The check engine light is on and I want to diagnose the codes. This is 1993 Civic 1.5L 16 valve. I searched on the forums and am told that there is a switch to find under the glovebox. I cannot find any such thing. Does anyone have a photo or diagram? It is unclear what it looks like and where under the glovebox it should be. It is next to the passenger door? Is it toward the firewall?