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Tumich

Member Since: 09 Apr 2013
Location: Prague
Posts: 9

2008 Defender 110 Puma 2.4 SW Blenheim Silver

ABS/ TC / H.BRAKE LIGHT ON

HI,
my three Musketier are always on , ABS, TC, Hand BRAKE Light
brake fluid ok, sensors ok, braking bads ok
i thing thatit is the ground problem check all the std. points - ok
then where to find the Graund/earth disconection
anyone an Idea?
thanks JT

20th Feb 2014 2:40pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17353

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

A common cause of this is a defective wheel sensor. The only way really to diagnose further is to plug in a diagnostic tool such as Nanocom to see exactly what it's complaining about.

20th Feb 2014 2:45pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Both my issues with the same symptoms was the loom chafing and grounding on the chassis.

http://www.defender2.net/forum/topic2394.html?highlight=chafing If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

20th Feb 2014 3:03pm

Tumich

Member Since: 09 Apr 2013
Location: Prague
Posts: 9

The NANOCOM Show the MAin Unit Ground fault

but i checked all the ground points and found any not to be connected,
tiome to time its ok for a while but than again ...
do you have any pic. where did you found the ground problem?

20th Feb 2014 3:09pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

Pictures were binned ages ago. But basically the loom splits into two sperate looms heading tomards each rear wheel with their own connector. It was shortly before it split where the second occurence was. Dependant on how your loom is routed the most common area is where it routes round the base of your suspension springs over the axle, that was my first experience. Second was where the loom splits into two about halfway on the underside of the truck. You can check the cables as I did from underneath the seat using a multimeter or insulation tester on the modulator connector to point you in the right direction. Then it's a matter of crawling underneath with some cleaning fluid and wiping off the loom to find the chafing. I felt it before I saw it as it was so small.

K9F wrote:
Drive for a while and repeat of symptoms above. Decided to get wiring diagrams out and 'bell out' the cables from under the driver's seat at the modulator. Short circuit offside sensor. Removed rear sensors and loom and as it was smothered in waxoyl had to give it a clean, nothing wrong with that end and all sensors had correct resistance values of about 1000 ohms. Damage was on vehicle side of loom chafed cable approximately a foot from the connector end.
Cut out affected couple of inches.
Nailed in a couple of environmentally sealed inline splices.
Then heatshrunk the area.
Fingers crossed that's an end to it!

An end to it it was.

If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

20th Feb 2014 5:58pm

Lukey Boy

Member Since: 10 Jun 2011
Location: Norwich
Posts: 122

2008 Defender 110 Puma 2.4 XS CSW Stornoway Grey

I had the same fault about a year ago. After checking all sensors and wiring as K9F posted I removed, cleaned and greased my ground connections on the chassis and g/b and this solved it for me. 2008 110 XS CSW Stornoway Grey

21st Feb 2014 3:49am

jhnstap

Member Since: 01 Apr 2013
Location: Bournemouth
Posts: 73

If its any help

Had the ABS & TC warning lights on, cant remember the code but it was a Ground/earth fault, Garage new of similar problems and re-earthed the ECU's under driver seat (TD5) back to the battery earth-2 week ago now and no problem since

My initial thought were wheel sensors, but lucky this was a cheap fix, for which I am grateful I do my thing and you do yours. I am not in this world to live up to your expectations, and you are not in this world to live up to mine

21st Feb 2014 6:31am

Tumich

Member Since: 09 Apr 2013
Location: Prague
Posts: 9

Thanks for help,
i will have a look on it deeply on the weekend

21st Feb 2014 6:45am

skyeplumb

Member Since: 22 Apr 2013
Location: Isle of Skye
Posts: 134

2007 Defender 110 Puma 2.4 USW Rimini Red

had the lights on mine, but no fault showing on the computer?? turned out to be a ABS sensor wire worn away and shorting out. Series IIa Lightweight - Long Gone
Discovery 1 300Tdi - Sold
Defender 110 XS 07MY Utility

21st Feb 2014 10:49pm

Lorryman100

Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Also check that all four wheel speed sensors are seated correctly, just push them in as the air gap may be to large.

21st Feb 2014 11:09pm

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

Had a nightmare trying to set up the gap on my sensors post fault investigation as I ddn't want to potentially damage them by setting them too close perhaps. Ultimately they need to be tapped gently all the way home up to the collar.

http://www.defender2.net/forum/topic20879.html?highlight=gap If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

22nd Feb 2014 10:22am

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