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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 891 (Engine Control System (Diagnostic Codes & Symptom Tests)) >> DTC/Circuit Diagnosis >> DTC P0447: EVAP Canister Vent Control Valve >> Component Description

Component Description

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.

This solenoid valve responds to signals from the ECM. When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.

This solenoid valve is used only for diagnosis, and usually remains opened.

When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System diagnosis.

Fig 1: Identifying EVAP Canister Vent Control Valve Components
G08690626Courtesy of NISSAN NORTH AMERICA, INC.
Fig 2: Identifying EVAP Canister, Vent Control Valve, EVAP Control System Pressure Sensor And Rear Suspension Member
G08690627Courtesy of NISSAN NORTH AMERICA, INC.