System Description: Outline

WARNING: This page is about a different car, the 2017 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

BCM (body control module) controls various electrical components. It receives the information required from CAN communication and the signals received from each switch and sensor.
BCM has a combination switch reading function for reading the status of combination switches (light, turn signal, wiper and washer) in addition to functions for controlling the operation of various electrical components. It also has a signal transmission function for other systems, and a power consumption control function that reduces the power consumption with the ignition switch OFF.
BCM is equipped with a diagnosis function that operates with CONSULT and allows for various settings to be changed.