How to Troubleshoot a Toyota Celica GT Check Engine Light
- 1). Pull down on the fuse-panel cover with your fingers to remove it and set it aside.
- 2). Plug the OBD scan tool plug into the OBD access port to the left of the fuse panel.
- 3). Turn the ignition key to the "II" position and turn on the OBD scan tool.
- 4). Wait for the scan tool to display "OK" on the screen and then shut off the ignition.
- 5). Press "Menu" on the scan tool and scroll to the "Stored Codes" menu. Then select "Stored Codes" and reference your GT's service manual to translate the fault codes.
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