Section 7 (Tests W/Codes): Summary
WARNING: This page is about a different car, the 1989 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
If no fault codes (or only pass codes) are present, proceed to TROUBLE SHOOTING (NO CODES) for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.).