CVT CONTROL SYSTEM: Secondary Speed Sensor

The secondary speed sensor is installed to side cover of transaxle.
The secondary speed sensor detects secondary pulley speed.

Fig 1: Identifying Secondary Speed Sensor
Courtesy of NISSAN NORTH AMERICA, INC.
The secondary speed sensor generates an ON-OFF pulse signal according to the rotating body speed. TCM judges the rotating body speed from the pulse signal.

Fig 2: Secondary Speed Sensor Operation Diagram
Courtesy of NISSAN NORTH AMERICA, INC.