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bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2188

Defender Td5 ABS Issues

Morning chaps,

This has been on going for a while now and always suspected a dodgy sensor however now it has a Britpart G item and still doing it.

ABS/TC lights come on randomly and stay on. Sometimes clears on its own sometimes needs the nanocom.

9/10 says "front right output too low" occasionally says "electrical failure"

Tried wabco, cheap and britpart G all do the same thing. Anything else bar the sensor that can cause this fault? Instagram @defender_ventures
Empire Tuning - Agent

28th Sep 2020 6:23am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

Wheel bearings was always a favourite. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

28th Sep 2020 8:52pm

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2188

Yup. Fronts are new(ish, sub 5k, Timken, no play) swivels have zero play as well Instagram @defender_ventures
Empire Tuning - Agent

28th Sep 2020 9:11pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17544

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Wiring fault, high impedance connection (always a popular problem with f.o.s sensor on the Disco2).

28th Sep 2020 9:23pm

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2188

Ahhh handy! Whats the fix? Cut back as far into the loom as possible and run new line? Instagram @defender_ventures
Empire Tuning - Agent

29th Sep 2020 4:49am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17544

On the Disco2 there was a service action to replace the entire sensor harness from the F.O.S sensor back to the SLABS ECU with a continuous harness, to replace the connector mounted on the F.O.S inner wing. I had to do this within weeks of the warranty expiring on my '02 D2 due to the three amigos.

Ironically last year I had to replace the F.O.S sensor and you cannot get replacement sensors with the extended harness any more, so I ended up reconnecting the original and previously disconnected harness and reinstating the supposedly troublesome connector on the inner wing.

It would probably be sensible to do a continuity and impedance check, and a visual inspection, of the wiring from the sensor connector back to the ABS controller, it might show something suspect.

I imagine that you have checked that the clearance between the sensors and the inductor rings on the hubs are correct?

29th Sep 2020 8:05am

TVR Tommy

Member Since: 26 Nov 2013
Location: Bucks
Posts: 181

2000 Defender 90 Td5 Heritage LE Bronze Green

Check the earth to ABS control unit under the seat, nut could be loose.

Edited to say:

I read your whole post (should try that first) and probably not an earth fault with the error you describe

29th Sep 2020 9:23am

bankz5152

Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2188

Thank you both. Ill check both.

Itll be fun considereing where the Defender ABS unit is

Instagram @defender_ventures
Empire Tuning - Agent

30th Sep 2020 4:41am

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