REAR SUNSHADE SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function
    Rear Window Shade Assembly Rear Sunshade Motor Activates the motor according to operation signals from the auto curtain control relay.
    Hall IC Outputs pulse signals and determines if there is a jam in the rear sunshade according to pulse length.
    Automatic Curtain Control Relay

    • Inputs actuation signals from the rear sunshade switch and actuates the sunshade motor.

    • Actuates the sunshade motor in the retraction direction when shift position R signals are received from the main body ECU while the rear sunshade is being deployed.

    Integration Control and Panel Assembly


    • Rear Sunshade Switch

    		 Outputs a rear sunshade switch operation signal to the auto curtain control relay.

    Rear Power Seat Switch*1


    • Rear Sunshade Switch

    		 Outputs a rear sunshade switch operation signal to the auto curtain control relay.

    Rear Multi Operation Panel (Rear Power Seat Switch)


    • Rear Sunshade Switch

    		 Outputs a rear sunshade switch operation signal to the auto curtain control relay.
    Main Body ECU (Multiplex Network Body ECU) Outputs shift position signals input from the hybrid vehicle control ECU assembly to the auto curtain control relay.
    Hybrid Vehicle Control ECU Assembly Outputs shift position signals to the main body ECU via the central gateway ECU.
    Combination Meter Assembly Sends vehicle speed signals to the auto curtain control relay through the main body ECU.
    Central Gateway ECU (Network Gateway ECU) Relays the signal between the CAN communication lines.
    DLC3

    • Can read the Diagnostic Trouble Codes (DTCs) of malfunctions by connecting the Global TechStream (GTS).

    • The Global TechStream (GTS) can be connected to change settings as desired by the user.

    *1: Models without rear power seat system

    *2: Models with rear power seat system

  2. OPERATION


    1. Deployment/Retraction Operation


      1. When the integration control and panel assembly, the rear power seat switch*1 or the rear sunshade switch on the rear multi operation panel*2 is operated, the sunshade motor of the rear sunshade assembly is actuated to deploy or retract the rear sunshade.

        *1: Models without rear power seat system

        *2: Models with rear power seat system

      2. A Hall IC memorizes the counted number of the pulse generated when the rear door sunshade changes from the fully open position to the fully closed position the first time that the rear door sunshade is operated, and then the operation stops just before the mechanical lock position according to the pulse count. As a result, unnecessary motor locks are eliminated to protect the mechanism.

    2. Reverse-linked Operation


      1. When the shift position is changed to R, the sunshade motor of the rear window shade assembly is rotated in the retraction direction to retract the rear sunshade.

      2. When any of the following conditions is met after the rear sunshade is retracted by a reverse-linked operation, the rear sunshade deploys.


        • The rear window sunshade switch is pushed.

        • The shift position is changed to P.

        • The shift position is changed to a position other than P and R and the vehicle speed becomes 15 km/h (9 mph) or more.

        Tech Tips

        When the engine switch is turned off with the rear sunshade retracted via a reverse-linked operation, if the power is turned on (IG) and the vehicle is driven at 15 km/h (9 mph), the rear sunshade does not deploy. In that case, push the rear sunshade switch to deploy the rear sunshade.

    3. Key-off Operation


      1. Rear sunshade operations are only possible for approximately 60 seconds after the power switch is turned from on (IG) to on (ACC) or off.

  3. FAIL-SAFE


    1. When a malfunction is detected in the Hall IC that detects the position, speed and direction of the rear sunshade, the auto curtain control relay enter fail-safe mode via the self-diagnostic function.

      Fail-safe Detection Items
      No. Item Situation Operation after Detection
      1 Pulse Sensor Malfunction (Single Pulse) Occurs when a certain value or more of only one pulse of 2 pulses is detected. Motor stops
      2 Pulse Direction Abnormality Occurs when the sunshade motor actuation direction and reverse direction pulses are sent in succession when the rear door sunshade is opening or closing, and a value greater than or equal to the specified quantity is detected. Motor stops