Hyundai Sonata LF: Cruise Control System / Cruise Control Switch Schematic Diagrams

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...

Cruise Control Switch Repair procedures

Inspection [Measuring Resistance] 1. Disconnect the cruise control switch connector from the control switch. 2. Measure resistance between terminals on the control switch when each function switch is ON (switch is depressed)...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Power Window Switch Components and Components Location

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Hyundai Sonata LF 2014-2019 Service Manual: Panorama Sunroof

Components and Components Location Component Location 1. Panorama sunroof2. Panorama sunroof switch3. Panorama sunroof motor & controller4. Roller blind motor & slave controller Schematic Diagrams Circuit Diagram NoSunroof wiringconnector(Vehicle side)Sunroof wiringconnector(Motor)Panorama glass motor(Master)Blind motor(Slave)1GND 1 GND 1GND 22Glass statussignal / tool(parameter)Glass status signal / tool(parameter)Blind signal3BCM EnableBCM Enable-4Tilt up switchTilt up switch-5GND 2--6BATT 1BATT 1BATT 27---8Vehicle speed signalVehicle speed signalVehicle speed signal9Glass open switch Glass open switchBlind open switch10Glass close switch Glass close switchBlind close switch11BATT 212Blind open switch 13Blind close switch 14Blind signal Panorama Sunroof Switch Components and Components Location Components Panorama Sunroof Switch Repair procedures Inspection 1...