WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - 4th Gear Signal (AT-4THSIG-01)
Courtesy of NISSAN MOTOR CO., U.S.A.
TCM terminals and data are reference value. Measured between each terminal and ground.
Fig 2: TCM Terminals & Data Reference Value Chart - 4th Gear Signal