By law the DLC (Data Link Connector) has to be located within 18" of the steering column.
Some states test cars for pollution compliance by connecting a reader to the vehicle's OBD-II port. Your 1990 Corolla is exempt from OBD-II testing because you don't have an OBD-II port - they first came out in 2006.
The 2006 Toyota Corolla OBD 2 port is under dash at left, next to kick panel
OBD II port should be under the dash on the drivers side.
The 2006 Honda Civic OBD 2 port is under driver side dash next to center console
The 2006 Honda Civic OBD 2 port is under driver side dash next to center console
The 2006 Mini Cooper OBD 2 port is under driver side dash next to kick panel
1994 Toyota pickups do not have obd II they have obd I. There is a " diagnostic port " under the hood but its not of much use.
Should be OBD I, OBD II is 1996 and newer
A 1995 Bronco does not have an OBD-II port - OBD-II started on 1996 vehicle. 1995 Brocno would have OBD-I. The connector should be under the hood, on the inside wall of the driver's side fender near the firewall.
In a 2006 Kia Sedona, the OBD-II port is typically located under the dashboard on the driver's side. You can find it near the steering column, just above the brake pedal. It may be necessary to remove a small cover or panel to access the port.
The 1999 Acura TL OBD 2 port is to remove ashtray
The OBD II port on a 2006 Toyota Tacoma is typically located beneath the dashboard on the driver's side. It can be found near the steering column, just above the brake pedal. You may need to look up slightly to see it, as it is often tucked away behind a panel or cover.