Component Description

The swirl control valve control vacuum check switch detects vacuum signal to the swirl control valve, and sends ON or OFF signal to the ECM.

When vacuum is supplied to the valve, the swirl control valve control vacuum check switch sends OFF signal to the ECM.

The swirl control valve control vacuum check switch is not used to control the engine system, it is used for on board diagnosis.

Fig 1: Identifying Swirl Control Vacuum Check Switch And Brake Fluid Reservoir

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

Fig 2: Identifying Swirl Control Vacuum Check Switch Components

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