System Description
LIGHTING (EXT): LIGHTING SYSTEM: SYSTEM DESCRIPTION
1. AUTOMATIC LIGHT CONTROL SYSTEM
When the light control switch is in the AUTO position, the automatic light control system detects ambient light levels and controls the low beam headlights, parking lights, taillights, side marker lights and license plate lights.
2. LIGHT AUTO TURN-OFF SYSTEM
The light auto turn-off system is used to prevent the exterior lights from being accidentally left on (low beam headlights, high beam headlights, front fog lights, taillights, parking lights, license plate lights and side marker lights).
* This system has the following functions.
3. DAYTIME RUNNING LIGHT SYSTEM
(a) The daytime running light system is designed to automatically illuminate the headlights (high-intensity parking lights), during the daytime to make the car more visible to other vehicles.
* There are 2 LED type parking light circuits in each headlight. One is for a conventional low-intensity parking light that illuminates with the taillights, and the other is for the high-intensity parking light that is used for the DRL system. These circuits are operated by the by the main body ECU (multiplex network body ECU).
* This system is enabled when the conditions given below are met (The headlight dimmer switch has DRL OFF function):
* Power switch on (IG)
* READY condition is received.
* Light control switch is in the tail or AUTO position (and the low beam headlights are not turned on via the automatic light control system).
* Parking brake switch off
* This system is enabled when the conditions given below are met (The headlight dimmer switch does not have DRL OFF function):
* Power switch on (IG)
* READY condition is received.
* Light control switch is in the off , tail or AUTO position (and the low beam headlights are not turned on via the automatic light control system).
* Parking brake switch off
4. LED HEADLIGHT SYSTEM
(a) 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 because of vibration.
(b) Function of Main Components
5. AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM
(a) General
* This system maintains the low beam headlights at a constant level while the vehicle is stopping.
* This system is controlled by the headlight leveling ECU assembly. The headlight leveling ECU assembly detects the vehicle posture via the rear height control sensor sub-assembly, and detects the vehicle speed via the combination meter assembly. The headlight leveling ECU assembly controls each headlight leveling motor based on these pieces of information in order to change the headlight reflector angle.
NOTICE:
* Initialize the rear height control sensor sub-assembly signal after the vehicle height changes due to replacement of the suspension or after operations as reinstallation or replacement of the rear height control sensor sub-assembly.
* When the headlight leveling ECU assembly is replaced, initialization is also necessary.
(b) Function of Main Components
6. DOOR MIRROR FOOT LIGHT SYSTEM
(a) General
* The door mirror foot light control consists primarily of the fade-in/fade-out function and timer illumination function.
* This control is controlled by the main body ECU (multiplex network body ECU).
(b) The door mirror foot light system has the following control functions:
