WTB Yaris electric steering column + steering ecu

[CTScott]

Originally Posted by ayashifx55

Are you saying theres a wire that goes to the ecu to power the steering? Thats probably the VSS wire that goes to the ecu (speed sensor) ?

The power steering ECU does require the VSS (speed) input. With that not supplied it will not provide power assist. On the Yaris, that signal goes from the sensor on the transmission, through the instrument cluster, and back out to the PS ECU and the ECM. The cluster does not do anything to the raw VSS signal, except pass it over to the other devices.