Section 49 (Engine Controls - Self-Diagnostics): Summary
WARNING: This page is about a different car, the 2003 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
If no DTCs are present, and driveability symptoms exist, proceed to TROUBLE SHOOTING - NO-CODES article for diagnosis by symptom (i.e., rough idle, no start, etc.).