Exterior Lights System Description - Control/Function (2016)
Headlights Function
The headlights are controlled by the relay control module, based on B-CAN input signals from MICU.
Headlights Auto-OFF Function
Exterior lights automatic turn OFF energizes the exterior lights to be turned OFF automatically when the vehicle is in the OFF (LOCK) mode, driver's door is opened and closed during the exterior lights are turned OFF. Time for turning OFF the exterior lights can be set by the customizing function.
LED Headlight Fault Detection Function
The LED control unit sends the 10 Hz (duty 50 %) signal to the relay control module when the headlight is ON. If the relay control module receives the 5 Hz (duty 50 %) signal, the relay control module judges an LED assembly is faulty. If the relay control module receives other than 5 Hz or 10 Hz signal, the relay control module judges the LED control unit is faulty.
Turn Signal/Hazard Light Function
Wire break detection of the turn signal lights is performed by monitoring current value in combination with the feedback signal transmitted by the front turn signal lights. In case of an abnormality for either signal, it is registered as a wire break, which leads to an increased turn signal lighting frequency. 130 ms after ON/OFF change of the turn signal output, the feedback signal from the front turn signal and the current values are sampled three times every 10 ms. When the sampling of the feedback signal shows a discrepancy at all three samplings, this is registered as a wire break. When all three samplings coincide twice in a row, it is considered to be the normal condition. When the sampling of the current value is outside the threshold value range (1.25 to 1.67 A) at all three times, this is registered as a wire break. When all three values are within the threshold value range, it is considered to be the normal condition.
One-Push Turn Signal Light
When there is an input from the turn signal light switch to the MICU for approximately 40 ms to below approximately 1 second when the vehicle mode is set to ON, the MICU flashes the turn signal lights three times.
Fog Light Function
The fog lights are controlled by the relay control module, based on B-CAN input signals from MICU.
Daytime Running Lights Function
For daytime running light control, the relay module controls the LED control unit (low beam) based on the combination light switch signal, the parking brake signal, and the automatic lighting signal, and then turns on the light. When the combination light switch is in the AUTO or the PARKING position at the time of power ON mode, and the parking brake switch is turned off, the relay module transmits an output value to the LED control unit (low beam). The LED control unit (low beam) activates the lights during an output from 40 % to 70 %. When the combination light switch is in the ON position or the AUTO position, and the low beam output signal from the automatic lighting control unit is input to the relay control module, daytime running light control is not performed.
Automatic Lighting ON/OFF Control
Automatic lighting sensor output voltage reaches lighting delay time (about 5 seconds) after lighting illuminance from Off state, the parking lights, the side marker lights, the taillights, the license plate lights, and the headlights turn on. Automatic lighting sensor output voltage reaches turn off delay time (about 5 seconds) after off illuminance from lighting state, and the parking lights and the headlights turn off.
With automatic wiper
Without automatic wiper
With automatic wiper
Wiper Linked Mode (With automatic wiper)
When the wiper switch is in a position other than OFF, the automatic lighting/rain sensor counts and records the wiper motor ON to OFF signal (edge count) within 20 seconds from the wiper control unit. After a total of 4 counts, it switches to wiper linked mode and turns on the headlights and the position lights. The ON/OFF signals at the time of windshield washer operation are not counted. When an edge count is received for 30 seconds or longer, the count is reduced by 1, and shifting to normal mode is done when the count reaches 0. Return to normal mode also is done when the vehicle is stopped and the respective switch is set to OFF.
Warning Function (With automatic wiper)
The automatic lighting/rain sensor sends an indicator signal to the gauge control module in case of failure of the automatic lighting sensor or when the signal sent from the MICU by B-CAN communication is abnormal.
Interior Lights Brightness Change Control (With automatic wiper)
Regardless of the AUTO position of the combination light switch, automatic lighting control unit controls brightness for noon brightness or night brightness. The automatic lighting control unit sends the signal for control to gauge control module with B-CAN line.
Sensitivity Adjustment Function
Sensitivity adjustment function of automatic lighting system can be customized with the HDS and gauge control module. You can select the customized timing from 5 types (Min, Lo, Mid, Hi, Max) sensitivity. The customization information can be stored after receiving a remote ID signal (DRIVER 1 or DRIVER 2) from the MICU.