Ground Circuit Inspection
- IG "ON" and disconnect HO2S(B1/S2) connector.
- Measure voltage between terminal 3 of HO2S(B1/S2) harness connector and chassis ground.
- Measure voltage between terminals 3 and 4 of HO2S(B1/S2) harness connector.
Specification: Voltage difference between measurement "A" and "B" is below 200mV.
- Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair open or contact resistance in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.