Power Circuit Inspection
- Turn the ignition switch "OFF" & Disconnect HO2S (S2) connector.
- Turn the ignition switch "ON" & ENG "OFF".
- Measure voltage between power terminal of HO2S (S2) heater harness connector and chassis ground.
Specification: Battery Voltage
- Is the measured voltage within specification?
YES
- Go to "Control Circuit Inspection ".
NO
- Repair relevant component (s) as necessary and then go to "Verification of Vehicle Repair ".