Power Circuit Inspection
- IG "OFF" & Disconnect HO2S (S1) connector.
- IG "ON".
- Measure voltage between Pin No. 2 (power) terminal of HO2S (S1) harness connector and chassis ground.
Specification: Approx 12V
- Is the measured voltage within specification?
YES
- Go to "CONTROL CIRCUIT INSPECTION " procedure
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.