Control Circuit Inspection
- Ignition "OFF".
- Disconnect HO2S (S1) connector.
- Ignition "ON".
- Measure voltage between Pin No. 5 (Control) terminal of HO2S (S1) harness connector and chassis ground.
Specification: Approx. 3.5V
- Is the measured voltage within specification?
YES
- Go to "Component Inspection " procedure.
NO
- Repair or replace as necessary and then, go to "Verification of Vehicle Repair " procedure.