Where in Pennsylvania are you? Maybe there's a forum member not far away who can read the ABS codes if the new SVS switches and Option B don't get rid of The Boys from South of the Border.

Very often, faults that register as wheel speed sensor problems are because of known problems with the connectors that join the sensors to the wiring harness, and are not problems with the sensors themselves. That's why your truck may be registering sensor faults even though you have new hubs and sensors.

Best4x4, a respected contributor and an administrator for this forum, recommends cutting out the connector and using 3M-style heat shrink butt splices in their place. I've had some success simply crimping the cavities on the female side of the connector with needle nose pliers to improve the connection. But to do that you need to identify which wheel speed sensor is registering a fault. For that you need an ABS-capable code reader.

But I'm getting ahead of myself. Hopefully the new switches and Option B will take care of it. Good luck.

 

I changed the SVS, using Option B, and there was no change in the warning light status.
Today, I'm onto the wheel sensors. More to follow.........

 

Did you reset the ABS codes after doing the work with the shuttle valve switches? If you don't have an ABS-capable code reader, just disconnect the negative lead on the battery and leave it for a minute or so. Then reconnect it and drive the truck to see whether or not the Three Amigos return.

 

ABS hard faults will require a compatible scantool that can see them and clear them. Disconnecting the battery will not clear them. You can usually always tell when the ABS fault codes have been cleared. Upon startup the amber ABS light will be on by itself. Once you drive a little the light will go out once the SLABS unit see's input from all 4 wheel sensors.

 

Okay, I stand corrected. Hopefully WHALES18 will share his location and there'll be a forum member reasonably nearby with a scan tool that can clear the ABS code. Or he can buy one of the recommended scan tools.

If not, I have an ABS Amigo I can send, for a substantial deposit to ensure its prompt return to me.

 

😅UPDATE: So I tried using my DMM and the probes were too big to get a good reading, so I went old school and used my small AMM (analog) instead - probes fit in there very easily. Did the resistance test and found the left rear gave me no reading - irritating as all these sensors are less than 1 year old - replaced when I replaced all the bearing hubs. The other three were approx 1000 ohms - based on the RAVE chart they are good to go.
I'm ordering my new speed sensor and hope to have it this week. I'm also going to purchase a scanner. Not sure which one yet - the Foxwell NT630 plus looks like a good one??? I'd appreciate any input on what scanner seems most compatible with LR's and is not to pricey?
Good learning experience on this so far. Once I get the new sensor installed and get a scanner I'll delete the DTC's and see what happens. With the new SVS, option B, new sensor, new parking brake switch, and scanner I expect to have three less amigos in the Disco. Again, I really appreciate the input from everyone. I'll be throwing more great LR issues out here when I confront them.

 

Where did you use the AMM? Did you use it behind the left rear wheel on the connector from the sensor to the harness, or where that connects in turn under the hood (bonnet).

 

I checked it back at the connection by the rear wheel - the female connection that leads to the sensor. Uh-oh, don't tell me, did I check the wrong location?

 

That's the correct location. Be very careful to check the length of the new sensor. The sensor itself that mounts in the hub. One I tried to install a couple years ago was just a tad too long and actually rubbed against the reluctor ring. It was very, very frustrating until I figured out what was going on. I ended up reinstalling the original sensor and upgrading the connector.

 

I'll take that experience you had into consideration when the new sensor arrives. Can't assume anything...
I'll update when I get the new one tested, then installed and run!
Thank you,
Regards.