Symptom Diagnosis

When a diagnostic code cannot be confirmed or problem cannot be confirmed in BASIC DIAGNOSTIC PROCEDURES , find basic symptom. For example, vehicle will not start. Appropriate heading matching vehicle symptom is DOES NOT START . Listed under DOES NOT START are more specific conditions. Find specific condition which best describes vehicle malfunction. Perform checks in order given. DO NOT skip steps.

NOTE: Even if a diagnostic code is not set, this article may refer you to a test procedure for a specific diagnostic code in SELF-DIAGNOSTICS article.