Hyundai Elantra: Troubleshooting - Cruise Control System - Engine Electrical System - Hyundai Elantra HD 2006Ц2010 Service ManualHyundai Elantra: Troubleshooting


Troubleshooting

Before starting troubleshooting, inspect each of the following sections, and if there is an abnormality, carry out a repair.
1.
Check that the actuator and pulley assembly are all normal.
2.
Check if the pulley assembly and the movement of cables are working smoothly.
3.
Check if there is no excessive play or tension in each cable.
Troubleshooting Procedures
First, select the applicable malfunction symptom from the "TROUBLE SYMPTOM CHARTS" shown on nest pages.
Determine the condition of all function circuits.
1.
Make the following preliminary inspections.
A.
Check that the installation of the actuator, accelerator cable are correct, and that the cables and links are securely connected.
B.
Check that the accelerator pedal moves smootyly.
C.
Adjust the cable so there is not excessive tension or excessive play on the accelerator cable.
D.
Check that the actuator and unit assembly, cruise main, control switch and the connector of each cancel switch are connected securely.
2.
Check in the sequence indicated in the "TROUBLE SYMPTOM CHARTS".
3.
If a normal condition is indicated, replace the cruise control module.
Trouble Symptom Charts
Trouble Symptom 1

Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downwqrd
"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 the speedometer cable or speedometer drive gear
Malfunction of the actuator and unit
Replace the actuator and unit

Trouble Symptom 3
Trouble symptom
Probable cause
Remedy
The CC system is not canceled when the brake pedal is deprssed

Damaged or disconnected wiring of the stop lamp switch
Repair the harness or replace the stop lamp switch
Malfunction of the actuator and unit
Replace the actuator and unit

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 ingibitor switch

Improper adjustment of inhibitor switch
Malfunction of the actuator and unit
Replace the actuator and unit

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
Actuator circuit poor contact
Repair the harness or replace the actuator

Malfunction of the actuator
Malfunction of the actuator and unit
Replace the actuator and unit

Trouble Symptom 6
Trouble symptom
Probable cause
Remedy
Cannot accelerate or resume speed by using the RESUME switch



Damaged or disconnected wiring, or short circuit, or RESUME switch input circuit
Repair the harness or RESUME switch
Actuator circuit poor contact
Repair the harness or replace the actuator

Malfunction of the actuator
Malfunction of the actuator and unit
Replace the actuator and unit

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 speedometer cable or the speedometer drive gear
Malfunction of the actuator and unit
Replace the actuator and unit

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

Trouble Symptom 9
Trouble symptom
Probable cause
Remedy
Malfunction of control function by ON/OFF switching of idle switch

Malfunction of circuit related to idle switch function
Repair the narness or replace the part

Malfunction of the actuator and unit

Trouble Symptom 10
Trouble symptom
Probable cause
Remedy
Overdrive is not canceled during fixed speed driving
Malfunction of circuit related to overdrive cancellation, or malfunction of actuator and unit

Repair the harness or replace the part

No shift to overdrive during manual driving