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.
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DCT(Dual Clutch Transmission) Repair procedures
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