LANE DEPARTURE ALERT SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Components Function
    Combination Meter Assembly LDA Indicator Light Illuminates or turns off in accordance with signals from the lane departure warning camera.
    Multi-information Display

    • By selecting the driving assist system tab, the system control status can be displayed.

    • Displays a warning message and white lines to inform or warn the driver of the system condition in accordance with signals from the lane departure warning camera.
    Buzzer Sounds to warn the driver of the system condition in accordance with signals from the lane departure warning camera.
    Lane Departure Warning Camera

    • Captures the road view ahead of the vehicle and detects lane markers on the driving lane, and calculates the radius to the center of the lane, lane width, distance from markers and heading angle deviation.

    • Controls the lane departure alert system.

    • Transmits the indicator light illumination request signal, multi-information display indication request signal, and buzzer sound request signal to the combination meter assembly.
    Driving Support ECU Assembly

    • Sends the LDA main switch status to the lane departure warning camera.

    • Sends the status of buzzer warning for the pre-crash safety system to the lane departure warning camera.
    EV Control ECU Transmits the reverse signal to the lane departure warning camera.
    Skid Control ECU Sends a vehicle speed signal from the speed sensor to the lane departure warning camera.
    Steering Pad Switch Assembly LDA Main Switch Detects an on/off status of the system and transmits a signal to the driving support ECU assembly.
    Headlight Dimmer Switch Assembly Transmits a turn signal command to the combination meter assembly.
    Airbag ECU Assembly Yaw Rate Sensor Detects yaw rate and transmits a signal to the lane departure warning camera.
    Speed Sensor Transmits a vehicle speed signal to the skid control ECU Assembly.
    Network Gateway ECU Relays and transmits each CAN communication data signal.

  2. OPERATING CONDITION


    1. Operating Conditions of Lane Departure Alert System

      Operation Condition
      Operating/Resume

      The lane departure warning function is activated when all of the following conditions are met:


      • The LDA main switch is on. (When the LDA main switch is pressed to turn on the lane departure alert system, the LDA indicator light illuminates.)

      • The vehicle speed is approximately 50 km/h (32 mph) or more.

      • Lane markers are detected.

      • No turn signal command is detected.

      • System malfunction is not detected.
      Suspended

      The lane departure alert system is suspended when any one of the following conditions is met:


      • The vehicle speed is less than approximately 50 km/h (32 mph).

      • A turn signal command is detected.

      • No lane markers are detected.

      • Immediately after the lane departure warning is activated.
      Canceled

      The lane departure alert system is stopped when any one of the following conditions is met:


      • The LDA main switch is off.

      • The lane departure alert system is malfunctioning.

      • The temperature of the lane departure warning camera is abnormal.

      The lane departure alert system resumes when the following conditions are met:


      • The conditions to start operation listed above returns to are satisfied.

      • The lane departure alert system condition returns to normal.

      • The power switch is turned off and on (IG) again to ensure normal operation, after the lane departure alert system has been stopped by a system malfunction.

  3. DIAGNOSIS


    1. If a malfunction is detected in the lane departure alert system, the lane departure warning camera cancels the lane departure alert system, turns off the LDA indicator light, illuminates the master warning light, sounds the buzzer in the combination meter assembly, and displays a message on the multi-information display to inform the driver of the malfunction.

    2. At the same time, the malfunction is stored in memory as a Diagnostic Trouble Code (DTC). When a Global TechStream (GTS) is connected to the DLC3, the DTC can be read. For details, refer to the Repair Manual.