ABS/air bag/4wd warning lights on

Well shit… my instrument cluster came on like a Christmas tree. I jumped the pins on the OBD port to get the codes and I had a bunch of LF speed sensor codes. We were getting rain every day from hurricane Ian so I said fuck it and just ordered a new speed sensor figuring it went bad and all the other stuff was lit up/disabled because of it. $120 later and it’s still a no go.

I popped the connector off the speed sensor and I’m not getting voltage from pin to pin. However from the + pin to battery/ground I get 12v. Resistance testing on the - pin to ground shows an open. Thought maybe it’s the wire that runs along the suspension but I have the same issue at the main harness.

i was looking at the wiring diagrams and FL+ & FL- both go to the skid control ECU. Said ECU also has two grounds it appears.. EB and EA.

Does anyone know where these grounds are? Also where is the skid control ECU? If anyone has one of those diagrams that shows the location of all the grounds that would be awesome! I already downloaded a few zip files off the forums with a bunch of diagrams but I wasn’t able to find what I needed. I’m thinking it’s a ground issue somewhere hence the ABS, air bag and 4wd issues simultaneously

 

Could be the tone wheel on the back of the wheel bearing that the sensor reads off of