Kia Forte: Dual Clutch Transmission Control System / Gear Actuator Assembly

Kia Forte 2019-2022 (BD) Service Manual / DCT(Dual Clutch Transmission) System / Dual Clutch Transmission Control System / Gear Actuator Assembly

Components and components location
Component Location

1. Gear actuator assembly
2. Shift motor (Even)
3. Shift motor (Odd)
4. Select solenoid (Even)
5. Select solenoid (Odd)


Resistance (line to line)
Shift motor 1/2
135.4 mΩ ± 10 %
Select solenoid 1/2
0.7 mΩ ± 10 %
Max. current
Shift motor 1/2
45 A
Select solenoid 1/2
20 A
Select solenoid sensor output
4.0 ± 0.15 V
1.0 ± 0.15 V
Operating condition
-40 to 257°F (-40 to 125°C)
Rated voltage
13 V
Sensor supply voltage
8.75 V ± 10 %

Description and operation

The gear actuator comprises the shift motor and select solenoid.

Gear actuator shift motor and select solenoid use signals from TCM to control the gear.

Schematic diagrams
Circuit Diagram

Repair procedures

Move the shift lever to "N" range.


Remove the air cleaner assembly and air duct.

(Refer to Engine Mechnical System - "Air Cleaner")


Remove the battery and battery tray.

(Refer to Engine Electrical System - "Battery")


Disconnect the gear actuator motor connector (A).


Remove the wiring mounting clip (B) after disconnecting the gear actuator solenoid connector (A).


Remove the gear actuator assembly after loosening bolts (A, B).

Tightening torque :

(A) 9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

(B) 19.6 - 26.5 N·m (2.0 - 2.7 kgf·m, 14.5 - 19.5 lb·ft)


Install in the reverse order of removal.


Check the following before installing the gear actuator assembly.


Check that the gear actuator is placed in the "neutral" state.


Check the assembled state of the O-rings (A).


Apply gear oil to the surface of O-rings.


Check the assembled state of the dowel pins (A).

Perform the clutch touch point learning procedure using the KDS after replacing the gear actuator assembly.

Clutch Actuator Assembly
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Input Speed Sensor 1
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