Hyundai Accent: Cruise Control System / Troubleshooting
Hyundai Accent (HC) (2017 - 2022) Service Manual / Engine Electrical System / Cruise Control System / Troubleshooting
Trouble Symptom 1
| Trouble symptom | Probable cause | Remedy |
| The set vehicle speed varies greatly upward or downward "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 | 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 | Probable cause | Remedy |
| 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 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 | Probable cause | Remedy |
| Cannot decelerate (coast) by using the "SET/–" switch | Temporary 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 | 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 | 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 | Probable cause | Remedy |
| The cruise main switch indicator lamp does not illuminate (although 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 |
Other information:
Hyundai Accent (HC) (2017 - 2022) Service Manual: Troubleshooting
- Troubleshooting SymptomPassible CauseRemedy (Refer to page) Water leaks from panorama sunroofDeteriorated roof lid weatherstripReplace Excessive roof lid - to - body clearance and improperly fitted weatherstripAdjust Wind noise around sunroof Loose or deformed deflector, gaps in body workRetighten adjust or replace Noise created by moving sunroof lidForeign particles lodged in guide railCheck drive cable and guide rails for foreign particles Loose guide rails and lidRetighten Motor runs but sunroof does not move or moves only partiallyForeign particles lodged in guide railAdjust or replace Incorrect engagement of motor pinion with drive cable Decrease in motor's clutch slipping force Increased sunroof sliding resistance or interference of sunroof with drive cables, weatherstrip, etc.Hyundai Accent (HC) (2017 - 2022) Service Manual: Description and Operation
- Description This specification applies to HCU (Hydraulic Control Unit) and ECU (Electronic Control Unit) of the HECU. (Hydraulic and Electronic Control Unit)This specification is for the wiring design and installation of ABS ECU.This unit has the functions as follows. – Input of signal from the wheel speed sensors attached to each wheel.
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