CVT CONTROL SYSTEM: Secondary Pressure Sensor

The secondary pressure sensor (1) is installed to control valve.
The secondary pressure sensor detects the pressure applied to the secondary pulley.

Fig 1: Identifying Secondary Pressure Sensor
Courtesy of NISSAN NORTH AMERICA, INC.
When pressure is applied to the ceramic device in the secondary pressure sensor, the ceramic device is deformed, resulting in voltage change. TCM evaluates the secondary pressure from its voltage change. Voltage is increased along with pressure increase.

Fig 2: Secondary Pressure Sensor Circuit With Voltage And Oil Pressure Characteristics
Courtesy of NISSAN NORTH AMERICA, INC.