Kia Forte: Sunroof / Sunroof Motor

Kia Forte 2019-2021 (BD) Service Manual / Body Electrical System / Sunroof / Sunroof Motor

Repair procedures
Inspection
1.

Disconnect the negative (-) battery terminal.

2.

Remove the overhead console lamp.

(Refer to Lighting System - "Overhead Console Lamp")

3.

Ground the terminals as below table, and check that the sunroof unit operates after disconnecting the sunroof motor connector.

4.

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

Terminal
Test condition
Test : Desired result
3
IG2 ON
Check for voltage to ground: There should be battery voltage.
1
Under all conditions
Check for continuity to ground: There should be continuity.
6
Under all conditions
Check for voltage to ground: There should be battery voltage.

Removal
1.

Remove the roof trim.

(Refer to Body - "Roof Trim Assembly")

2.

Remove the sunroof motor (A) after loosening the screws.

Installation
1.

Install in the reverse order of removal.

Adjustment

Resetting The Sunroof

Whenever the vehicle battery is disconnected or discharged, or the emergency handle was used to operate the sunroof, the sunroof system must be reset in the following procedure:

1.

Turn the ignition key to the ON position and then close the sunroof completely.

2.

Release the sunroof control lever.

3.

Press and hold the CLOSE button for more than 10 seconds until the sunroof fully closed and then recovered slightly.

4.

Release the sunroof control lever.

5.

Press and hold the CLOSE button once again within 5 seconds until the sunroof operates as follows:

Tilt → Slide Open → Slide Close

Then release the lever.

6.

Reset procedure of panorama system is finished.

Protecting Motor From Overheating

In order to protect the sunroof motor from overheating from continuous motor operation, the sunroof ECU controls the Run-time and Cool-time of the motor as follows:

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 continuous operation of motor stops after the 1st Run-time (120 ± 10sec.).

4.

Then Motor does not operate for the 1st Cool-time (18± 2sec.).

5.

Motor operates for the 2nd Run-time (10 ± 2 sec.) at the continued motor operation after 1st Cool-time (18 ± 2sec.).

6.

The continuous operation of motor stops operating after the 2nd Run-time (10 ± 2sec.)

7.

Motor does not operate for the 2nd Cool-time (18 ±2sec.).

8.

Motor repeats the 2nd run-time and 2nd cool-time at the continued motor operation.

In case that motor is not operated continuously, the run-time is increased.

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.

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