KIA Niro: DCT (Dual Clutch Transmission) System - Troubleshooting
Trouble symptom:
Warning lamp ""E"" is illuminated(Driving is only possible with 1/R gear)
Probable cause → Remedy
DCT learning not performed → Perform the DCT manual learning procedure.
Trouble symptom:
Driving impossible at odd gear
Probable cause → Remedy
Clutch actuator (Clutch motor 1 or position sensor 1 is faulty) →Replace the clutch actuator assembly.
Gear actuator (Shift motor 1, position sensor 1, select solenoid 1 or position sensor 1 is faulty) →Replace the gear actuator assembly
Input speed sensor 1 is faulty →Replace the input speed sensor.
Faulty gears (1, 3, 5) →Replace the gear.
Faulty clutch 1 →Replace the dual clutch
assembly.
Faulty clutch engagement bearing 1 → Replace the clutch engagement
bearing
Trouble symptom:
Driving impossible at even gear
Probable cause → Remedy
Clutch actuator (Clutch motor 2 or position sensor 2 is faulty) →Replace the clutch actuator assembly.
Gear actuator (Shift motor 2, position sensor 2, select solenoid 2 or position sensor 2 is faulty) → Replace the gear actuator assembly.
Input speed sensor 2 is faulty → Replace the input speed sensor.
Faulty gears (2, 4, 6, R) →Replace the gear.
Faulty clutch 2 →Replace the dual clutch
assembly.
Faulty clutch engagement bearing 2 → Replace the clutch engagement
bearing
Trouble symptom:
Driving impossible
Probable cause → Remedy
Faulty TCM →Replace the TCM.
Simultaneous failure of odd & even systems →Replace the dual clutch assembly or gear.
Simultaneous failure of inhibitor switch & shift lever sensor →Replace the inhibitor switch.
Trouble symptom:
Manual mode disabled
Probable cause → Remedy
Faulty inhibitor switch →Replace the inhibitor switch.
Faulty shift lever sensor →Replace the shift lever.
Trouble symptom:
Noise
Probable cause → Remedy
Oil level (Low) → Refill the transmission with oil after inspecting the parts (oil, seal, drain plug, and filler plug).
Oil (Wrong type)→ Replace the oil.
Synchronizer ring (Worn or damaged) → Replace the synchronizer ring.
Gear (Worn or damaged) → Replace the gear.
Bearing (Worn or damaged) → Replace the bearing.
Trouble symptom:
Oil leakage
Probable cause → Remedy
Oil level (High) → Inspect the oil level.
Gasket (Damaged) → Replace the gasket.
Oil seal (Worn or damaged) → Replace the oil seal.
Trouble symptom:
Hard shifting or impossible to shift
Probable cause → Remedy
Oil (Wrong type) → Replace the oil.
Shift fork (Worn) → Replace the shift fork.
Synchronizer ring (Worn or damaged) → Replace the synchronizer ring.
Gear (Worn or damaged) → Replace the gear.
Hub sleeve (Worn or damaged) → Replace the hub sleeve.
READ NEXT:
DCT(Dual Clutch Transmission) Repair procedures
Components
Hybrid drive motor assembly
DCT (Double Clutch Transmission) assembly
Gear actuator assembly
DCT support bracket
Inhibitor switch
Clutch actuator assembly
Dual clutch assembly
Engine clutch actuator assembly
Remova
Transmission Gear Oil Repair procedures
Oil Level Check
Inspection
Remove the under cover.
(Refer to Engine Mechanical System - "Engine Room Under Cover")
Remove the oil filler plug (A or B).
Check the condition of the oil and make sure that it is at the proper
SEE MORE:
Waist Line Molding Repair procedures
Replacement
Warning
Put on gloves to protect your hands.
Warning
Use a plastic panel removal tool to remove interior trim pieces
without marring the surface.
Be careful not to bend or scratch the trim and panels.
Using a remover, re
Starting the
vehicle
Vehicles with smart key system
Carry the smart key or leave it inside
the vehicle.
Make sure the parking brake is firmly
applied.
Place the shift dial in P (Park). With
the shift dial in N (Neutral), you cannot
start the vehicle.
De
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