LIGHTING SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Headlight Swivel ECU Assembly

    • Receives various signals, calculates the target lighting angle, and actuates the headlight swivel motor.

    • When the headlight swivel ECU assembly detects a malfunction, the headlight swivel ECU assembly flashes the AFS OFF indicator light.
    Headlight Unit LH/RH Headlight Swivel Motor LH/RH Driven by the headlight swivel ECU assembly and the headlight swivel motor moves the low beam left or right to the angle calculated by the headlight swivel ECU assembly.

    Spiral Cable with Sensor Sub-assembly

    - Steering Sensor

    		 Outputs the steering angle.
    Main Body ECU (Multiplex Network Body ECU) Receives a HEAD position signal from the light control switch and transmits it to the headlight swivel ECU assembly.

    Brake Actuator Assembly

    - Skid Control ECU

    		 Receives speed sensor signals and transmits it to the headlight swivel ECU assembly.
    Airbag Sensor Assembly Outputs the yaw rate information.
    Headlight Dimmer Switch Assembly Light Control Switch Transmits a HEAD position signal to the main body ECU (multiplex network body ECU).
    Combination Meter Assembly AFS OFF Indicator Light

    • Lights up when AFS control is stopped by the headlight swivel main switch.

    • Flashes when the headlight swivel ECU assembly detects a malfunction.
    Headlight Swivel Main Switch Outputs an AFS OFF signal and transmits it to the headlight swivel ECU assembly.
    Back-up Light Switch Assembly*1 Outputs a back-up light on signal to the headlight swivel ECU assembly.
    ECM Receives the shift position signals from the park/neutral position switch assembly and transmits it to the headlight swivel ECU assembly.*2

    *1: Models with manual transaxle or multi-mode manual transaxle

    *2: Models with multidrive/continuously variable transaxle

  2. SYSTEM CONTROL


    1. Low Speed Control


      1. The headlight swivel ECU assembly calculates the swivel angle from the steering angle, vehicle speed and drives the headlight swivel motor on the side facing into the turn to illuminate the road ahead during cornering.

        Headlight Swivel Motor LH RH
        Driving Condition Right Turn 0° Fixed 0° to 10° to Right
        Left Turn 0° to 15° to Left 0° Fixed

    2. Medium-to-high Speed Control


      1. Based on the steering angle and vehicle speed, the headlight swivel ECU assembly calculates the swivel angle of the low beam headlights so that the headlights can illuminate the position which the vehicle will reach after 3 seconds, and drives both headlight swivel motors to illuminate the road ahead during cornering.

        Headlight Swivel Motor LH RH
        Driving Condition Right Turn 0° to 5° to Right 0° to 10° to Right
        Left Turn 0° to 15° to Left 0° to 7.5° Left

  3. DIAGNOSIS


    1. When the headlight swivel ECU assembly detects a malfunction in the intelligent adaptive front-lighting system (AFS), the headlight swivel ECU assembly blinks the AFS OFF indicator light. At the same time, Diagnostic Trouble Codes (DTCs) are stored in memory.

    2. The DTCs can be read using the Global TechStream (GTS). For details, refer to the Repair Manual.