Ground Circuit Inspection

IG "OFF".
Disconnect HO2S (B1/S1) connector.
Measure resistance between terminal 1 of HO2S (B1/S1) and chassis ground.
Specification: Approx. below 1Ω

Fig 1: Measuring Resistance Between Terminal 1 Of HO2S (B1/S1) And Chassis Ground
Courtesy of HYUNDAI MOTOR CO.
Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.