Control Circuit Inspection
- Measure voltage between control terminal of the HO2S heater harness connector and chassis ground.
Specification: Approx. 2.4V
- Is voltage within specification?
YES
- Go to next step as below.
NO
- Repair or replace as necessary and go to "Verification Of Vehicle Repair " procedure.
NOTE: HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire (s). Do not attempt to repair the wire (s), connector, or the terminals.