Signal Circuit Inspection
- Ignition switch OFF.
- Disconnect HO2S (S1/B1) connector and ECM connector.
- Measure the resistance between both ends of the HO2S (S1/B1) Nernst Voltage terminal harness.
Measure the resistance between both ends of the HO2S (S1/B1) Virtual Ground Output terminal harness.
Measure the resistance between both ends of the HO2S (S1/B1) Current Adjust terminal harness.
Measure the resistance between both ends of the HO2S (S1/B1) Current Pump terminal harness.
Specification : Approx. 0Ω
- Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION ".
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR "