Engine Controls - Tests W/Codes - Except OBD-II: Summary: Notes

Download the full database via torrent (~1.1 TB) | Download Brad's custom LEMON patches

If no hard fault codes are present, driveability symptoms exist or intermittent codes exist, proceed to INTERMITTENTS text accompanying each test (as applicable).

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with self-diagnostics. If no fault codes are present after entering self-diagnostics, proceed to appropriate TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.

NOTE: To determine a common cause for a trouble code to be set, see DIAGNOSTIC TROUBLE CODE DEFINITIONS table.