Hyundai Genesis: Cruise Control System / Troubleshooting

Trouble Symptom Charts

Trouble Symptom 1

Trouble Symptom 2

Trouble symptom	Probable cause	Remedy
The set vehicle speed turns too high or low. "Surging" (repeated alternating acceleration and deceleration) occurs after setting	Malfunction of the vehicle speed sensor circuit	Repair the vehicle speed sensor system, or replace the part
	Malfunction of ECM	Check input and output signals at ECM

Trouble Symptom 3

Trouble symptom	Probable cause	Remedy
The CC system is not canceled when the brake pedal is depressed	Damaged or disconnected wiring of the brake pedal switch	Repair the harness or replace the brake pedal switch
	Malfunction of the ECM signals	Check input and output signals at ECM

Trouble Symptom 4

Trouble symptom	Probable cause	Remedy
The CC system is not canceled when the shift lever moves to the "N" position (It is canceled, however, when the brake pedal is depressed)	Damaged or disconnected wiring of inhibitor switch input circuit	Repair the harness, or repair or replace the inhibitor switch
	Improper adjustment of inhibitor switch
	Malfunction of the ECM signals	Check input and output signals at ECM

Trouble Symptom 5

Trouble symptom	Probable cause	Remedy
Cannot decelerate (coast) by using the "SET/–" switch	Temporarily damaged or disconnected wiring of "SET/–" switch input circuit	Repair the harness or replace the "SET/–" switch
	Malfunction of the ECM signals	Check input and output signals at ECM

Trouble Symptom 6

Trouble symptom	Probable cause	Remedy
Cannot accelerate or resume speed by using the "RES/+" switch	Damaged or disconnected wiring, or short circuit, or "RES/+" switch input circuit	Repair the harness or replace the "RES/+" switch
	Malfunction of the ECM signals	Check input and output signals at ECM

Trouble Symptom 7

Trouble symptom	Probable cause	Remedy
CC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speed	Malfunction of the vehicle-speed sensor circuit	Repair the vehicle speed sensor system, or replace the part
	Malfunction of the ECM signals	Check input and output signals at ECM

Trouble Symptom 8

Trouble symptom	Probable cause	Remedy
The cruise main switch indicator lamp does not illuminate (But CC system is normal)	Damaged or disconnected bulb of cruise main switch indicator lamp	Repair the harness or replace the part.
	Harness damaged or disconnected

Schematic Diagrams

System Block Diagram Component Parts And Function Outline Component partFunctionVehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.ECMReceives signals from sensor and cont ...

Cruise Control Switch Schematic Diagrams

Circuit Diagram ...

Other information:

Hyundai Genesis (DH) 2013-2016 Service Manual: ECS Control Unit Repair procedures

Replacement 1. Disconnect the battery (-) terminal. 2. Remove the trunk luggage side trim [RH]. (Refer to Body - "Trunk Trim") 3. Disconnect the connector and then remove the ECS control unit. Installation 1. Installation in the reverse order of removal. 2. Perform the ESC var ...

Hyundai Genesis (DH) 2013-2016 Service Manual: Transfer Case Assembly Repair procedures

Removal     In case of replacing the controller (ECU) and transfer case due to changing characteristics of the frictional materials inside the transfer case, it is necessary to check and enter the calibration data. - The calibration procedure is not required in case of r ...