My gs300 discovers a pipe with green lable take off for a while. Does anyone can illustrate what is it? see attached image.
the pipe located under brake booster assembly

 

evap test port

 

Yup, Evap hose. It should be connected to the hardline just below. There was a short piece of hose from the test port fitting to the hardpipe.

You can just cut a of short length of hose to reconnect. No big deal, and no harm done being disconnected, nor is it required for the engine to run, it's just scavenging fumes from the gas tank.

 

thanks so kindly reply. I will reconnect the port.