Pumping Current Circuit Inspection
- Ignition "OFF"
- Disconnect HO2S and PCM connectors.
- Measure resistance between terminals 4 of the sensor harness connector and 19 of the PCM harness connector
Specification : Approx. 0Ω
- Is resistance within the specification?
YES
- Go to TERMINAL AND CONNECTOR INSPECTION procedure
NO
- Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure