in MY2009!

18th Jun 2012 5:49pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5834

1999 Defender 110 Td5 SW Caledonian Blue

Do 2009 MY Landies have a sensor for detecting when you engage low box? 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

18th Jun 2012 7:04pm

PaulMc

Member Since: 17 Jan 2009
Location: Kent
Posts: 499

I'm pretty sure that connector is C0100, for the driver's seat belt buckle switch, which isn't fitted to all markets.

There should be two wires - White/Purple and Black.

. Paul.
1989 Arles Blue 2.5TD 110 Hardtop
1999 Epsom Green Discovery II 4.0 V8i 'XS'

18th Jun 2012 8:01pm

o4dn

Member Since: 08 Jan 2010
Location: South West
Posts: 538

Thanks all for the replies!

I feel relieved now...

excossack wrote:
Do 2009 MY Landies have a sensor for detecting when you engage low box?

I am pretty sure it does as engaging low ratio does change the ECU mapping and throttle sensitivity.

It does not have any indicator on the dash though, but for sure the ECU can tell when the low ratio is engaged.

PaulMc wrote:
I'm pretty sure that connector is C0100, for the driver's seat belt buckle switch, which isn't fitted to all markets.

There should be two wires - White/Purple and Black.

That would match what I can see, but hard to tell with certainty given the amount of Waxoil spread out in the area

19th Jun 2012 3:18pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6294

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

Just looking at workshop manual and item 24 is the low range indicator ???.

Mine only seems to have diff lock indicator which comes on in low..... I presume this is normal?

22nd Jun 2014 7:14pm

munch90

Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

the diff lock light sort come on with diff locked in high or low range

22nd Jun 2014 7:22pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6294

Just done a search and been and checked all normal...no indicator for hi / low just for diff lock

22nd Jun 2014 7:27pm

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