System Description

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

GENERAL
The vehicle's electric retractable hardtop system can be opened and closed by pressing and holding the roof control switch. This system has the following features:
- This system consists of 3 links: the roof link for opening and closing the roof panel; the luggage link for opening and closing the luggage door front; and the package tray trim link for the package tray trim slide and tilt-up/down operation. These links are operated by electric motors.
- The retractable hardtop starts opening slowly and finishes closing slowly. As a result, the roof operation is smoother and quieter.
- The retractable hardtop operating time from the fully closed position to the fully open position (and vice versa) is approximately 25 seconds.
- This system is controlled by the sliding roof control ECU. The necessary control signals from other ECUs are input through the BEAN.

FUNCTION OF COMPONENTS

Component		Function
Sliding Roof Control ECU		ECU that controls electric opening-closing retractable hardtop
Motor	Roof Drive Motor LH	With rotation of motor installed on right and left roof links, drives roof link directly and operates roof opening and closing
	Roof Drive Motor RH
	Roof Lock Motor	Roof lock motor operates lock/unlock of removable roof auxiliary catch LH/RH through rod
	Luggage Door Drive Motor LH	Rotation of motor installed on right and left luggage link drives luggage link directly and operates opening and closing of luggage door front
	Luggage Door Drive Motor RH
	Luggage Door Closer Motor LH	Operates lock/unlock of luggage door front lock LH
	Luggage Door Closer Motor RH	Operates lock/unlock of luggage door front lock RH
	Package Tray Motor	Operates tilt up/down of package tray trim, sliding of swing package tray trim center and opening/closing of swing package tray trim LH/RH
	Quarter Power Window Motor LH	Opens/Closes quarter power window LH
	Quarter Power Window Motor RH	Opens/Closes quarter power window RH
Limit Switch	Limit Switch (Roof Open)	Detects full-open condition of roof
	Limit Switch (Roof position No. 1, No. 2, and No. 3)	Detects halfway operation position of roof using No. 1, No. 2 and No. 3 switches (For control of interlock operation of package tray trim)
	Limit Switch (Roof Close LH)	Detects full-close condition of roof installed on removal roof auxiliary catch LH of front pillar
	Limit Switch (Roof Close RH)	Detects full-close condition of roof installed on removal roof auxiliary catch RH of front pillar
	Limit Switch (Roof Lock)	Detects lock completion condition of roof lock
	Limit Switch (Luggage Door Open)	Detects opening condition (full-open) of luggage door
	Limit Switch (Luggage Door Close)	Detects closing condition (full-close) of luggage door
	Limit Switch (Luggage Front Lock LH)	Detects lock completion condition of LH of luggage door front lock
	Limit Switch (Luggage Front Lock RH)	Detects lock completion condition of RH of luggage door front lock
	Luggage Door Lock Motor and Detection Switch	Detects lock/unlock operation of luggage door lock (rear lock) and lock completion condition (For tilt up operation control of luggage door front)
	Limit Switch (Package Tray No. 1 and No. 2)	Detects tilt up/down and swing operation of package tray trim
	Limit Switch (Tonneau Cover)	Detects pulled-out condition of tonneau cover inside luggage compartment at tonneau cover hook portion Detects secured luggage space conditions for storing roof and detects only during roof opening operation
Control Switch	Retractable Hardtop Control Switch	Performs opening and closing operation of retractable hardtop
Control Switch	Luggage Door Opener Main Switch	On/Off switch for retractable hardtop operation and luggage door opener operation
Mechanical	Roof Link	Roof link is jointed with roof panel and back window, and operates opening and closing of sliding roof according to roof link motion
	Package Tray Trim Link	With a cable and right and left link system, operates tilt up/down of package tray trim, sliding of package tray panel center and swinging of package tray trim panel
	Luggage Link	Operates open/close of luggage door front by luggage 6 link when storing sliding roof in luggage compartment, and rear opening and closing when opening and closing luggage door by luggage 4 link

CONSTRUCTION AND OPERATION
1. Roof link:
  1. The roof drive motor is directly connected with the control link. When the motor rotates, the link operates and opens and closes the roof.
  2. The roof drive motor controls the guide pin through the cable. The guide pin is located between the bracket link (roof panel) and the rail link (back window frame). The guide pin fixes the 2 links in the locked condition when the roof is closed. When the roof is opened, the guide pin is released and the 2 links can move.
    
    Fig 1: Identifying Roof Link Components
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Package tray trim link:
  1. Linking with the opening and closing operation of the retractable hardtop, the package tray trim link LH motor operates. The motor uses the cable to drive the right and left link system, slides the package tray panel center, and swings the package tray trim panel and panel No. 2. The operation is as follows:
    - The package tray trim tilts-up and down.
    - The package tray trim panel center slides to the front and rear direction.
    - The package tray trim panel and panel No. 2 rotate.
    - The package tray trim panel center, package tray trim panel, and panel No. 2 operate during tilt-up down operation for roof opening and closing.
      
      Fig 2: Identifying Package Tray Trim Link Components
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Luggage link:
  - The luggage link consists of the luggage 6 link and luggage 4 link.
  - When the roof is stored, the luggage 6 link will operate and the front of the luggage door will open. With the roof closed, when storing luggage in the luggage space, the luggage 4 link will operate and the luggage door will open from the rear side.
    
    Fig 3: Identifying Luggage Link Components
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002