Daytime Light System Operation

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

With the lighting switch in the OFF or 1ST position (parking lamps ON), the BCM receives inputs requesting the headlights off. If the parking brake is released and the engine is running, the BCM then sends a signal, via the CAN communication lines, requesting the IPDM E/R to activate the daytime light system. The CPU located in the IPDM E/R controls the daytime light relay 1 coil, which when energized, directs power

from daytime light relay 1 terminal 3
to front combination lamp LH terminal 5,
through front combination lamp LH high beam terminal 6
to IPDM E/R terminal 55,
through 10A fuse (No. 35, located in IPDM E/R) and
through both de-energized headlamp high relays
to 10A fuse (No. 34, located in IPDM E/R),
through IPDM E/R terminal 56
to front combination lamp RH high beam terminal 6.

Ground is supplied

to front combination lamp RH terminal 5 and
to daytime light relay 1 terminal 4
through grounds E9, E15 (all models) and E24 (with MR20DE),
to daytime light relay 1 terminal 1
through IPDM E/R terminal 49.

With power and ground supplied, high beam headlamps illuminate at reduced intensity.