I know the source, but uncertain what system it is part of. I have enclosed photos. The second is looking down right side of engine compartment of my 2002 GS300. The other is from under the car.
Can someone tell me the system this is, it apprears to be a straight forward hose replacement that as you go forward to the engine is only about 18" connector to connector.

thanks in advance

 

try and tell what it is by the fluid that's coming out?