I was not able to measure AC voltage at any wheel to an appreciable amount to test the sensors. Not sure if this is an active sensor or I am doing it wrong but no reliable readings all the way down to 2 volts.
Went through everything again and here is where I am at.
I cut a speed sensor apart so I could access the wires. I get 12v on brown wire, nothing on white signal wire with CAB connected. No shorts to ground or shorts to voltage on either. Continuity to proper pins on CAB connector. All manual troubleshooting steps for wiring pass
I tested a second ABS module and get the same error so that rules out a bad module which is what the manual thinks it should be.
I removed the LF wheel speed sensor at the body connection and when I do that, I get the same error as the RH WSS. Sensor circuit line monitoring error.
Based on the manual I am left with a wheel speed sensor itself or maybe a hub? I ordered another wheel speed sensor and installed with no difference. I don't see how it could be the tone ring. Visual inspection reveals no damage. Don't see a way to check air gap.

Question for this circuit do the wires have to be a twisted pair to work? Not sure how much twist they have after splicing the wiring harness back together.