Hyundai GENESIS COUPE BK 2010 Manual page 753

Component Inspection
■ Check the Signal waveform of HO2S
1. IG "OFF" and connect HO2S connector.
2. Engine start.
3. After warming-up, monitor signal waveform of HO2S with GDS.
4. Is the sensor switching properly ?
▶ Go to "Check HO2S" as below.
▶ Substitute with a known - good HO2S and check for proper operation. If the problem is
corrected, go to "Verification of Vehicle Repair" procedure.
■ Check HO2S
1. IG "OFF" and disconnect HO2S connector.
2. Check that the HO2S is securely installed.
3. Check the HO2S for contamination or damage
4. Is the sensor normal ?
▶ Substitute with a known - good ECM and check for proper operation. If the problem is
corrected,
replace ECM and go to "Verification of Vehicle Repair" procedure.