Sleep status
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.
When BCM is in sleep status, output from OUTPUT 1 and 2 transistors stops, with BCM entering a power-saving mode. OUTPUT (3 - 5) turn ON-OFF every 60 ms, and only input from light switch system is accepted.
Courtesy of NISSAN MOTOR CO., U.S.A.