Hyundai GENESIS COUPE BK 2010 Manual page 797

5. Is parameter displayed "Present fault" ?
▶ Go to "Terminal and Connector inspection" procedure.
▶ Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was
repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor
connection, ending, corrosion, contamination, deterioration, or damage. Repair or replace as
necessary and go to "Verification of Vehicle Repair" procedure.
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 "Signal Circuit Inspection" procedure.
Signal Circuit Inspection
■ Check voltage
1. IG "OFF" and disconnect HO2S(B2/S1) connector.
2. IG "ON".
3. Measure voltage between signal terminal of HO2S(B2/S1) harness connector and chassis ground.
Specification : Approx. 2.2V - when pumping current is ON
Approx. 0.45V - when pumping current is OFF
4. Is the measured voltage within specification ?
▶ Go to "Ground circuit inspection" procedure.
▶ Repair open in harness, and go to "Verification of Vehicle Repair" prcedure.
Ground Circuit Inspection