Component Description

The EVAP canister vent control valve (3) is located on the EVAP canister (2) 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.

Fig 1: Sectional View Of EVAP Canister Vent Control Valve

Courtesy of NISSAN MOTOR CO., U.S.A.

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 diagnoses.

• This illustration is a view from under vehicle
• EVAP control system pressure sensor (1)
  Fig 2: Identifying EVAP Control System Pressure Sensor, EVAP Canister And EVAP Canister Vent Control Valve

  Courtesy of NISSAN MOTOR CO., U.S.A.