Thanks @Ken W - I guessed as much. Anyway, success ... with the controller connected I just got these figures an hour ago:You have not tested the full system. These ECUs monitor all their outputs and it will detect an error if they cannot see the appropriate load on the output. I suggest you leave the controller in the air box and stick your pin or a thicker piece of wire into the back of the white wire hole in the back of the connector and then monitor what is going on with the different fan speeds. That is how I measured the values in my car and you should be trying to replicate my method so you can compare the results.
Cheers, Ken
Ignition off - 0.01 volts (I forgot to flick the voltage selector to microns to get a more accurate voltage)
Ignition on - I think I missed this step
engine running with fan not running ie 0 segments - 0.01 volts
1 segment - 3.16 Volts
2 segments - 3.19 V
3 " - 4.25 V Fan still pretty quiet up to this setting
4 " - 5.29 V Registering air flow noise but not much
5 " - 6.22 V (No change in fan flow)
6 " - 7.38 V (No change in fan flow)
7 " - 8.69 V (No change in fan flow)
8 " - 11.66 V (No change in fan flow)