Ground Circuit Inspection
- IG "ON" and disconnect HO2S(B1/S2) connector.
- Measure voltage between signal terminal of HO2S(B1/S2) harness connector and chassis ground.(Measurement "A")
- Measure voltage between signal and ground terminals of HO2S(B1/S2) harness connector.(Measurement "B")
Specification: Voltage difference between measurement "A" and "B" is below 200mV.
- Is the measured voltage within specification?
YES
- Go to Component Inspection procedure below.
NO
- Repair contact resistance or open in harness and go to "Verification of Vehicle Repair " procedure.