SYMPTOM DIAGNOSIS
| CAUTION | When battery is disconnected, vehicle computer may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES - HYUNDAI article in GENERAL INFORMATION before disconnecting the battery. |
Symptom checks cannot be used properly unless the problem occurs while the vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC DIAGNOSTIC PROCEDURES article and appropriate SELF-DIAGNOSTICS article were performed before diagnosing a symptom. Symptoms available for diagnosis include the following
- «Hard To Start Or Will Not Start»(ref-152031-S33157066332003011300000)
- «Rough Idle Or Engine Stalls»(ref-152031-S28249573092003011300000)
- «Engine Hesitates Or Accelerates Poorly»(ref-152031-S03187491062003011300000)
- «Hard To Refuel/Overflowing Or Spit-Back While Refueling»(ref-152031-S19954393352003011300000)
PROBLEM DIAGNOSIS
Intermittent fault testing requires duplicating circuit or component failure to identify problem. These procedures may lead to computer setting a fault code (on some systems) which may help in diagnosis.
If problem vehicle does not produce fault codes, monitor voltage or resistance values using a DVOM while attempting to reproduce conditions causing intermittent fault. A status change on DVOM indicates a fault has been located.
Use a DVOM to pinpoint faults. When monitoring voltage, ensure ignition switch is in ON position or engine is running. Ensure ignition switch is in OFF position or negative battery cable is disconnected when monitoring circuit resistance. Status changes on DVOM during test procedures indicate area of fault.