Component Description

The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.

Fig 1: Identifying EVAP Control System Pressure Sensor

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

Fig 2: Output Voltage/Pressure Graph

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