It is the drain for air conditioning condensation. I was going to say heater core drain for when it springs a leak or [goes bad]. Is there two of these hoses in different locations or dose one serve both purposes?
Under the hood in a big black bulky fusebox.
It is the black pipe sticking out under the AC accumulator (large cylindrical object) bracket on the passenger side of the firewall.It is the black pipe sticking out under the AC accumulator (large cylindrical object) bracket on the passenger side of the firewall.
it looks to me on mine that mine is in the middle of the back window u should see a little black think sticking up inside ur car in the back window.
Just to the right of the throttle pedal, under the most likely black plastic cover up towards the firewall.
Unfortunately, the easiest way to change the hose (firewall connections) is from under the car. If your Achieva has the dual hose with the black valve across both lines, make sure you go to the dealer for the replacement. It's important for proper operation. Replacing with regular heater hose will cause problems down the road.
There are two little black circle things, right above the licence plate, that turn and then they will drop down. Once you do that you'll see. I don't know what things are called, but I did just do this and it was easy.
Viewed from the engine compartment, the blower motor is behind the engine on the firewall, towards the center of the car. It is usually black and has two larger wires running to it, one purple and one black.
Behind the accumulator sticking out from the firewall about 3/4" on the passengers side. It is a little black stub. Really hard to see but you can get to it from up top if you are flexible.
it is located slightly towards the driver side on the firewall inside the engine compartment. it has a black cap covering it. ti is clearly in view and easy to access.
While facing the engine, the filter is located left hand side of the firewall. it's black, cylindrical w/ 2 hoses sticking out of it. Very easy to locate and replace.
not exactly sure for your year but there should be one near the firewall toward the middle it should have a yellow loop it its missing then there will be a black tube sticking out look near the egr valve in the back of the engine.
The fan control relay is located on the upper right side (passenger side) of the firewall in the engine compartment. There are 2 grey relays and 1 black relay there together. The other grey relay controls the A/C compressor. I can't recall which is which!