BLIND SPOT MONITOR SYSTEM SYSTEM DESCRIPTION


  1. CAN COMMUNICATION SYSTEM


    1. The blind spot monitor system uses CAN communication to transmit data between the right and left blind spot monitor sensors and each ECU.

    2. If there is a problem in the CAN communication, the right and left blind spot monitor sensors output a CAN communication malfunction DTC.


    3. Each CAN communication line has a particular length and route. Therefore, emergency repair using bypass wiring, etc. is not possible.


  2. GENERAL


    1. The blind spot monitor system has the blind spot monitor function and RCTA function.


      1. Blind spot monitor function


        • The blind spot monitor function is a function that assists the driver in making the decision to change lanes. The function uses quasi-millimeter wave radar to detect vehicles that are traveling in an adjacent lane in the area that is not reflected in the outer rear view mirror assembly. The function advises the driver of the existence of a vehicle by illuminating the outer rear view mirror indicator on the outer rear view mirror assembly.

        • If the turn signal switch is operated while the outer rear view mirror indicator on an outer rear view mirror assembly is illuminated, the indicator starts blinking to give additional warning to the driver.

      2. RCTA function (w/ RCTA)


        • The RCTA function is a function that informs the driver of an approaching vehicle from diagonally behind. The function uses quasi-millimeter wave radar to detect the positions of and relative speed to a vehicle. When the function determines that a vehicle is approaching this vehicle, this function informs the driver of it using the outer rear view mirror indicators and blind spot monitor buzzer.

  3. FUNCTION OF COMPONENTS

    Component Function
    Blind Spot Monitor Sensor

    • Consists of a 24 GHz radar module and an integrated processing module.

    • Illuminates the outer rear view mirror indicator on the outer rear view mirror assembly when a vehicle is present in the blind spot area.

    • Sounds the RCTA buzzer (blind spot monitor buzzer) when the RCTA function is operating.

    • Changes the outer rear view mirror indicator on the outer rear view mirror assembly from illuminated to blinking when a turn signal is received from the combination meter assembly.

    • Dims the outer rear view mirror indicator on the outer rear view mirror assembly.
    Outer Mirror (Outer Rear View Mirror Indicator) Turns on or blinks the indicator based on a signal from the blind spot monitor sensor.
    Blind Spot Monitor Main Switch (Steering Pad Switch Assembly)

    • Turns the blind spot monitor system on or off.

    • Informs the state of the blind spot monitor system by illuminating the blind spot monitor indicator.
    RCTA Buzzer (Blind Spot Monitor Buzzer) (w/ RCTA) Sounds based on a signal from the blind spot monitor sensor.
    Combination Meter Assembly (Multi-information Display)

    • Sends the turn signal state from the headlight dimmer switch assembly (turn signal light switch) to the blind spot monitor sensor via CAN communication.

    • Displays an error message on the multi-information display if the blind spot monitor detects a malfunction while it is operating.
    Main Body ECU (Multiplex Network Body ECU) Sends the destination information to the blind spot monitor sensor via CAN communication.
    Skid Control ECU (Brake Actuator Assembly) Sends a vehicle speed signal to the blind spot monitor sensor via CAN communication.
    ECM Sends shift position signal (R) and HV flag to the blind spot monitor sensor via CAN communication.
    Spiral with Sensor Cable Sub-assembly Detects the angle of the steering wheel and sends the resulting signals to the blind spot monitor sensor via CAN communication.

  4. OPERATION DESCRIPTION


    1. Operation conditions of the blind spot monitor system


      • The blind spot monitor system is on.

      • Vehicle speed is more than approximately 16 km/h (10 mph).

    2. Conditions in which a sensor can detect a vehicle

      The blind spot monitor system indicates detection of a vehicle in the detection area when either condition is met:


      1. When a vehicle is detected in an adjacent lane overtaking this vehicle.

      2. When another vehicle is detected entering the detection area because it changed lanes.

    3. B002BPRE02
      Text in Illustration
      *a Vehicles in the following areas can be detected:
      *b Within approximately 3.5 m (11.49 ft.) behind the rear bumper
      *c Within approximately 3 m (9.84 ft.) forward of the rear bumper
      *d Within approximately 1 m (3.29 ft.) from the side of the vehicle

      Detection area

      Vehicles in the following areas can be detected:

    4. Operation description of the RCTA function (w/ RCTA)


      1. Operation conditions:


        • The blind spot monitor system is on.

        • The shift lever is in R.

        • The vehicle speed is less than approximately 8 km/h (5 mph).

      2. Conditions in which a sensor can detect a vehicle

        The RCTA function indicates detection of a vehicle in the detection area when both conditions are met:


        • vehicle is approaching this vehicle from diagonally behind.

        • The vehicle speed is approximately 8 km/h (5 mph) to 28 km/h (17 mph).

    5. B002B96E08
      Text in Illustration
      *a Vehicles in the following areas can be detected:
      *b Within Approximately 5.5 to 20 m (18.05 to 65.62 ft.) from Side of Vehicle (detection area changes according to vehicle speed)
      *c Within Approximately 6 m (19.69 ft.) behind Rear Bumper

      Detection area

  5. OPERATION OF OUTER REAR VIEW MIRROR INDICATOR ON OUTER REAR VIEW MIRROR ASSEMBLY


    1. Initial check


      1. When the blind spot monitor system is turned on with the power switch on (IG), the outer rear view mirror indicators on the outer rear view mirror assembly illuminate for 3 seconds and the RCTA buzzer (blind spot monitor buzzer) sounds for 1 second.

      2. When the power switch is turned from off to on (IG) with the blind spot monitor system on, the outer rear view mirror indicators on the outer rear view mirror assembly illuminate for 3 seconds.

    2. B002B6WE01

      Operation for each function


      1. Operation for blind spot monitor function


        • When a sensor detects a vehicle in the blind spot area, the outer rear view mirror indicator on the outer rear view mirror assembly illuminates.

        • While the sensor is detecting a vehicle in the detection area and the indicator is illuminated, if the turn signal switch is operated, the outer rear view mirror indicator on the outer rear view mirror assembly starts blinking as shown in the illustration.

      2. Operation for RCTA function


        • When all of the operation conditions for the RCTA function are met, the outer rear view mirror indicators on the outer rear view mirror assembly blink for 2.5 seconds and the RCTA buzzer (blind spot monitor buzzer) sounds for 2.3 seconds as shown in the illustration.

          B002BCNE09
          Text in Illustration
          *a 0.125 Seconds *b 2.5 Seconds
          *c 0.1 Seconds *d 0.4 Seconds
          *e 2.3 Seconds - -