PARKING ASSIST MONITOR SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Rear Television Camera Assembly

    • Captures images of the area behind the vehicle.

    • The parking assist guide lines that are calculated based on signals from the steering sensor are superimposed on the captured image. Then, the image is sent to the radio and display receiver assembly*1 or navigation receiver assembly*2 as video signals.

    • When the back door is open, superimposing of parking assist guide lines is canceled and only the captured image is sent as video signals.
    Radio and Display Receiver Assembly*1

    • Displays images of the area behind the vehicle sent from the rear television camera assembly using the multi-display.

    • Sends signals indicating a mode change in parking guide line display functions to the rear television camera assembly.
    Navigation Receiver Assembly*2

    Shift Lock Control Unit Assembly


    • Shift Lever Position Sensor

    		 Sends the shift position signal to the hybrid vehicle control ECU.
    Hybrid Vehicle Control ECU Sends the shift position signal to the rear camera assembly.
    Steering Sensor Detects the angle of the steering wheel and sends the resulting signals to the rear television camera assembly.

    Brake Booster with Master Cylinder Assembly


    • Skid Control ECU

    		 Sends the vehicle speed signal to the rear television camera assembly.

    Back Door Lock Assembly


    • Back Door Courtesy Switch

    		 Sends the back door courtesy switch signal to the main body ECU (multiplex network body ECU).
    Main Body ECU (Multiplex Network Body ECU) Sends the back door courtesy switch signal to the rear television camera assembly.
    Clearance Warning ECU Assembly*3 Sends a clearance sonar information signal to the rear television camera assembly.

    *1: Models with multimedia system

    *2: Models with navigation system

    *3: Models with TOYOTA parking assist-sensor system

  2. SYSTEM CONTROL


    1. The parking assist monitor system operates when both of the following conditions are met:


      • The power switch is on (IG).

      • Reverse (R) is selected.

  3. FUNCTION


    1. Area Displayed on Screen


      1. Objects on the right of the vehicle appear on the right side of the multi-display assembly, and objects on the left of the vehicle appear on the left side of the multi-display assembly.

      2. The rear television camera assembly uses a wide-angle lens. The perceived distance from images that appear on the screen differs from the actual distance.

        A003JAB

        The illustration shown is an example only. The illustration may differ from the actual vehicle screen.

        Note

        The area displayed on the screen may vary according to vehicle status or road conditions. The area covered by the rear television camera assembly is limited. The rear television camera assembly does not show objects close to either corner of the bumper or show the area under the bumper.

    2. Calibration Following Parts Replacement


      1. The items listed below must always be adjusted whenever one of the following conditions occurs. For details, refer to the Repair Manual.

        Adjustment Items Condition
        Neutral steering point in memory System initializing is displayed.
        Steering angle setting

        • After spiral cable with sensor sub-assembly or steering sensor is removed and installed or after a connector is disconnected and reconnected, system initializing is displayed.

        • Steering sensor replacement.
        Back camera position setting

        • Vehicle height has changed due to replacement of suspension parts or tires.

        • The installation angle of the rear television camera assembly has changed.
        Parking assist monitor system initialization Rear television camera assembly is replaced.

  4. FAIL-SAFE


    1. The table below indicates the malfunction detection items for the components in this system.

      Malfunctioning Parts Detection Item Function
      Rear Television Camera Assembly Camera malfunction signal is detected Stops system operation and displays a dark screen
      Steering Sensor

      • Sensor malfunction is detected

      • Sensor open circuit signal is detected

      • Communication malfunction between the steering sensor and rear television camera assembly

      		 Not display the estimated course line
      Neutral steering point correction incomplete signal is detected

  5. DIAGNOSIS


    1. The radio and display receiver assembly*1 or navigation receiver assembly*2 is equipped with a diagnosis function which can display a diagnosis menu for the parking assist monitor system. The method for entering the diagnosis menu screen is the same as the method used for the multi-display. For details, refer to the Repair Manual.

      *1: Models with multimedia system

      *2: Models with navigation system