Hyundai GENESIS COUPE BK 2010 Manual page 519

Terminal and Connector Inspection
1. Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by
interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or
damage.
3. Has a problem been found?
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure .
▶ Go to "Component Inspection" procedure.
Component Inspection
■ Check HO2S(B2/S1) Heater resistance
1. IG "OFF" and disconnect HO2S(B2/S1) connector
2. Measure resistance between power and control terminals of HO2S(B2/S1) heater(Component Side)
Specification : 8.1 ~ 11.1 Ω at 21°C(69.8°F)
3. Is the measured resistance within specification?
▶ Substitute with a known - good ECM and check for proper operation. If the problem is
corrected, go to "Verification of Vehicle Repair" procedure.
▶ Substitute with a known - good HO2S and check for proper operation. If the problem is
corrected, go to "Verification of Vehicle Repair" procedure.
Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1. Connect GDS and select "DTC" button.
2. Press "DTC Status" button and confirm that "DTC Readiness Flag" indicates "Completed". If not, drive the vehicle
within conditions noted in the freeze frame data or enable conditions.
3. Read "DTC Status" parameter.
4. Is parameter displayed "History(Not Present) fault"?
▶ System performing to specification at this time. Clear the DTC.
▶ Go to the applicable troubleshooting procedure.
Fuel System > Engine Control System > P0051 HO2S Heater Control Circuit Low (Bank 2 /
There is a memory reset function on GDS that can erase optional parts automatically
detected and memorized by ECM. Before or after testing ECM on the vehicle, use this
function to reuse the ECM on the others