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 Vapor Pressure (FVP) sensor. Amount of engine vacuum is controlled by the EVAP Purge and Vent solenoid valves. If a specific amount of vacuum cannot be achieved or maintained, PCM will set DTC. Inspect above listed components for poor, loose or damage to terminal connections.