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Home >> Toyota >> 2006 >> Camry Solara SLE, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (3MZ-FE) >> SFI System >> EVAP System >> Monitor Description >> LEV II EVAP Monitor Process
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LEV II EVAP Monitor Process

Fig 1: Identifying LEV II EVAP Monitor Process
G04382609Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Sequence Operation Description
1 Fuel vapor measurement EVAP VSV is turned OFF (closed) and EVAP pressure is measured. If EVAP pressure is not stable, EVAP monitor is cancelled to prevent inaccurate monitor.
2 Vacuum introduction EVAP VSV is turned ON (open) and CCV is truned ON (closed). As a result, intake manifold pressure (vacuum) is introlduced to EVAP system.
3 EVAP leak check EVAP VSV is turned OFF (closed) to seal EVAP system. EVAP pressure increase is measure for 5 seconds when EVAP pressure is -20 mmHg and -17 mmHg. If increase is large, ECM concludes EVAP system has a leak.
4 Restore CCV is turned OFF (open) to finish EVAP Monitor