Hyundai Accent (HC): Cruise Control System / Troubleshooting

- Trouble Symptom Charts

Trouble Symptom 1

Trouble Symptom 2
Trouble symptomProbable causeRemedy
The set vehicle speed varies greatly upward or downward
"Surging" (repeated alternating acceleration and deceleration) occurs after setting
Malfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the part
Malfunction of ECMCheck input and output signals at ECM

Trouble Symptom 3
Trouble symptomProbable causeRemedy
The 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 switch
Malfunction of the ECM signalsCheck input and output signals at ECM

Trouble Symptom 4
Trouble symptomProbable causeRemedy
The 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 switch
Improper adjustment of inhibitor switch
Malfunction of the ECM signalsCheck input and output signals at ECM

Trouble Symptom 5
Trouble symptomProbable causeRemedy
Cannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switch
Malfunction of the ECM signalsCheck input and output signals at ECM

Trouble Symptom 6
Trouble symptomProbable causeRemedy
Cannot 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/+" switch
Malfunction of the ECM signalsCheck input and output signals at ECM

Trouble Symptom 7
Trouble symptomProbable causeRemedy
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 speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the part
Malfunction of the ECM signalsCheck input and output signals at ECM

Trouble Symptom 8
Trouble symptomProbable causeRemedy
The cruise main switch indicator lamp does not illuminate (although CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part.
Harness damaged or disconnected

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Injector

- Description A DPI (Dual Point Injection) system means a system with two injectors in one cylinder (intake port) and has a total of eight injectors.The injector is an electronically controlled fuel injector, a solenoid valve that supplies precisely calculated fuel to the engine in spray form for the optimal combustion. This helps satisfy various engine operating conditions.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Airbag Module Disposal

- Airbag Disposal When you scrap a vehicle equipped with an airbag, you must deploy it first.When you deploy an airbag, you need to have a skilled mechanic do the work. The used airbag should not be reinstalled in another vehicle for reuse.     • Upon deployment, the explosion will create a loud noise, so you have to do it in a proper place not to disturb others.

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