Hyundai Sonata 1991 Shop Manual page 182

Trouble Symptom 3
AUTOMATIC SPEED CONTROL (CRUISE)
Trouble symptom
Probable cause Remedy
o The set vehicle speed varies greatly
Malfunction of the vehicle Repair the vehicle speed sen-
upward or downward speed sensor circuit
sor system, or replace the part
o "Hunching" (repeated alternating
Malfunction of the speedome-
acceleration and deceleration)
occurs after setting is made
ter cable or speedometer drive
gear
Actuator circuit poor contact Repair the actuator system, or
Malfunction of the actuator
replace the part
Malfunction of the ECU Replace the ECU
Trouble Symptom 4
Trouble symptom
Probable cause
Remedy
The ASC system is not canceled when
Damaged or disconnected wir- Repair the harness or replace
the brake pedal is depressed ing of the stop lamp switch
the stop lamp switch
Actuator drive circuit short cir- Repair the harness or replace
cuit
the actuator
Malfunction of the ECU Replace the ECU
Trouble Symptom 5
Trouble symptom
Probable cause
Remedy
The ASC system is not canceled when
Damaged or disconnected wir-
Repair the harness, or repair or
the clutch pedal is depressed (Vehicles
ing of clutch switch input cir-
replace the clutch switch
with a manual transaxle) (It is cance-
cuit
led, however, when the brake pedal is
Clutch switch installation mal-
depressed)
function (won't switch ON)
Malfunction of the ECU
Replace the ECU
27-63
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