Hyundai Sonata: Troubleshooting
Trouble Symptom Charts
Trouble Symptom 1 |
Trouble Symptom 2
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 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 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 |
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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 |
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 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 |
Description and Operation
Cruise Control The cruise control system is engaged by the cruise "ON/OFF" main switch located on right of steering wheel column. The system has the capability to cruise, coast, ac ...Cruise Control Switch. Schematic Diagrams
Circuit Diagram ...See also:
Seat Belt Buckle Switch (BS). Description and Operation
Description
The SRSCM shall monitor the status of the driver and front passenger seat
belt buckle. The SRSCM provides one pin each for the driver and front passenger
seat belt buckle status ...
Manifold Absolute Pressure Sensor (MAPS). Schematic Diagrams
Circuit Diagram
...
Emission control system
The emission control system of your vehicle is covered by a written limited warranty.
Please see the warranty information contained in the Owner’s Handbook & Warranty
Information booklet in ...