The Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor passes through vent hoses or tubes to a canister filled with charcoal.

The canister temporarily holds the vapor in the charcoal. The ECM will control the system in order to draw the gathered vapor into the combustion chambers during certain operating conditions. Engine manifold vacuum is used to draw the vapor into intake manifold.

Evaporative Emission Control System

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Schematic Diagrams

Schematic Diagram Canister The Canister is filled with charcoal and absorbs evaporated fuel vapor from the fuel tank. The gathered fuel vapor in canister is drawn into the intake man ...

See also:

Seat Belt Pretensioner (BPT). Description and Operation
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Knock Sensor (KS). Schematic Diagrams
Circuit Diagram ...

Canister Close Valve (CCV). Description and Operation
Description Canister Close Valve (CCV) is installed on the canister ventilation line. It seals evaporative emission control system by shutting the canister from the atmosphere when leakage d ...