How do you read obd 1 on 1994 Toyota Paseo?

To read the OBD-I codes on a 1994 Toyota Paseo, you need to locate the diagnostic connector, typically found under the dashboard near the driver's side. Use a jumper wire to connect terminals TE1 and E1 on the connector. Then, turn the ignition key to the "ON" position without starting the engine; the check engine light will blink the trouble codes. Count the blinks to decipher the codes, which will indicate any issues with the vehicle's systems.