ABS doesn't work. Wiring issues?

[Rebel_way]

Hi there.

How would I find which abs sensor is faulty? Mine abs light came on a while ago and I have no idea what is the problem or how to test each sensor and to find which is faulty? Also how would I find information on where abs harnesses located? I have an idea that wiring harness to my rear drivers sensor was probably damaged when top bracket that holding the rear spring at the frame snapped off where it welded to the frame, it could have damaged wiring above it?? It is hard to reach place to just check and I'm not sure if any wiring got damaged or even if the wiring that located above the bracket is related to abs. Bracket got rewelded back.

Sorry if this topic have been discussed before, but I really need help, got a micro heart attack today when went sliding on wet road with breaks locked

 

[dogtail]

Yeah high probability the wire got snipped when you had that break off. I clipped my ABS wire when I broke a rear shock. I repaired it by soldering the wires together and shrink tubing it, was a nice clean repair. I was considering replacing that area harness but it would have been too big of a hassle.

 

[JohnMc]

Try to read the error codes: https://www.toyota-4runner.org/230426-post9.html

And go from there.

 

[Rebel_way]

Thank you guys for your help. I did the testing via diagnostic port by shorting contacts and counting number of blinks, after that I checked resistance reading of the sensor to make sure it is faulty. It ended up beeing my driver's side which was replaced earlier with new aftermarket abs sensor which got failed pretty quickly even though I wasn't driving much. Luckily it wasn't problem with the wiring in the back which is problematic to get to.
So I went to one guy and picked up a sensor from part 4runnet and is working fine