Engine Control System Tests W/Codes - Non-Turbo: Introduction: Notes

If no faults were found while performing basic diagnostic procedures in BASIC TESTING - NON-TURBO , proceed with self-diagnostics. If no Diagnostic Trouble Codes (DTCs) are present after entering self-diagnostics, proceed to TESTS W/O CODES - NON-TURBO article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).