In the gas tank. I have 2001 Echo.
search for echo manual torrent
2001 Toyota Echo doesn't have a timing belt.
Go to autozone.com..Repair instructions.Look for serpentine belt.May be a routing image there.
Doubt it is different from the older model years, a diagram was posted on this website for an older model echo.
The 2002 Toyota Echo OBD 2 port is under driver side dash next to kick panel
go to dealer
i have a 2001 and it gets about 39-42 mpg
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under driver side dash/kick panel Stick your head where the driver's left knee would be, and you will see it (may need a flashlight).
In the red cover on the positive terminal of the battery.
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How to open hood on Toyota echo
There is an access panel in the trunk. Its very easy to change the bulb.
There is an access panel in the trunk, pull back the cover in the trunk and its easy from there.