Pumping Current Circuit Inspection
- IG "OFF" and disconnect HO2S (S1) connector and ECM connector.
- Check resistance between Pumping Current terminal of HO2S (S1) Connector and Pumping Current terminal of ECM connector.
Specification: Below 1Ω
- Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.