AUTOMATIC REAR FLASHING HAZARD LIGHTS SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Blind Spot Monitor Sensor LH/RH

    • Outputs radar from the blind spot monitor sensor to the blind spot sensor detection area, uses the reflected radar for detecting the presence of a vehicle, the vehicle-to-vehicle distance, and the relative speed, and then sends this information to the built-in signal processing circuit.

    • Determines the possibility of a collision and sends ARFHL system operation request signals to the combination meter assembly.
    Combination Meter Assembly

    • Displays a message on the multi-information display according to an ARFHL system operation request signal from the blind spot monitor sensor RH.

    • Flashes each turn signal light according to an ARFHL system operation request signal from the blind spot monitor sensor RH.

    • When a malfunction is detected in the blind spot monitor sensors or the blind spot monitor sensors determine that control is not possible, the master warning indicator illuminates and a message is displayed on the multi-information display to warn the driver.

    • Changes the blinking condition of each rear turn signal from sequential blinking to all LED simultaneous blinking according to ARFHL system operation request signal from the blind spot monitor sensor RH.
    Steering Sensor Sends the steering angle signal to the blind spot monitor sensor RH.
    Yawrate Sensor Sends yawrate information to the blind spot monitor sensor RH.
    Hybrid Vehicle Control ECU Assembly

    • Sends the shift position signal to the blind spot monitor sensor RH.

    • Sends the brake operation signal to the blind spot monitor sensor RH.
    Skid Control ECU Assembly Sends the vehicle speed signal to the blind spot monitor sensor RH.

    Headlight Assembly LH/RH


    • Front Turn Signal Light LH/RH

    		 Flashes according to a signal from the combination meter assembly.

    Outer Rear View Mirror Assembly LH/RH


    • Side Turn Signal Light LH/RH

    Rear Combination Light Assembly LH/RH


    • Rear Turn Signal Light LH/RH

    • Flashes according to a signal from the combination meter assembly.

    • Changes the blinking condition of each rear turn signal from sequential blinking to all LED simultaneous blinking according to ARFHL system operation request signals.

    Rear Light Assembly LH/RH


    • Rear Turn Signal Light LH/RH
    Central Gateway ECU (Network Gateway ECU) Relays the signal between the CAN communication buses.
    DLC3 The Global TechStream (GTS) can be connected to read the Diagnostic Trouble Codes (DTCs) of malfunctions.

  2. OPERATING CONDITION


    1. The ARFHL system operates when all of the following conditions are met:


      1. The shift position is other than R.

      2. The vehicle speed is approximately 0 km/h or more.

      3. A braking operation is performed when the vehicle speed is approximately 10 km/h (6 mph) or higher.

      4. The relative speed in relation to the vehicle to the rear is from approximately 30 km/h (19 mph) to approximately 100 km/h (62 mph).

  3. SYSTEM CONTROL


    1. Detection Area


      1. The distance from the vehicle to the rear traveling in the same lane, the relative speed and the direction are detected, and the possibility of a rear-end collision occurring is determined.

        B003H08C01
        *a This Vehicle - -
        B003GO4 Vehicle Speed (Very Fast) B003GI6 Vehicle Speed (Slow)

    2. If it is determined that there is a high possibility of a rear-end collision, the ARFHL system rapidly flashes the Hazard lights to warn the vehicle to the rear. The following message is also displayed on the multi-information display to notify the driver that a vehicle is approaching from the rear.

      Condition Multi-information Display
      The ARFHL system is operating. Rear Traffic Approaching

  4. DIAGNOSIS


    1. In order to make system inspections easier to perform, a diagnosis function is used in consideration of serviceability. The DTCs of malfunctioning parts can be read by connecting the Global TechStream (GTS). Refer to the Repair Manual for details.