Current Pump Circuit Inspection
- Ignition switch OFF & Disconnect HO2S (S1) connector.
- Measure the resistance between both ends of the HO2S (S1) 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 ".