Originally Posted by AF300E

Yeah. Its the released throttle switch (i think, i didn't look at the pic but by your description i think thats what you are refering to). It tells the fuel injection system when the throttle is realeased (coasting) and adjusts the eha to cut the fuel flow (not completely) i believe to improve fuel efficiency.

Please correct me if I'm wrong, I'd like to understand CIS-E as best I can.