WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
Rear power slide glass switch is located in the overhead console.
Courtesy of NISSAN NORTH AMERICA, INC.
Rear power slide glass transmits OPEN/CLOSE signal to the rear power slide glass motor.