WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Measuring Voltage Between TCM Terminal 25 Or 48
Courtesy of NISSAN MOTOR CO., U.S.A.
Measure voltage between each terminal and terminal 25 or 48 by following "TCM INSPECTION TABLE".