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Engine Controls - Self-Diagnostics: Introduction

To properly diagnose and repair this vehicle, follow DIAGNOSTIC STARTING POINT - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. If no Diagnostic Trouble Codes (DTC) are present and a no start condition exists, see BASIC DIAGNOSTIC PROCEDURES - 3.0L SATURN "L" SERIES article. If no DTCs are present and a driveability condition exists, see SYMPTOMS in TROUBLESHOOTING - NO CODES - 3.0L SATURN "L" SERIES article for diagnosis by symptom (i.e., ROUGH IDLE, ENGINE STALLS, etc.).

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