[200q20v] Idle switch

[Brian.Link at Level3.com]

200q20v gang,

I pulled codes and ran the output tests on the 2C, I have one error code,
2121  Which is a bad Idle switch.  I read on Chris's page to learn the
function of the switch.  I have a few questions,  Is the switch separate
from the throttle valve potentiometer?  If not where is this located?  And
has anyone else replaced it before that could tell me how much $ and P/N?  

Thanks 

Brian Link
Boulder, CO.