Copied from another post:
edit , just got it fingered out.
ok just went out and played with it, here's what i did,
put it on center stand
held tcs and reset buttons down while turning key on
held buttons down for 8 seconds
ecu AND SCU options came up, using tcs button i scrolled to highlight scu
pressed both buttons down again,
screen then read just DIA so i pressed both buttons again
had several screens of codes and numbers,
using tcs button i scrolled through them
when it read 84 on the top i pressed both buttons again and the preload adjustment started to raise the bike, it went all the way up then down,
error light went out
shut off key
turned key back on and no more code
this was all by pure trial and error, i have no idea what all the numbers stand for ,
maybe someone could sticky this under "how to re-home suspension" ...?