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Self-Diagnostic System: Summary

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If no hard DTCs are present, and driveability symptoms or intermittent DTCs exist, attempt diagnosis by symptom, or by testing individual components related to system fault. See TROUBLE SHOOTING  and/or COMPONENT TESTS  . If no problem is found, verify proper electronic control system circuit operation.

NOTE: Always clear DTCs once repairs are complete. See CLEARING DIAGNOSTIC TROUBLE CODES  . Road test vehicle and retrieve DTCs to determine if complaint or DTC is repaired.
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