ABS MODULATOR FIX (NO more SVS fault)

[Disco Mike]

Originally Posted by christian0531

so i have the 3 amigos on my dash they go on and off constantly while i drive but some days nothing some days a few times between parking and going and i was nervouse as all hell but your post in full detail is deffinately a major help i like how you described step by step how to check for everything. I guess now i jus have to find the problem or someone around PA to do a check and tell me what it could be thats going off but thanks it's a help

Find a mechanic or friend that has Rover software to enable it to enter and read the actual fault codes. A 3 amigo scanner or a Hawkeye are what many people use to help them thru this problem where guessing usually won't get you far.

[stade]

recently i broke my drive axle and cv joint on my drivers side of my 2004 disco 2 pulled all out myself and slid a new one in bolted everything back on greased that wheel speed sensor in there but it back nice and snug then started my car and made it a couple feet and the three amigos came on ive taken the whole assebly back apart messed with the sensor cleaned pads and rotar and still my lights will not go off after reseting the computer i know it has to be somewhere in the bearing breaks cause wasnt doing it befor i broke the axle and i had to drive it home and still nothing was on so any advice about what i could do to further eliminate other problems..

[mx468]

Just finished the option b and flushed brake fluid, three amigos are gone and truck runs great!!!! Thanks for all the useful info on this site. Saved me $300 by doing it myself.

[scabbo1]

Hey guys - any advice - maybe a bad ground? I reseated the ground once already. I might be able to video my handywork if needed.

I did everything and I'm still getting this code: (Via Amigo)


1.--Current Faults---->
Active Faults:
None
Logged Faults:
016:Shuttle valve long term fail
<-END Faults

Thanks!

[fchidsey0144]

Ok so I am a newb here, we have a 2003 disco 2 the other day the "three amigo's" showed up plus my brake light. I ran some road tests and there is no ABS traction control or HDC that works right now, does the unit WABCO unit need to be replaced or am I off base here, I read the Fix but because my BRAKE light is on I was thinking that might not be the problem.


Thanks
Fred

[lowest bidder]

Thanks for this great write up! Yesterday I replaced the shuttle valve seals and the switches and also did the B mod. I took my time, I began intending to remove only half of the modulator and ended up removing the whole unit, figuring I had less chances of breaking somethingthat way. Of course I had to bleed the modulator and lines afterward, but it is so easy to do with the Hawkeye that I was able to do it all by myself. It took about 6 hours all told, and I cleaned about half the engine bay while I was there.

Thanks again!

[Scrubo]

Great step by step write up! Really is helpful when you have no idea what you doing! Thanks!

[TRuiz]

I did the fix last year, and checked to day to see what codes were there. The 114 pooped up. Should I assume the fix did not work? Anyone had a similar experience?

1.--Current Faults---->
Active Faults:
114:Shuttle Valve Electric Failure
Logged Faults:
044:Front Right sensor output low
046:Front Left sensor output low
Front Left Sensor Bad Output
114:Shuttle Valve Electric Failure
<-END Faults
------------------------------------------------------------
* *
------------------------------------------------------------
..--Previous Faults--->
Active Faults:
None
Logged Faults:
044:Front Right sensor output low
046:Front Left sensor output low
<-END Faults

[phosphor]

great write up, easily one of the best thought out write ups I've seen in a while. kudos!

I went with Option B - and avoided flushing brake fluid. It took me about 4 hours in total - I dont have a lot of experience. heres some feedback:

I purchased the same trailer harness from O'Reilly:
Hopkins Manufacturing 47965 - Trailer Light Extension | O'Reilly Auto Parts
note, if you are doing this, be aware that the hopkins trailer extension cable is 12 gauge stranded while the SVS brown cables and the yellow/green cable are both smaller - 14 or possibly 16.

I used butt splice instead of splice/solder - my soldering skills are terrible.
Gardner Bender 16 - 14 AWG Butt Splice Heat Shrinks (7-Pack)-AMT-4123 at The Home Depot
In retrospect I'm not sure if this connector is ideal given the differences in the gauges of the wires.

very fiddly work. using an allen key with a short arm really helped - when undoing the bolts on the underside of the ABS most of my time was spent trying to get the key inserted into the bolt. by moving the abs around I could get enough space to rotate the smaller key without removing it.

Dropped several tools deep into the engine bay. I suggest padding out the area around the ABS with towels to catch runaway tools. I had to dismantle the air filter box twice to rescue an escapee.

Things I broke during this fix:
one of the pastic arms on the clips that hold the brake lines to the bulkhead. very hard to maneuver the brake lines back into place without breaking this plastic clip.
intentionally broke two of the four plastic arms that hold the SVS plug to the cover plate. I also needed to widen the two holes in the coverplate to allow the cables to pass through. I left the svs plug out when I put it back together.

now to wait & see if the three amigos return!

[wags]

I have the three amigos, friend ran a scan today and got P1592 Ruff Road Signal drive code A. It would not clear off. Anyone ran into this code?