2014 PiP ABS ((!)) and Trac/VSC orange lights on, no engine codes

I did a little search for the part # and got a match at ebay for $26 shipped.
search at google - 89543-47030
or search on ebay - New ABS Speed Sensor Front Driver Left Side LH Hand for Toyota Prius 8954347030

 

Ok, and those pics are of the connector that is part of the sensor's own wiring, has pin terminals in it, and the mating connector from the car in the wheel well has socket terminals and it's ok?

If you wanted to repair the OEM sensor rather than going for an eBay item at a tenth the price, you probably could buy the repair terminals from Toyota and repair the connector, for about the same money as the eBay sensor.

The tricky bit would be, the Toyota wiring diagram will only show the socket terminals used for the car-side connector. It will list a size in mm and a style, something like "1.0 II waterproof (female)". The challenging bit is you then browse through the wiring diagram looking at the various harness-to-harness connections looking for one that lists the same style terminal, only male, and if you find it you buy that part number.

 

I don't think those are Toyota numbers, but if you found a third-party source for matching connectors, other readers here might be interested in details of where and how you found them.

 

Those nubs of wire left on the sensor side look to me like they would present more of an issue to try to splice back into the wire harness effectively.

Since not getting resistance from thos nubs of wire in the sensor, makes me wonder if the sensor uses some kind of magnetic fluctuation from the hub spindle part it reads from.

 

I don't think the pics are showing the sensor, just the electrical connector at the end of its (rather long) pigtail. So a repair would be to just remove those pins from the connector housing, nubs and all, replace them with the correct repair terminals (which come pre-crimped to short lengths of wire, at least the way Toyota sells them), and splice those to the pigtail.

In Gen 3 and later, the sensors are built on Hall-effect ICs, so they produce a clean digital output, rather than a waveform that got fainter and fainter as the car slowed down, like the older ones. They were described recently in this post by mr_guy_mann.

 

Thanks, yeah I thought the connector was the sensor when looking at the pics since I haven't seen an assembly for the prius. It did look like a strange sensor though frrm what I've seen on other cars.

The link to mr_guy_manns' post was good, now I beg the question just how a hall sensor detects AMPs' passing though it.
And if the speed sensor changes the voltage it sends to the ECU as the car slows down - does that mean the sensor is powered though the harness somehow to produce the signal it sends?

electronics ey ye

 

Here's a datasheet for a typical small Hall sensor IC.

I don't guarantee that's the exact one used in the wheel sensor, but there may well be some of that exact chip in the car in one place or another. They're used all over.

You just need two wires, you put a voltage across it, and it gets its power from that, and it will consume more current or less depending on whether a magnetic field is impinging on it. If you have a resistor in line with the voltage you are supplying it, you can detect the current changes as voltage changes.