Section 4 (Engine Control System Tests W/Codes): Introduction: Notes
WARNING: This page is about a different car, the 1996 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
If no faults were found while performing BASIC TESTING , proceed with self-diagnostics. If no Diagnostic Trouble Codes (DTCs) are present after entering self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).