Cannot find a ref to OBDZ only the Yamaha Diagnostic Tool.
I do know however that you can access fault codes via the information/speedo housing if buttons are pressed in the right sequence.
There is info how to access the ESA and reset the fault warning but going through the menu you can chose between SCU (suspension) and ECU on the S10 forum Although this info is about the ESA (if you have this model) following the ECU path might provide and answer as to how to turn off the light....I presume the bike is running OK and all you want to do is turn off the light
Below is copied from the S10 Forum. Hope it helps
Mike
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