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Brucey



Member Since: 18 Jul 2012
Location: Warsaw, Poland
Posts: 61

Poland 2004 Defender 110 Td5 DCPU Auto Java Black
Curious ABS problem
Well, my Defender does not know its left from its right!

To be fair it has an excuse as it started out as RHD and is now LHD.

Problem: I ask the nanocom to test FL wheel and it locks FR.. same swap at he rear (but for some reason the Nanocom cannot see the RL which is another problem).

I have always thought that there was something very strange, but never had the opportunity to test it. If I am braking over a pothole, it applies the TC to the driving wheel not the one which lost grip, which is a pain.

I have checked the pin-outs of the various plugs and all seems well. What I am not sure of is what the modulator output pipes order is on a 'proper' LHD. I can only assume that my Modulator was just swapped over when the conversion was done and all seems OK; FR output goes to FR wheel etc......the ABS just thinks that it is FL!!

The simple solution that I can see is to buy some pipe and make up new pipes to match what the ECU thinks it is and just get on with life!!

But, anyone know if the LHD and RHD had different ABS ECU's or something? There are different plug numbers on Rave, but the pin-outs are the same....

The sensors go to the correct corner per the ECU, hence my suggestion of a mechanical swap...but I suppose, thinking aloud, it would be a damn sight easier to change the output wires around between the ECU and the Modulator....


Any bright ideas or things to test.??

Thanks

Chris Defender 110 DC converted Auto
BMW R1200GS
BMW F650GS Dakar
Post #300289 19th Jan 2014 2:57pm
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martinfiattech



Member Since: 13 Nov 2013
Location: leicester
Posts: 422

England 
Hello,

I have no experience of a nanocom tester so please bare with me (only used to dealer level kit) can the nanocom kit reconfigure the abs ecu from rhd to lhd this might help.
(I know this works on lhd mini buses / motorhomes that have been converted and everything gets a bit confused especially on fiats )
Or if it gives wheel speed signal read outs does it show speed signal of spinning wheel in its correct location,
If above is ok check ident codes on abs modulator unit correspond with wheel location if nessary follow the pipes.
I had this problem once on a brand new frontera the inlet pipe to the abs unit was connected to the output of the modulator this gave me a really hard pedal and no brakes, that was the longest p,d,i I ever did, hope this helps
Post #300342 19th Jan 2014 6:55pm
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K9F



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

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
To me being a sparky the idea of you repinning the modulator connector seems the quickest and simplest solution. Maybe an hours toil? How long would it take you to do the mechanical option? A damn sight longer I'd wager.

Keep it simple. Thumbs Up 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!!
Post #300345 19th Jan 2014 7:03pm
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Brucey



Member Since: 18 Jul 2012
Location: Warsaw, Poland
Posts: 61

Poland 2004 Defender 110 Td5 DCPU Auto Java Black
ABS round 2
OK, re pinned purple plug to ABS ECU (swapped pins 1 & 2 for 4 & 5 and 7 & 8 for 9 & 10) to change operation of left hand a right hand ABS. so now when I ask for LF test on the nanocom the LF wheel dutifully locks up...hooray.

BUT, being a glutton for punishment I thought that I would test further (as basically nothing on the ABS/TC works (even the dash lights!)). So, test outputs for option on the nanocom eg LF input you hear a solenoid ticking away and the same for all other inputs and outputs until I come to Left Rear Output....select this and the ABS pump runs as if a full wheel test!!!

So, I assume that either the Nanocom is faulty or the ABS unit Left Rear output solenoid is faulty. Seem Logical?

The ABS ECU is showing no faults (I have a spare ECU and it gives the same results).

So, the big question: Is the ABS pump modulator unit serviceable as far as the output solenoid goes?

Again thanks for any hints!

Chris Defender 110 DC converted Auto
BMW R1200GS
BMW F650GS Dakar


Last edited by Brucey on 21st Jan 2014 12:11pm. Edited 1 time in total
Post #300662 20th Jan 2014 7:15pm
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jimbob7



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

This is the company most recommended for repairing pumps,from what they say there are very limited repairs you can do.Have you got any fault codes at all??Hope this helps.

http://www.ecutesting.com/land_rover_common_ecu_failures.html Pov.spec,ftw. 2006, 110,TD5.
Post #300730 20th Jan 2014 10:12pm
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martinfiattech



Member Since: 13 Nov 2013
Location: leicester
Posts: 422

England 
hiya
can your nancom actuate the dash warning light ? if so this would prove wiring ok or has some one removed the bulb / led because of an under lining fault? i don't know what lives in side the cluster as so far that's the few bits I haven't had any problems with.
Also is the abs ecu and modulator unit getting all its earths and feeds both battery and ignition.

Oh forgot to add if you think your solenoid is faulty fit a test bulb (my self I use a noid light in case of ecu overload) this would prove circuit function, or test for continunity across valves comparing readings with good and bad, going even further place amp meter in circuit to measure current and poss fault in valve or bad wire failing under load
hope this helps
Post #301150 22nd Jan 2014 10:28am
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Brucey



Member Since: 18 Jul 2012
Location: Warsaw, Poland
Posts: 61

Poland 2004 Defender 110 Td5 DCPU Auto Java Black
Hi There

No. I cannot get the ABS to TC lights to work. I have checked continuity between the dash plug and the ECU wires and all is OK. I assume that the Dash module id defunct and need to get another (YAZ100000 I think). There is some history here as I bought the Landy new in 2004 and froth start the three amigo's used to light. It went back to the dealer loads of times and they did not fix it......until one day it came back with no lights...but everything seemed to work Wink . It has been like that since with no problems. My only problem now is that when the ABS operates the back right wheel locks.

I have ordered an new Nanocom (mine is the old series one) as I cannot read the inputs from the ECU (the Nanocom crashes) so hopefully the new one will work better. I suspect that I need to free up or repair the output solenoid/valve of the rear right wheel. I don't know if this is possible or if I need to get the reconditioned unit from EcuTesting as the link earlier.

The ECU has no faults logged. so I think that I'll keep on driving (as the Landy is my daily drive) until the winter weather is gone and then dismantle myself....

Chris Defender 110 DC converted Auto
BMW R1200GS
BMW F650GS Dakar
Post #301154 22nd Jan 2014 10:42am
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