Vertual Ground Output Circuit Inspection

IG KEY "OFF".
Disconnect HO2S (S1) connector.
IG KEY "ON" & ENG "OFF".
Measure the voltage between Vertual Ground Output terminal of HO2S (S1) harness connector and chassis ground.
Specification: Approx 2.5V

Fig 1: Measuring Voltage Between Vertual Ground Output Terminal Of HO2S (S1) Harness Connector And Chassis Ground
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured voltage within specification?
YES

Go to "COMPONENT INSPECTION " procedure.

NO

Repair Open or Short circuit and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.