Control Circuit Inspection
- Turn "OFF" the ignition switch.
- Disconnect HO2S connector.
- Turn "ON" the ignition switch.
- Measure voltage between VG terminal of the sensor harness connector and chassis ground
Specification : Approx. 2~3V
- Measure resistance between VG terminal and other terminals of the HO2S harness connector.
Specification : Infinite ∞Ω
- Is HO2S display near the 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.