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The ECM on a 2003 Corolla is located directly under the center of the glove compartment. You can see the ECM if you lay on your back looking upward in the front passenger area.

If you remove the one screw on the right side of the glove box (when it is open) you can lift out the glove box and will be looking down on the ECM. By the way, this is all you need to do to access and change the cabin filter.

There are two round black plastic fasteners that hold a front cover over the plugs that go into the ECM. These fasteners are removed by gently prying them downward with a screwdriver. The fasteners don't have a "snap", rather they are plastic bolts with concentric indentations rather than a spiral (screw) pattern.

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13y ago

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