Hyundai GENESIS COUPE BK 2010 Manual page 532

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 "Control Circuit Inspection" procedure.
Control Circuit Inspection
■ Check voltage
1. IG "OFF" & Disconnect HO2S(B2/S1) connector.
2. IG "ON".
3. Measure voltage between control terminal of HO2S(B2/S1) heater harness connector and chassis ground.
Specification : Approx. 3.5 V
4. Is the measured voltage within specification ?
▶ Go to "Component Inspection" procedure.
▶ Repair short to battery in HO2S(B2/S1) Heater control circuit and go to "Verification of Vhicle
Repair" 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.
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