heater fan not working

[merlot]

hi all
i need some help
recently my fan stopped working on all 4 settings
i checked the fuses and couldnt locate the problem
then i pulled the dash trim and checked for power to the fan...nothing
i then pulled the 4 way switch and found no power to posn 1 ....my wire is black and brown where the wiring diagram shows blue and black
the diagram then shows SF56 a 40amp fuse at holder F....also blue and black wire

well i found a 40amp fuse under the pass seat,but the wires are red and red/yellow....no power on either wire

all checks done ignition ON but eng not running

im at a loss from here

the aircon light comes on as does the recirc flap(flap works too)

my next step is ross-tech but not sure if ill do any good with that for this prob

any advise/help gratefully accepted

russ