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.

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

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  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


        • 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 indicators and buzzer.

  3. FUNCTION OF COMPONENTS

    Component Function
    Blind Spot Monitor Sensor

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

    • Illuminates or blinks the outer rear view mirror indicator on the outer rear view mirror assembly.

    • 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 switch operation signal is received from the combination meter assembly with the blind spot monitor function operating.

    • Dims the outer rear view mirror indicator on the outer rear view mirror assembly and blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly).

    • Turns on the blind spot monitor indicator on the blind spot monitor main switch (combination switch assembly) when the blind spot monitor main switch (combination switch assembly) is on.

    • Displays the RCTA icon on the multi-display assembly when the RCTA function is operating.

    Outer Rear View Mirror Assembly

    - Outer Rear View Mirror (Outer Rear View Mirror Indicator)

    		 Turns on or blinks the indicator based on a signal from the blind spot monitor sensor.
    Outer Mirror Control ECU Assembly Receives a signal from the blind spot monitor sensor and sends the signal to the outer rear view mirror indicator on the outer rear view mirror assembly.
    Blind Spot Monitor Main Switch (Combination Switch Assembly) Turns the blind spot monitor system on or off.
    RCTA Buzzer (Blind Spot Monitor Buzzer) Sounds based on a signal from the blind spot monitor sensor.

    Combination Meter Assembly


    • Multi-information Display

    • Sends a turn signal switch operation signal to the blind spot monitor sensor via CAN communication.

    • Display the state of the blind spot monitor system

    • 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 and dimmer signal to the blind spot monitor sensor via CAN communication.
    Brake Actuator Assembly (Skid Control ECU) Transmits a vehicle speed signal to the blind spot monitor sensor via CAN communication.
    ECM Sends a shift position signal (R) and HV flag signal 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.

    Airbag ECU Assembly

    - Yaw Rate Sensor

    		 Transmits the yaw rate signal to the blind spotmonitor sensor via CAN communication.

    • Rear Television Camera Assembly*1

    • Parking Assist ECU*2

    		 Receives the blind spot monitor sensor information via CAN communication and sends it to the multi-display assembly through the video signal cable.
    Multi-display assembly Receives the video signals from the television camera assembly and displays RCTA icon on the display panel.

    *1: w/ Parking Assist Monitor System

    *2: w/ Panoramic View Monitor System

  4. OPERATION DESCRIPTION


    1. Operation description of the blind spot monitor function


      1. Operation conditions


        • The blind spot monitor main switch (combination switch assembly) is on.

        • The shift lever is in except R.

        • 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 function indicates detection of a vehicle in the detection area when either condition is met:


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

        • When a vehicle is detected entering the detection area because it changed lanes.

      3. B00587JC05
        *a Within approximately 3.5 m (11.48 ft.) from Side of Vehicle
        *b Within approximately 0.5 m (1.64 ft.) from Side of Vehicle
        *c Within approximately 1 m (3.28 ft.) Forward of Rear Bumper
        *d Within approximately 3 m (9.84 ft.) Behind Rear Bumper
        *e Within approximately 3 m (9.84 ft.) to 60 m (196.86 ft.) from Rear Bumper
        B008IFR Detection Area (for Vehicle in Blind Spot)
        B008IZM Detection Area (for Rapidly Approaching Vehicle from Behind)

        Detection area

        Vehicles in the following areas can be detected:

    2. Operation description of the RCTA function


      1. Operation conditions:


        • The blind spot monitor main switch (combination switch assembly) 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:


        • A vehicle is approaching this vehicle from diagonally behind.

        • The vehicle speed is approximately 8 km/h (5 mph) to 28 km/h (18 mph).

      3. B00573YC04
        *a Vehicles in the following areas can be detected:
        *b Within approximately 5.5 to 20 m (18.04 to 65.62 ft.) from the side of the vehicle (detection area changes according to vehicle speed)
        *c Within approximately 6 m (19.69 ft.) behind the rear bumper

        Detection area

        Vehicles in the following areas can be detected:

  5. OPERATION OF OUTER REAR VIEW MIRROR INDICATOR AND RCTA BUZZER (BLIND SPOT MONITOR BUZZER)


    1. Initial check


      1. When the blind spot monitor main switch (combination switch assembly) is turned on with the engine switch on (IG), the outer rear view mirror indicator on each outer rear view mirror assembly illuminates for 3 seconds and the RCTA buzzer (blind spot monitor buzzer) sounds for 1 second.

      2. When the engine switch is turned from off to on (IG) with the blind spot monitor main switch (combination switch assembly) on, the outer rear view mirror indicator on each outer rear view mirror assembly illuminates for 3 seconds.

    2. 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.

        B005ANCE11

      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.

        B0058I6C18
        *a 0.125 seconds *b 2.5 seconds
        *c 0.1 seconds *d 0.4 seconds
        *e 2.3 seconds - -

  6. RCTA ICON OUTLINE


    1. If a vehicle approaching from the right or left at the rear of the vehicle is detected, the icon will illuminate on the multi-display.

    Figure 1. w/ Parking Assist Monitor System

    B005716C03
    *a Narrow rear view screen *b Wide Rear View Screen
    *c RCTA Icon - -

    Figure 2. w/ Panoramic View Monitor System

    B0058XLC06
    *a Narrow rear view screen *b Wide Rear View Screen
    *c Panoramic view and rear view screen *d RCTA Icon