Ground Circuit Inspection

IG "ON" and disconnect HO2S(B2/S2) connector.
Measure voltage between terminal 3 of HO2S(B2/S2) harness connector and chassis ground.
Measure voltage between terminals 3 and 4 of HO2S(B2/S2) harness connector.
Specification: Voltage difference between measurement "A" and "B" is below 200mV.

Fig 1: Measuring Voltage Between Terminal 3 Of HO2S(B2/S2) Harness Connector And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.
Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair open in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.