Sunroof / Moonroof Motor: Service and Repair

Replacement

1. Disconnect the negative (-) battery terminal.
2. Remove the sunroof motor (A) after removing 3 screws and disconnect.




3. Installation is the reverse of removal.

Inspection

1. Disconnect the negative (-) battery terminal.
2. Apply the battery voltage to terminal 3, 6 and ground the terminal 1.




3. Ground the terminals as below table, and check that the sunroof unit operates as below table.




4. Make these input tests at the connector
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK, the sunroof motor must be faulty; replace it.






Resetting The Sunroof

Whenever the vehicle battery is disconnected or discharged, or you use the emergency handle to operate the sunroof, you have to reset your sunroof system as follows:
1. Turn the ignition key to the ON position.
2. According to the position of the sunroof, do as follows.
(1) In case that the sunroof has closed completely or been tilted:
Press the TILT UP button until the sunroof has tilted upward completely.
(2) In case that the sunroof has slide-opened:
Press and hold the CLOSE button for more than 5 seconds until the sunroof has closed completely.
Press the TILT UP button until the sunroof has tilted upward completely.
3. Release the TILT UP button.
4. Press and hold the TILT UP button once again until the sunroof has returned to the original position of TILT UP after it is raised a little higher than the maximum TILT UP position.
When this is complete, the sunroof system is reset.

Protecting The Overheated Motor
In order to protect the overheated sunroof motor by continuous motor operation, the sunroof ECU controls the Run-time and Cool-time of motor as followings;
1. The Sunroof ECU detects the Run- time of motor
2. Motor can be operated continuously for the 1st Run-time(120 ± 10sec.).
3. The continuously operated motor stops operating after the 1st Run-time(120 ± 10sec.).
4. And then Motor is not operated for the 1st Cool-time(18 ± 2sec.).
5. Motor is operated for the 2nd Run-time(10 ± 2sec.) at the continued motor operation after 1st Cool-time(18 ± 2sec.)
6. The continuously operated motor stops operating after the 2st Run-time(120 ± 10sec.)
7. Motor is not operated for the 2st Cool-time(18 ± 2sec.).
8. Motor repeats the 2nd Run-time and 2nd Cool-time at the continued motor operation.
A. In case that motor is not operated continuously, the Run-time which is limited for protecting the overheated motor is increased.
B. The Run-Time of motor is initialized to "0" if the battery or fuse is reconnected after being disconnected, discharged or blown.




T1 : 120 ± 10 sec., T2 : 18 ± 2 sec.,
T3 : 10 ± 2 sec., T4 : 18 ± 2 sec.