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Fig. 169: Evaporative Emission System Operation Diagram The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the *: Typical value. C pressure Write down measured value as it will be used in leak check. minutes (1) D Purge VSV monitor Purge VSV opened and then EVAP system pressure measured 10 seconds E Second reference After second reference pressure measurement, leak check 60 seconds - Final check Atmospheric pressure measured and then monitoring result - (1) If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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