I have an ABS light on my dash. I have replaced all four wheel bearings and (sensors) I need ABS related electrical diagrams to verify and signals are at the ABS plug. Help!!

 

Some(more expensive) scanners can read the ABS codes.

There was an ABS related recall on my 09, might be worth looking into.

 

Wouldn't an understanding of how the sensors work help more than a wiring diagram? They generate an AC signal, the computer uses the frequency to calculate the wheel speed. The wiring diagram shows 2 wires from each wheel going to the EBCM.

 

 

Welcome to the site, when you replaced the wheel bearings(hubs) did you inspect the wire harness connections to each one? Sometimes there is a bent pin or corrosion or a pinched wire.

 

did u buy it used ? maybe salvage auction ? i only ask cuz they move them with fork lifts and almost every one i bought had cut or pinched wires on the rear axle some times hard to see as there in that plastic wrap , worth a look ?? gl ,,, dave

 

The best way to ensure there is good connection is to take an ohm reading at the main ABS plug. reading each wheel sensor at the main ABS plug. that would confirm that the wiring is good.

 

If you already know why ask here?

As noted above, many code readers can at least tell which corner to look at.

 

Yeah, read the codes.
Determine the correct corner.
Then check resistance of the sensor.
That is the best way to check the sensor, although I would suggest moving the wires a bit, with the meter on, to help detect small breaks. You want very low resistance. (0.3 to 0.5 ohms is the typical upper limit).
If the wiring got pinched at any point, you could have a break.

If all of the above are OK, that means you have either something wrong with the tone wheel on the bearing (excessive debris) OR you have a wiring issue.

 

Continuity should be good enough, unless you believe a coil of wire can be too long or short by meters.
In other words: any resistance is good
Eyeballs on wires is usually good enough.