INTUITIVE PARKING ASSIST SYSTEM DETAILS


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Clearance Warning ECU Assembly

    • Judges the approximate distance between the vehicle and an obstacle based on signals from the No. 1 ultrasonic sensors. Output signals are sent to the combination meter assembly and radio and display receiver assembly.

    • Sounds the No. 1 clearance warning buzzer.
    No. 1 Ultrasonic Sensor (6) Detects the distance between the vehicle and an obstacle.
    No. 1 Clearance Warning Buzzer Sounds to inform the driver according to the distance to the obstacle.

    Combination Meter Assembly

    - Multi-information Display

    • Displays the location of the obstacle and the approximate distance between the vehicle and the obstacle.

    • Displays an indication of a malfunction or freezing of a No. 1 ultrasonic sensor to inform the driver.
    Radio and Display Receiver Assembly

    • Displays the location of an obstacle and the approximate distance between the vehicle and the obstacle.

    • Displays an indication of a malfunction or freezing of a No. 1 ultrasonic sensor to inform the driver.

    • The sound volume can be chosen on the setup screen for the intuitive parking assist system.

    • Transmits the setup signal for the intuitive parking assist system to the clearance warning ECU assembly.
    Back Sonar or Clearance Sonar Switch Assembly Operating this switch allows the operation of the intuitive parking assist-sensor system to be enabled or disabled.
    Air Conditioning Amplifier Assembly Sends outside temperature information to the clearance warning ECU assembly to allow distance compensation for the No. 1 ultrasonic sensors.
    Main Body ECU (Multiplex Network Body ECU) Sends model destination information (information to indicate the market the vehicle was built for) to the clearance warning ECU assembly.
    Power Management Control ECU Transmits the shift position signals to the clearance warning ECU assembly.

  2. OPERATING CONDITION


    1. The operating condition of each sensor differs according to its installed position as shown in the table below:

      Installation Position Operating Condition
      Front Corner

      • Power switch is on (IG).

      • System is activated.

      • Shift lever is in a position other than P and R.

      • Vehicle speed is approximately 10 km/h (6 mph) or less.

      • Power switch is on (IG).

      • System is activated.

      • Shift lever is in R.
      Rear Corner

      • Power switch is on (IG).

      • System is activated.

      • Shift lever is in R.
      Rear Center

      • Power switch is on (IG).

      • System is activated.

      • Shift lever is in R.

  3. CONSTRUCTION


    1. No. 1 Ultrasonic Sensor


      1. The No. 1 ultrasonic sensors consist of a microphone and a circuit portion that transmits and receives ultrasonic waves.

      2. The circuit portion is filled with urethane to prevent water from entering.

        A01HWXLE01
        Text in Illustration
        *1 Circuit Portion *2 Microphone
        *a A-A Cross Section - -

  4. OPERATION


    1. No. 1 Clearance Warning Buzzer


      1. Depending on the detection distance and the detection area, the sound pattern of the No. 1 clearance warning buzzer will vary.

        Detection Area

        Detection Distance

        (mm (in.))

        		 Buzzer Sound Pattern

        On

        (msec.)

        Off

        (msec.)
        Front Corner Long 500 +/- 50 to 400 +/- 40 (19.7 +/- 2.0 to 15.7 +/- 1.6) 150 +/- 15 150 +/- 15
        Middle 400 +/- 40 to 300 +/- 30 (15.7 +/- 1.6 to 11.8 +/- 1.2) 75 +/- 7.5 75 +/- 7.5
        Short 300 +/- 30 or less (11.8 +/- 1.2 or less) Continuous Sound 0
        Rear Corner Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 150 +/- 15 150 +/- 15
        Middle 450 +/- 50 to 300 +/- 30 (17.7 +/- 2.0 to 11.8 +/- 1.2) 75 +/- 7.5 75 +/- 7.5
        Short 300 +/- 30 or less (11.8 +/- 1.2 or less) Continuous Sound 0
        Rear Center Longest 1500 +/- 150 to 600 +/- 60 (59.1 +/- 5.9 to 23.6 +/- 2.4) 150 +/- 1.5 650 +/- 65
        Long 600 +/- 60 to 450 +/- 50 (23.6 +/- 2.4 to 17.7 +/- 2.0) 150 +/- 1.5 150 +/- 1.5
        Middle 450 +/- 50 to 350 +/- 40 (17.7 +/- 2.0 to 13.8 +/- 1.6) 75 +/- 7.5 75 +/- 7.5
        Short 350 +/- 40 or less (13.8 +/- 1.6 or less) Continuous Sound 0

      2. The No. 1 ultrasonic sensors are divided into 2 groups: a front section group (front corners) and a rear section group (rear corners and rear center). If multiple No. 1 ultrasonic sensors detect obstructions at the same time, the No. 1 clearance warning buzzer sounds as follows, in accordance with the detection distance and detection area of each group:

        Buzzer Sound Pattern ON/OFF Time (msec.)
        Detection Distance Short (*A) Middle (*A) Long (*A) Not detected
        Short (*B) Timing 1 Timing 2 Timing 2 Continuous Sound
        Middle (*B) Timing 2 75/75 75/75 75/75
        Long (*B) Timing 2 75/75 150/150 150/150
        Longest (*B) Timing 2 75/75 150/150 150/650
        Not detected Continuous Sound 75/75 150/150 None

        • *A: Front section

        • *B: Rear section

        A01HXCEE04

    2. Multi-information Display


      1. The location of an obstacle and the approximate distance between the vehicle and the obstacle are displayed on the multi-information display.

      2. The number of lines shown on the display changes based on the actual distance and flashes when the distance is short.

        A01HX1ME01
        Text in Illustration
        *1 Front Corner LH *2 Front Corner RH
        *3 Rear Corner LH *4 Rear Corner RH
        *5 Rear Center *6 Distance
        *7 Longest *8 Long
        *9 Middle *10 Short
        *11 Flashes - -

      3. Screens displaying warning messages relating to a No. 1 ultrasonic sensor malfunction, No. 1 ultrasonic sensor freezing, or presence of foreign matter on the No. 1 ultrasonic sensor, are displayed on the multi-information display.

        A01HX0PE01
        Text in Illustration
        *1 Malfunctioning *2 Frozen/Dirty

    3. Multi-display


      1. If an obstacle is detected when the parking assist monitor system is activated, the approximate distance between the vehicle and the obstacle is displayed on the multi-display.

      2. The distance is displayed by color based on the actual distance to the obstacle. When an obstacle is detected at the long or middle distance, the indicator is yellow. The color changes from yellow to red when the distance becomes short.

        A01HX7QE01
        Text in Illustration
        *1 Front Corner LH *2 Front Corner RH
        *3 Rear Corner LH *4 Rear Corner RH
        *5 Rear Center - -
        *a The illustrations shown are examples only. The illustrations may differ from the actual vehicle screens. - -

      3. The following items displayed by the multi-display are warning relating to sensor malfunction, sensor freezing, or presence of dirt on the sensor.

        A01HX8EE01
        Text in Illustration
        *1 Malfunctioning *2 Frozen/Dirty

    4. Detection Area


      1. The detection areas of the No. 1 ultrasonic sensor are as shown in the following illustration.

      2. These detection areas are applicable when positioning a 60 mm (2.36 in.) diameter pole parallel or perpendicular to the ground. The ranges vary depending on the measuring method and type of obstacle.

        A01HX3ZE02
        Text in Illustration (Corner Area:)
        *a Approximately 700 mm (27.6 in.) *b Approximately 840 mm (33.1 in.)
        *c Approximately 500 mm (19.7 in.) *d Approximately 600 mm (23.6 in.)
        *e Approximately 330 mm (13.0 in.) *f Approximately 510 mm (20.1 in.)
        *g Approximately 100 mm (3.9 in.) - -
        A01HX8QE01
        Text in Illustration (Rear Center Area:)
        *a Approximately 1510 mm (59.4 in.) *b Approximately 100 mm (3.9 in.)
        *c Approximately 1120 mm (44.1 in.) *d Approximately 510 mm (20.1 in.)

  5. DIAGNOSIS


    1. If a system malfunction is detected, the clearance warning ECU assembly stores Diagnostic Trouble Codes (DTCs) in its memory. For details, refer to the Repair Manual.