Circuit/System Verification
- Engine idling.
- Verify the parameters listed below do not display Malfunction.
- HO2S 1 or 2 Heater Control Circuit Low Voltage Test Status
- HO2S 1 or 2 Heater Control Circuit Open Test Status
- HO2S 1 or 2 Heater Control Circuit High Voltage Test Status
- If Malfunction is displayed
Refer to Circuit/System Testing .
- If Malfunction is not displayed
- Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
- Verify the DTC does not set.
- If the DTC sets
Refer to Circuit/System Testing .
- If the DTC does not set
- If the DTC sets
- All OK.