Sunroof / Moonroof: Description and Operation

SYSTEM OUTLINE

In this system, the HALL IC in the sliding roof control ECU detects the changes in motor rotation, and allows opening/closing, tilting up/down of the moon roof by one touch operation. In addition, catching prevention function during moon roof operation is also provided. Voltage is constantly applied from S/ROOF fuse to TERMINAL 5 of the sliding roof control ECU. When the ignition SW is turned on, the current flows from ECU-IG fuse to TERMINAL 8 of the sliding roof control ECU.

1. SLIDE OPEN OPERATION
When the moon roof is fully closed (Limit SW No.1 off, limit SW No.2 on), and the sliding roof control SW is kept pressed to OPEN position for approximately 0.3 seconds or longer, a signal is input from TERMINAL 8 of the sliding roof control SW to TERMINAL 9 of the sliding roof control ECU. This activates the relay and rotates the motor to open the moon roof automatically. Then, when the limit SW No.1 is turned on and then turned off again, the pulse signal sent from the HALL IC activates the relay, and if the pulse signal is not input for 0.5 seconds or longer, it determines that the moon roof is fully open, and stops the motor. If other operation SW or the open SW is operated while the moon roof is being opened, the relay is activated to stop the moon roof operation. In addition, when the moon roof is tilted up, the slide open operation does not function.

2. SLIDE CLOSE OPERATION
When the moon roof is fully opened (Limit SW No.1 off, limit SW No.2 off), and the sliding roof control SW is kept pressed to CLOSE position for approximately 0.3 seconds or longer, a signal is input from TERMINAL 6 of the sliding roof control SW to TERMINAL 10 of the sliding roof control ECU. This activates the relay and rotates the motor to close the moon roof automatically. Then, when the limit SW No.2 is turned on, the pulse signal sent from the HALL IC activates the relay, and determines that the moon roof is closed fully, and stops the motor. If other operation SW or the close SW is operated while the moon roof is being closed, the relay is activated to stop the moon roof operation.

3. TILT UP OPERATION
When the moon roof is fully closed (Limit SW No.1 off, limit SW No.2 on), and the sliding roof control SW is kept pressed to UP position for approximately 0.3 seconds or longer, a signal is input from TERMINAL 6 of the sliding roof control SW to TERMINAL 10 of the sliding roof control ECU. This activates the relay and rotates the motor to tilt up the moon roof automatically. If the pulse signal is not input from the HALL IC for 0.5 seconds or longer, it determines that the moon roof is fully tilted up, and stops the motor. If other operation SW or the tilt up SW is operated while the moon roof is being tilted up, the relay is activated to stop the moon roof operation. In addition, when the moon roof is opened, the tilt up operation does not function.

4. TILT DOWN OPERATION
When the moon roof is fully tilted up (Limit SW No.1 on, limit SW No.2 on). and the sliding roof control SW is kept pressed to DOWN position for approximately 0.3 seconds or longer, a signal is input from TERMINAL 8 of the sliding roof control SW to TERMINAL 9 of the sliding roof control ECU. This activates the relay and rotates the motor to tilt down the moon roof automatically. Then, when the limit SW No.1 is turned off, the pulse signal sent from the HALL IC activates the relay, and determines that the moon roof is closed fully, and stops the motor. If other operation SW or the tilt down SW is operated while the moon roof is being tilted down, the relay is activated to stop the moon roof operation.

5. CATCHING PREVENTION FUNCTION
During slide close or tilt down operation, if the relay detects a catching load from the changes in the rotation of the motor, the operation is stopped, and the motor is rotated in the reverse direction.

- Slide Close Operation
The moon roof is moved approximately 200 mm in the reverse direction (Slide open) after a catching load has been detected. However, if the full open position is detected before moving approximately 200 mm, the reverse movement is stopped.

- Tilt Down Operation
If a catching load is detected, the moon roof is moved in the reverse direction until fully tilted up.

6. KEY OFF MOON ROOF OPERATION
Within approximately 45 sec. after the ignition SW is turned from on to off, the moon roof can be operated. However, if the driver or front passenger door is opened during this period of time, the moon roof operation is stopped even through 45 sec. have not elapsed.

7. MOON ROOF OPERATION LINKED WITH DOOR KEY LOCK AND UNLOCK SW
When the ignition key is inserted into the driver door key cylinder and kept turned to lock or unlock position for 1.5 seconds or longer, the slide open/close operation of the moon roof functions, through communication control.

8. FAIL-SAFE FUNCTION
If the moon roof is operated continuously in the same direction, the current flowing to the motor is cut off when the time shown below has elapsed after the motor operation has been started.
- Slide open/ close operation by the sliding roof control SW approximately 20 sec.
- Tilt up/down operation by the sliding roof control SW approximately 2 sec.
- Slide open operation for reverse movement in case of catching prevention function approximately 20 sec.
- Tilt up operation for reverse movement in case of catching prevention function approximately 2 sec.