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: CAN System (M/T Models) Check Sheet Results (Example)
Courtesy of NISSAN MOTOR CO., U.S.A.
NOTE:
If "NG" is displayed on "CAN COMM" for the diagnosed control unit, replace the control unit.