Flow of Diagnosis

Inspection and Verification
1. Verify that the concern is with the Evaporative Emission (EVAP) system.
2. Inspect to determine if any of the following mechanical concerns apply:

VISUAL INSPECTION CHART
Mechanical
- Improperly installed fuel filler cap
- Loose or disconnected components
- Damaged EVAP canister or vent solenoid

3. If the concern remains after the inspection, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures