WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Wiring Diagram - MIL & Data Link Connector - EC-MIL/DL-01
Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Wiring Diagram - MIL & Data Link Connector - EC-MIL/DL-02