Output Speed Sensor

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

The output speed sensor is installed to rear side of transmission case.

Courtesy of NISSAN NORTH AMERICA, INC.
The output speed sensor detects the revolution of the parking gear and emits a pulse signal. The pulse signal is transmitted to the TCM which converts it into vehicle speed.