ROOF SUNSHADE SYSTEM


  1. FUNCTION


    1. Roof Sunshade System


      1. The roof sunshade system has the following functions:

        Function Outline
        Manual Open-and-close This function operates when the roof sunshade switch is pressed and held for approximately 0.3 seconds or less.
        One-touch Auto Open-and-close This function operates when the roof sunshade switch is pressed and held for approximately 0.3 seconds or more.
        Jam Protection The jam protection function automatically stops the roof sunshade and moves it open halfway if a foreign object gets jammed in the roof sunshade during a close operation.

    2. One-touch Auto Open Function


      1. Upon receiving an open signal from the roof sunshade switch, the sliding roof drive gear rotates the motor in the open direction. When the motor rotates, the sunshade trim, which is linked to the motor by a drive cable, moves to open.

        A00XRTQC03
        *1 Sunshade Trim *2 Drive Cable
        *3 Motor (Sliding Roof Drive Gear Assembly) - -
        *a Front - -

    3. One-touch Auto Close Function


      1. Upon receiving a close signal from the roof sunshade switch, the sliding roof drive gear rotates the motor in the close direction. When the motor rotates, the sunshade trim, which is linked to the motor by a drive cable, moves to close.

        A00XRU4C02
        *1 Sunshade Trim *2 Drive Cable
        *3 Motor (Sliding Roof Drive Gear Assembly) - -
        *a Front - -

    4. Jam Protection Function


      1. To control the jam protection function, the roof sunshade ECU (sliding roof drive gear assembly) monitors the amount of movement and judges jamming of the roof sunshade based on the pulse signals from Hall IC1, and the moving direction of the roof sunshade from the phase difference between the pulses from Hall IC1 and Hall IC2.

        A00XRURE02
        A00XRLOE02

  2. FAIL-SAFE


    1. Roof Sunshade System


      1. The fail-safes for the roof sunshade system are as follows:

        Function Outline
        Position Information Malfunction Judgment When this function determines that a position malfunction has occurred during operation, it makes the position information indefinite and renders the initialization incomplete.
        Continuous Operation Restriction If current is applied to the motor for 20 seconds or longer, this function stops the current.
        Forced Learning Operation This function releases the position information and leaves the initialization incomplete as a safeguard against an inability to close the shade completely.
        Hall IC Failure Judgment If one of the Hall ICs fails, the system uses the other Hall IC, which is working, to perform only motor lock judgment.
        If both Hall ICs fail, the system will perform a manual operation in which the overload reverse operation is prohibited.
        Open Circuit Process If the system is unable to receive communication signals, it will hold the last received data for 120 ms. Then, it will resume the default setting.
        Manual Close Operation after Stopping due to Open Overload Detection If the system detects an overload (ordinary load or seized motor) while opening the sunshade, it will stop the shade and perform a manual close operation in which the shade open operation is prohibited.
        Reset Relearning Function If the CPU is reset during a shade open or shade close operation, the system will perform this function when the position information becomes usable.

  3. DIAGNOSIS


    1. If the sliding roof motor malfunctions, a Diagnostic Trouble Code (DTC) is stored in the roof sunshade ECU (sliding roof drive gear assembly). The DTC can be read by connecting the Global TechStream (GTS) to the DLC3. For details, refer to the Repair Manual.