CVT CONTROL SYSTEM: Secondary Speed Sensor

The secondary speed sensor is installed in the rear of transaxle assembly.
The secondary speed sensor detects the secondary pulley revolution speed and sends a signal to the TCM.
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 1: Secondary Speed Sensor Voltage Signal Waveform
Courtesy of NISSAN NORTH AMERICA, INC.