System Description: Notes

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

The headlamp system for Canada vehicles contains a daytime light control unit. This unit activates the high beam headlamps at approximately half illumination whenever the engine is running. If the parking brake is applied before the engine is started, daytime lights will not be illuminated. The daytime lights will illuminate once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking brake is applied. If the daytime light control unit receives a ground signal from the generator, the daytime lights will not be illuminated. The daytime lights will illuminate once a battery positive voltage signal is sent to the daytime light control unit from the generator.

Power is supplied at all times:

through 15A fuse (No. 39, located in the fuse and fusible link box)
to daytime light control unit terminal 2 and
to lighting switch terminal 5.

Power is also supplied at all times:

through 15A fuse (No. 40, located in the fuse and fusible link box)
to daytime light control unit terminal 3 and
to lighting switch terminal 8.

With the ignition switch in the ON or START position, power is supplied:

through 10A fuse (No. 10, located in the fuse block [J/B])
to daytime light control unit terminal 12.

With the ignition switch in the START position, power is supplied:

through 10A fuse (No. 21, located in the fuse block [J/B])
to daytime light control unit terminal 1.

Ground is supplied to daytime light control unit terminal 9 through body grounds E7 and E37.