System Description: Outline

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.

The auto light control system has an optical sensor inside it that detects outside brightness. When the lighting switch is in AUTO position, it automatically turns ON/OFF the parking lamps and the headlamps in accordance with ambient light. Sensitivity can be adjusted in four steps. For the details of the setting, Refer to "SETTING CHANGE FUNCTIONS ".

Optical sensor, power is supplied

from BCM (body control module) terminal 17
to optical sensor terminal 1.

Optical sensor, ground is supplied

to optical sensor terminal 3
through BCM terminal 18.

When ignition switch is turn to ON position, and

When outside brightness is darker than prescribed level, input is supplied

from optical sensor terminal 2
to BCM terminal 14.

The headlamps will then illuminate. For a description of headlamp operation, Refer to "SYSTEM DESCRIPTION ".