Suppose to be a sticker on the inside of the hood. If its missing you can find it in the repair manuals. Chilton, Hayes etc.
under the bonnet on the passenger side
1993 on Toyota corolla vacuum hose
A lean condition is too much air and not enough fuel The cause can be a fuel delivery problem,02 sensor,MAF sensor or a vacuum leak
02 sensor or cat
Toyota ae 91 4AF Vacuum hose diagram
try M-VACUUM DIAGRAMS search at yahoo.com under Toyota tercel vacuum. 91 to 94 are same
vacuum line diagram
Which of them? There are many of them.
Picture
Should be a vacuum hose diagram attached to the underside of the hood or nearby.
ECO (Economy) It is meant to help you drive economically. You will notice when you press the accelerator down hard the light comes on. This is showing you that you are wasting fuel. It is nothing more that a light that is detecting vacuum. The harder your accelerate the less vacuum and the light comes on. This is nothing new and was installed on cars in the 50s.
When making changes to a car, having a diagram can help make sure the correct changes are made. A vacuum diagram for a 1995 Toyota can be found in the vehicles maintenance manual.