LIGHTING (EXT) LIGHTING SYSTEM SYSTEM DESCRIPTION

LIGHT AUTO TURN-OFF SYSTEM (w/ Light Auto Turn-off System)

The light auto turn-off system is used to prevent the exterior lights from being accidentally left on (headlights, front fog lights, taillights, clearance lights and license plate lights).

When all of the following conditions are met, the exterior lights turn off:

The ignition switch is turned off.

The headlights, front fog lights or taillights, clearance lights and license plate lights are on.

The driver door is opened.

DAYTIME RUNNING LIGHT SYSTEM (w/ Daytime Running Light)

The daytime running light system is designed to automatically illuminate the daytime running lights during the daytime to make the vehicle more visible to other vehicles.

This system is controlled by the main body ECU (multiplex network body ECU).

This system is enabled when the following conditions are met:

The ignition switch is ON.

The engine speed signal is input (engine is running).

The parking brake switch is off.

LED HEADLIGHT SYSTEM (for LED Headlight)

General

LED headlights are used to provide efficient, maintenance free lighting. Compared to halogen or HID headlights, even if an LED headlight is used for a long time, the reduction of brightness over its lifetime is less. In addition, there is no possibility of an LED having an open circuit caused by vibration.

Function of Main Components

Component	Outline
Light Control ECU	· Turns on the LEDs immediately when the light control switch is turned to the head position. · Regulates the current flowing into the LEDs to a specified level to prevent the light from getting brighter and dimmer due to voltage variation. · Transmits a malfunction signal to the main body ECU (multiplex network body ECU) when a malfunction occurs in the LED headlight system.
Combination Meter Assembly	Displays a warning message to inform the driver when the light control ECU detects a malfunction in this system.
Main Body ECU (Multiplex Network Body ECU)	· Receives a malfunction signal from the light control ECU when a malfunction occurs in the LED headlight system, and transmits the signal to the combination meter assembly. · Stores Diagnostic Trouble Codes (DTCs) when a system malfunctions.