VW 'Distance sensor' signal

Has anyone had success with connecting the VW distance sensor (VSS sensor) signal direct to a TDI ECU ?

In the original vehicles, the sensor connects to the instrument cluster (for the speedo) which generates the vehicle speed signal which is then used by the engine ECU and other systems. So there's a possibility that the VSS signal is actually different to the raw signal from the distance sensor.

Hope this makes sense..

Speak to Tim v w nerd . He just sorted mine . I think factory t3 one under reads by fifty percent. German website sells them for sixty yo yos that are calibrated correctly

i dont fucking know.

The vss that I have seen and used are a 2 wire type which I rig up to a control box that gives a digital signal that the ecu can read.

I think I wasn't clear enough in my OP, I was referring to the so-called 'distance sensor' which screws to the gearbox on Mk3 Golf etc for their electric speedo. The reason I'm interested in these is that I'm considering fitting the Passat cluster at some point.

I think you guys are talking about the senders which fit to the back of the T3 speedo housing, similar shape units seen on Mk2 Golfs with MFA. There are two versions of these, a 2-pin inductive sender, and a 3-pin Hall sender. The T3 CCS used the 2-pin inductive sender.

I had a 3-pin sender lying about, pn. 321 907 345 A, from an early Mk2 GTi. I fitted it earlier today, hooked it up to the TDI ECU, and via Scanguage got a credible vehicle speed, albeit about 10% under the real speed (via GPS). Not a problem with the Scanguage as you can apply a compensation factor. The TDI ECU also has a compensation setting, albeit of a limited range, I'll look at that as well.

I think the 'B' suffix is OK too, according to Google. On the Golf cluster IIRC it connects via flexi PCB. I prised open the hinged back of the sender and removed the flexi PCB, then soldered on some fine wires to the contacts. I'll check which is which tomorrow and let you know.

The A suffix is VDO IIRC..