System Description

Fuel evaporative system operation is monitored by PCM. Engine vacuum is applied to system and monitored for leakage. PCM monitors vacuum in EVAP system with Fuel Tank Pressure sensor. Amount of engine vacuum is controlled by the EVAP Purge and Vent solenoids. If a specific amount of vacuum cannot be achieved or maintained, PCM will set DTC. Inspect above listed components for damage or poor connection.