Hyundai Sonata LF: DCT (Dual Clutch Transmission) System / Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / DCT (Dual Clutch Transmission) System / Troubleshooting

Troubleshooting
Trouble symptom
Probable cause
Remedy
Displayed the warning lamp "E"
(Driving is only possible with 1/ R gear)
Not performed DCT learning
Perform the DCT manual learning procedure.
Impossible to driving with odd gear
Clutch actuator (Clutch motor 1 or position sensor 1 failure)
Replace the clutch actuator assembly.
Gear actuator (Shift motor 1 or position sensor 1 failure, select solenoid 1 or position sensor 1 failure)
Replace the gear actuator assembly.
Input speed sensor 1 failure
Replace the input speed sensor.
Faulty gears (2, 4, 6)
Replace the gear.
Faulty clutch 1
Replace the dual clutch assembly.
Faulty engagement bearing 1
Replace the Engagement Bearing Assembly
Impossible to driving with even gear
Clutch actuator (Clutch motor 2 or position sensor 2 failure)
Replace the clutch actuator assembly.
Gear actuator (Shift motor 2 or position sensor 2 failure, select solenoid 2 or position sensor 2 failure)
Replace the gear actuator assembly.
Input speed sensor 2 failure
Replace the input speed sensor.
Faulty gears (1, 3, 5, 7, R)
Replace the gear.
Faulty clutch 2
Replace the dual clutch assembly.
Faulty engagement bearing 1
Replace the Engagement Bearing Assembly
Impossible to driving 
TCM failure
Replace the TCM.
Odd / even system simultaneous failure
Replace the dual clutch assembly or gear.
Inhibitor switch / shift lever sensor simultaneous failure
Replace the inhibitor switch.
Impossible to manual mode
Inhibitor switch failure
Replace the inhibitor switch.
Shift lever sensor failure
Replace the shift lever.
Manual mod switch failure
Replace the manual mod switch housing.
noise
Oil level (Low)
Refill the oil with transmission after inspecting the parts (Oil seal, Drain plug, Filler plug).
Oil (Wrong)
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.
Oil leak
Oil level (High)
Inspect the oil level.
Gasket (Damaged)
Replace the gasket.
Oil seal (Worn or damaged)
Replace the oil seal.
Hard shifting or impossible to shift
Oil (Wrong)
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.

    Special Service Tools

    Special Service Tools Tool(Number and Name)IllustrationUse09200-3N000Engine support fixture(Beam)Removal and installation of the transaxle.Use this beam (SST No...

    Dual Clutch Transmission Assembly

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    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation


    Description The Tire Pressure Monitoring System (TPMS) monitors the pressure and temperature inside the tire in order to warn the driver of changes in pressure which may influence the operation of the vehicle. The TPMS control module analyzes wireless information fro In other words, the system detects the pneumatic pressure of the tires and warns the driver of if the pneumatic pressure drops below the standard level...

    Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting


    Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECM Trouble Symptom 3 Trouble symptomProbable causeRemedyThe CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 4 Trouble symptomProbable causeRemedyThe CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 5 Trouble symptomProbable causeRemedyCannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 6 Trouble symptomProbable causeRemedyCannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, or short circuit, or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 7 Trouble symptomProbable causeRemedyCC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 8 Trouble symptomProbable causeRemedyThe cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...

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