Trailer Hazard Lamp Operation
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
The trailer hazard lamps are controlled by the BCM. When the hazard switch is in the ON position, the BCM detects the hazard ON request. The BCM then sends a control signal to both trailer turn relays which send power to the trailer connector.