Fig. 152: Monitor Description When Purge VSV Stuck Open
b. Purge VSV stuck closed
In operation D, the canister pressure sensor measures the EVAP system pressure. The 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-g (2.25 mmHg-
g) or more, the purge VSV is functioning normally. If the pressure does not increase, the ECM
interprets this as the purge VSV being stuck closed. The ECM illuminates the MIL and sets the
DTC (2 trip detection logic).
2008 Toyota Tundra
2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra