System Description - For USA

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 headlamp system is equipped with a daytime running light relay 1 that activates the low beam headlamps at approximately half illumination whenever the engine is operating and the lighting switch is in the OFF position. If the parking brake is applied before the engine is started the daytime running lights will not be illuminated. The daytime running lights will illuminate once the parking brake is released. With the lighting switch in the 2nd position the headlamps function the same as conventional light systems.

The BCM monitors inputs from the parking brake switch and the lighting switch to determine when to activate the daytime running light system. The BCM sends a daytime running light request to the IPDM E/R via the CAN communication lines.

The IPDM E/R grounds the daytime running light relay 1 which in turn, provides power to the ground side of the RH low beam lamp. Power flows backward through the RH low beam lamp to the IPDM E/R, through fuse 41, through fuse 40 and to the LH low beam lamp and on to ground. The low beam lamps are wired in series which causes them to illuminate at a reduced intensity.