In 1983, Toyota eliminated the Corona and replaced it with the new Camry. The Camry was a front-wheel drive vehicle, unlike the Corona, which was rear-wheel drive. The original Camry came fitted with a 2.0-liter engine that produced 92 horsepower. The 2003 Camry also came standard with a 2.4-liter in-line four-cylinder engine that produced 157 horsepower and had an optional 3.0-liter V-6 that produced 210 horsepower. The standardization of vehicle computer systems to Onboard Diagnostics-II in 1996, brought about a change in vehicle diagnostics. OBD-II diagnostics allow a user to plug in a simple scanner into the OBD system to check the engine light code in the 2003 Camry.
Open the driver's door and adjust the seat back as far as it goes.
Look beneath the Camry's dashboard, directly under the steering wheel, and locate the OBD-II port. The connector has the same shape as the plug on the end of the OBD-II scanner.
Plug the connector on the end of the OBD-II scanner into the OBD-II port on the Camry.
Insert the key into the ignition of the Camry and turn the key to the "Run" position, but do not start the vehicle.
Press the "Scan" or "Read" button on the OBD-II scanner and observe as the scanner connects to the vehicle.
Notate all of the codes the OBD-II scanner displays. The codes display as a "P" with four numbers following, such as "P0420." Some scanners may even display a basic systems failure on the screen as well, such as "Small Evap Leak."
Turn the ignition to the "Off" position and disconnect the OBD-II scanner from the OBD-II port on the Camry.
