Engine Controls - Self-Diagnostics: Summary

If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, go to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - 2.2L ION article. If no DTCs are present and a driveability condition exists, go to TROUBLE SHOOTING - NO CODES - 2.2L ION article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).