See related link, also note that the AC compressor is the bottom most item that the drive belt touches.
Inside the fuel (petrol) tank.
Under the dash, on the passangers side.
On top of the engine, but you have to remove the cover to see them.
If the AC stopped blowing air on your 2003 Toyota Echo, the blower fuse could be to blame. If the fuse is fine, it might be the blower resistor that needs to be replaced.
chain
The 2003 Toyota Echo takes 22" drivers side and 14" passenger side replacement windshield wiper blades.
108
when it breaks
3.6 litres
It is underneath
$1500 to $2000
There are none.