System Description

System Diagram:

SYSTEM DIAGRAM

SYSTEM DESCRIPTION

1. CONVERTIBLE ROOF CONTROL SYSTEM DESCRIPTION
a. The SOLARA convertible has adopted a one-button operation (continuous operation), electric opening/closing type convertible roof system. This system has the following features.
1. This system uses an electric motor to open and close the soft top, which consists of 6 link hinges. (operation time: approximately 10 seconds)
2. This system is controlled by the convertible roof control ECU.




2. OPENING OPERATION OF CONVERTIBLE ROOF CONTROL SYSTEM




a. Release the roof locks (roof lock OFF).




b. Turn the ignition switch ON and make sure the vehicle is stopped. Press and hold the convertible roof control OPEN switch. 0.2 seconds after the OPEN switch is pressed, a quarter window motor open signal is sent and the quarter windows open. 0.4 seconds after the OPEN switch is pressed, a power window regulator motor open signal is sent and the door windows open. 0.6 seconds after the OPEN switch is pressed, a roof motor open signal is sent and the soft top opens.
c. When the quarter window motors and roof motors have stalled for approximately 0.5 seconds, the open signals are cancelled.
d. After a power window regulator motor open signal is sent, the signal will continue for 5 seconds. Then the signal will be cancelled. If the OPEN switch is pressed again, a power window regulator motor open signal will continue for 0.8 seconds and then will be cancelled.
e. All outputs signals are turned OFF immediately when the convertible roof control switch is turned OFF.
f. Then convertible roof motor output signal is turned OFF when the vehicle is moving more than 3.5 km/h (2.2 mph).




3. CLOSING OPERATION OF CONVERTIBLE ROOF CONTROL SYSTEM




a. Turn the ignition switch ON and make sure the vehicle is stopped. Press and hold the convertible roof control CLOSE switch. 0.2 seconds after the CLOSE switch is pressed, a quarter window motor open signal is sent and the quarter windows open. 0.4 seconds after the CLOSE switch is pressed, a power window regulator motor open signal is sent and the door windows open. 0.6 seconds after the CLOSE switch is pressed, a roof motor close signal is sent and the soft top roof closes.
b. When the quarter window motors and roof motors have stalled for approximately 0.5 seconds, the open signals are cancelled.
c. After a power window regulator motor open signal is sent, the signal will continue for 0.8 seconds. Then the signal will be cancelled.
d. All outputs signal are turned OFF immediately when the convertible roof control switch is turned OFF.
e. The convertible roof motor output signal is turned OFF when the vehicle is moving more the 3.5 km/h (2.2 mph).

4. OPERATING CONDITIONS
a. The convertible roof control system will operate when the following conditions are met.
- Ignition switch is ON
- Vehicle speed: less than 3.5 km/h (2.2 mph)
- Convertible roof control switch is ON (OPEN or CLOSE switch is being pressed)

If the above conditions are not met during the convertible roof open/close operation, the system will stop operating.

HINT: Approximately 43 seconds after the ignition switch is turned OFF, the convertible roof ECU makes the roof motor drive circuit an open circuit. As a result, the soft top can be opened or closed manually.

5. MOTOR CONTROL
- The convertible roof control ECU has a function to detect the stalling of the convertible roof motor by increasing the amperage being sent to motors. When the soft top is in the fully opened/closed condition, the ECU detects the stalling of the roof motor and will stop the roof motor.
- The quarter window motors operate in the same way as the roof motors.
- The door window motors operate according to the convertible roof control ECU's output signals for 5 seconds when the soft top is opened (0.8 seconds when the roof control OPEN switch is pressed a second time) and 0.8 seconds when the soft top is closed.

6. WINDOW LINKED CONTROL
a. If the roof control OPEN/CLOSE switch is pressed, the convertible roof control ECU will start opening both quarter windows (0.2 seconds after the switch is pressed) and start opening both door windows (0.4 seconds after the switch is pressed) before opening or closing the soft top (0.6 seconds after the switch is pressed).

NOTE: The door window motors may overheat as a result of repeated roof control switch operations. If the ECU detects repeated switch operations, the ECU may deactivate the door window motors. If deactivated, the convertible roof control system's open/close operation will not be linked with the door window's fully open operation.

HINT:
- If the battery voltage is low or the vehicle is in an area that is 0 °C (32 °F) or less, the convertible roof control system's open/close operation may not be linked with the door window's fully open operation.
- If you wish to use the all window switch to close all of the windows simultaneously:
Press the all window switch. First, the door windows will lower approximately 100 mm (3.94 in.) and the quarter windows will fully close first. Continue holding down the all window switch and the door windows will then fully close.

7. OTHER PROTECTION CONTROL
a. Motor current control




1. The convertible roof control ECU has a function to detect the stalling of the roof motors and quarter window motors by detecting of current (amperage) applied to the motors. When the ECU detects the stalling of any motor, it will stop actuating the motor.

b. Timer control.




1. If the designated maximum operating time for a motor has expired, the convertible roof control ECU will stop motor actuation.