Thread: Three Amigos - Fault Diagnosis

That is a good guide! It is a pity that most of the pictures are missing. I hope that if I get some help with this, I can piece it together.

Originally Posted by Elliot

Hi all,

Thank you for the wealth of information you are providing me.
I think what I will do is order a new SVS and do the option b mod.
From what I understand from the diagram above, does this mean by passing certain components (a switch) and just wiring the SVS straight to the slabs ECU?

I cannot access the fabled option b mod explanation on the Land rover club it keeps saying the website domain is up for sale. I will keep looking though. If someone saved a copy that would be awesome.

For the SVS switch would you recommend going to get a genuine LR part? I was going to go with this Land Rover Discovery 2 Shuttle Valve Switch FOR ABS Modulator SWO500030 Wabco | eBay

Thank you for your help

The WABCO item is actually genuine so good enough, you got it almost right, you are connecting the SV switches directly to ECU bypassing the modulator's internal circuit/connections(no switch) to avoid any possible bad contact... actually you only ''hardwire'' the SVS to ECU input

Elliot

check this out too.

[ame=http://www.youtube.com/watch?v=l7hZQI1gfAg]ABS TC HDC LANDROVER DISCOVERY II WABCO - YouTube[/ame]

I did option B about 18 months ago and have not seen the amigos since.

Elliot,

That is option 'b'.
If you get another SVS and.do option 'b' then you shouldn't have the holy trinity / 3 amigos / $7'?8-% '7-5 2&943@ for some time!

try the simple things first,
test each wheels sensor,
the two part sensor wires are a known problem.

and everything you need to fix the 3 amigoes is in The Good Oil Forum

Hi Everyone,

I just took the Disco from Canberra to Tarthra (500km return trip) and it happened 3 times but I made it the whole way back with not a single occurrence. Each time it went away after a restart. It was really nice to finally take the Disco on a road trip with a few 4WD km's in Mimosa Rocks NP.

As they are not on I will take my time to approach this problem. And in the meanwhile I will do more reading about it and get everything ready to do it. I really appreciate all the stuff you guys have posted, this gives me ore than enough info to get the job done!

Thank you for your help with my Disco!

You have exactly what I had. If Nanocom says shuttle valve option B will fix this.

My amigos would come on out of the blue. Turn ignition off and restart all gone.

When it first happened I did not own Nanocom. Purchased one and it said shuttle valve fault X amount(can't remember the number) of times.

As I said earlier, have not had omigos back since.

If for some reason it was a fault that option B did not fix, doing it would not be a waste of time as it will have to be done at a letter date.