Function Explanation (DTC Detection Outline)
WARNING: This page is about a different variant/trim than selected.
- To monitor the purge flow while the engine is in boost operation, the PCM closes the purge solenoid valve and CV solenoid valve and seals the fuel tank. Then, the evaporative gas from the fuel tank is introduced upstream of the dynamic pressure turbo by the venturi effect of the ejector. The pressure in the fuel tank decreases because the purge solenoid valve opens and the evaporative gas flows. Variation in the fuel tank pressure is measured by the fuel tank pressure sensor. If the pressure in the fuel tank does not decrease to the target pressure even though the integrated target purge flow amount is a certain value or more, the PCM determines that there is no purge flow during boost and stores a pending code. If this condition occurs in 2 successive drive cycles, the PCM determines the malfunction and stores the DTC.