WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Measuring Voltage Between Each Terminal And 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".