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Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6644

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

Sounds like the "three amigos":

https://www.defender2.net/forum/post658022.html
https://www.defender2.net/forum/post658022.html
https://www.defender2.net/forum/post449115.html
https://www.defender2.net/forum/post628448.html

Plus more threads on here if you do a search

Depending on where you are in Oxfordshire I have a Nanocom near Banbury

1988 90 Td5 NAS soft top

2015 D90 XS SW

15th Jun 2020 9:03am

rustyredwreck

Member Since: 16 Jan 2020
Location: Oxfordshire
Posts: 24

Thanks Martin,

I've sent you a PM,

kind regards

Neil

15th Jun 2020 10:39am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6644

Replied

1988 90 Td5 NAS soft top

2015 D90 XS SW

15th Jun 2020 10:45am

JWL

Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

I've had an intermittent problem with the abs/tc set up on my Td5 110 for quite a while. Mine was a poverty spec 2002 model but was bought new by Thames Valley Police hence the extras, the problem would really show up in the wet and eventually the lights were on all the time. I suspected an electrical fault but as we all know they're pretty difficult to find.
My old Nanocom 1 told me that the fault lay with the NSF sensor and I could "cure" the fault by tapping the sensor down into the swivel pin and the light would stay off for weeks but that wasn't working towards the end. I upgraded my Nanocom as it was starting to suffer with buttons not working and being able to connect to a laptop and with the Nanocom Evo tou can measure the voltage from each wheel sensor. You could immediately see a discrepancy in the voltage to the NSF but when I was wriggling the cable it would go back to the same voltage as the other sensors.
By a process of elimination , bridging the wires on the socket on the inner wing, full voltage, so the problem was the cable to the sensor. New sensor ordered as when I wriggled the cable on the top of the sensor I found where the problem was, doing a cut and shut on the wires just where they pass into the sensor body is not an easy job a new sensor was needed.
I found all this a couple of months ago at the start of lockdown, trouble is that then I put a zip tie to hold the cable in a position where it works and it hasn't put a foot wrong ever since, the new sensor and cable was delivered but is still in my Spares Box in the back!

15th Jun 2020 10:43pm

rustyredwreck

Member Since: 16 Jan 2020
Location: Oxfordshire
Posts: 24

Thanks to Martin I now know it is an intermittent ABS pump fault.

I've looked in my parts manual and workshop manual without success, so I should like to find out:

1 - is there an ABS relay? All I can find is part nr SRD100490 ECU for ABS and traction control in the parts manual (03 TD5). Is it just the ECU without a relay (I cannot find an ABS relay in the manuals);
2 - I was proposing to replace this first - but if it is the ABS ECU I need to replace I can't find one anywhere - any suggestions?

I didn't want to dive in and replace the ABS pump without first trying to see if it's the ABS ECU (easier and cheaper to replace than the pump).

Any help much appreciated - and thanks to Martin for the assistance on a rainy day in identifying the fault.

Neil

18th Jun 2020 11:25am

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6644

ABS relay is one of the two 70A type relays under the seat. I should have got a bit wetter and pointed it out to you

Click image to enlarge

C0508 is the pump relay.

The ECUs on these don't generally play up as far as I know.

1988 90 Td5 NAS soft top

2015 D90 XS SW

18th Jun 2020 11:44am

rustyredwreck

Member Since: 16 Jan 2020
Location: Oxfordshire
Posts: 24

Thanks Martin,

I knew upgrading from a series 3 was going to be quite an intellectual challenge!

kind regards

Neil

18th Jun 2020 12:15pm

roel

Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

You should search the net for Rave disc. Then you have all the workshop manuals and electric libraries.
I didn't check this link as I have them already. Where I got them from does not exist anymore.

https://www.landyzone.co.uk/land-rover/rav...al.260227/ Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)

18th Jun 2020 3:04pm

rustyredwreck

Member Since: 16 Jan 2020
Location: Oxfordshire
Posts: 24

Thanks for your suggestion Roel,

I have the workshop manual and the parts manual in hardcopy plus the Haynes manual for the TD5. i'll see what I can find on the web as you suggest - I am going slightly round the bend trying to find the part number for the ABS pump relay.

18th Jun 2020 6:06pm

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