Section 6 (Engine Controls - Basic Diagnostic Procedures - 6.0L Diesel): Introduction
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Diagnosis starts in SYMPTOM DIAGNOSIS under SYMPTOMS in TROUBLE SHOOTING - NO CODES - 6.0L DIESEL article. From SYMPTOM DIAGNOSIS, the technician will be guided through the appropriate diagnostic procedures.
The first step in diagnosing any driveability problem is verifying the symptom(s) with a test drive under the conditions the problem reportedly occurred.