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MM44MM

Member Since: 02 Feb 2016
Location: Sydney
Posts: 3

Dash Light problem

HI All,

Recently I went through deep flash flooding across a road & since then whenever it rains both the ABS & Traction Controls dash lights both stay on for the journey & some times longer. It apears that both ABS & traction control systems work fine.'

Is there anything either under the bonnet or underneath some where else tnhat could causde this please?

Cheers

Mark

2nd Feb 2016 11:26pm

Mash

Member Since: 09 Feb 2015
Location: Guernsey
Posts: 1674

Long shot but some crap could now be I between the abs ring and the sensor, might be worth a quick check also ensuring the gap is correct. 90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html
110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html
52HG25 lightweight https://www.defender2.net/forum/topic72342.html
D3 Hse - Fiona
Capri 2l S - Anna

Think I might have a problem............

2nd Feb 2016 11:35pm

MM44MM

Member Since: 02 Feb 2016
Location: Sydney
Posts: 3

Hi Mash,

Thanks, but being a bit of a dummy with these things - where is the 'ABS Gap' & how big should it be?

Thanks

2nd Feb 2016 11:44pm

Mash

Member Since: 09 Feb 2015
Location: Guernsey
Posts: 1674

Ok so after a quick read up as I'm not posh enough for one of these shinny ones with abs

The sensors seem to be through the axle casing, I think you need to remove the calipers and disks in order to gain access, the air gap should be around 1/4".

You can test the sensor without removing it with a fluke, it's a case of disconnect the cable (I think the connection is in the engine bay, trace it up from the axle it will be the only cable) setting the fluke to ac millivolts and with the wheel jacked up, ignition on. Spin the wheel and a voltage of 50-700mv.

This is knowledge off other platforms but I am sure it is the same if not someone more knowledgeable than myself will be along soon, if you have any doubts in working on the braking system leave it to someone competent

90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html
110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html
52HG25 lightweight https://www.defender2.net/forum/topic72342.html
D3 Hse - Fiona
Capri 2l S - Anna

Think I might have a problem............

3rd Feb 2016 9:20am

jimbob7

Member Since: 06 Jul 2013
Location: uk
Posts: 2055

Sounds like a sensor fault,it could be damaged wires anorl so your gonna need to go looksy,the wires run into the abs ecu under the seat (TD5).You can either disconnect each sensor (there's another connection maybe 18" from each sensor,or test it at the ecu which you need wiring diagram.As for spacing you can't measure them front or rear as there is no access (for measuring purposes).You simply push the sensor in so it touches the ring, then slowly spin the wheel which pushes the sensor back out. Pov.spec,ftw. 2006, 110,TD5.

3rd Feb 2016 11:04am

Supacat

Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

2013 Defender 110 Puma 2.2 XS DCPU Keswick Green

OP - what vehicle model are you taking about - if you complete the profile bit, it may help people direct you to the right answer.

3rd Feb 2016 2:18pm

MM44MM

Member Since: 02 Feb 2016
Location: Sydney
Posts: 3

Defender 110 - 2010

3rd Feb 2016 11:44pm

Supacat

Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

If you check all the wheel speed sensors for physical integrity as suggested then I'd move on to other parts of the system and check the harness plugs to see if they have any water in them or are not fully engaged and so letting water in.

Start with the Hydraulic Control Unit under the bonnet - it has two multiplugs to the rear and a third underneath.

The ABS Module is located in the right hand seat box and has 3 multiplugs.

Finally, if all this is OK then you need to get someone to plug a scan tool into your OBD and read any stored DTCs - there a shed load of them applicable to this system and it will help point you in the right direction.

If all this means nothing to you and you fancy finding it all for yourself then the Workshop Manual can be download from here:

https://onedrive.live.com/?id=4BC2D89C85C7...9C85C7C171

courtesy of dgardel

4th Feb 2016 11:01am

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