Es

2. Purge VSV stuck closed

In operation D, the canister pressure sensor measures the EVAP (Evaporative Emission) system pressure. Pressure measurement for the purge VSV monitor is begun when the purge VSV is turned ON (open) after the EVAP leak check. When the measured pressure indicates an increase of 0.3 kPa (2.25 mmHg) or more, the purge VSV is functioning normally. If the pressure does not increase, the ECM interprets this as the being stuck closed. The ECM illuminates the MIL and sets the DTC (2 trip detection logic).

EVAP Pressure

During Purge Flow Monitor:

Purge VSV

Vent Valve

EVAP Pressure

Open

Monitor

ON|Closed)|

Malfunction

Monitor

Monitor

Monitor

A071563E03

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