Component Tests and General Diagnostics

SYSTEM INSPECTION

NOTE: Excessive fuel tank pressure could be caused by the fuel cap and does not necessarily indicate a concern with the evaporative emission system components.

^ Visually inspect the components of the Evaporative Emission (EVAP) system.
- Fuel odor or leakage.
- Damaged vacuum or fuel vapor lines.
- Loose vapor line connections.
- Discharged battery.
- Damaged Connectors.
- Damaged air flow meter.
- Damaged solenoid.

^ Exercise the wiring and connector for the (CANP) solenoid. Check the throttle body, air flow meter, and the Powertrain Control Module (PCM) for looseness, corrosion, damage, or other problems.

^ Check the fuel tank, fuel vapor lines, the vacuum lines, and the connections for looseness, pinching, leakage, damage or other obvious causes for malfunction.

^ If all checks are OK, proceed to the pinpoint tests. Pinpoint Tests