DTC Detecting Condition and Trouble Area
DTC DETECTING CONDITION AND TROUBLE AREA
| DTC detecting condition | Trouble area |
|---|---|
| Ratio of integrated value of HO2S output variation per integrated value of A/F sensor output variation is more than specification while vehicle is running after warmed up. (2 driving cycle detection logic, monitoring once per driving cycle) |
|
WARNING:
- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester, on a level road.
NOTE:
Check to make sure that the following conditions are satisfied when using this "DTC Confirmation Procedure".
EVAP leak check model:
EVAP leak check model:
- Engine coolant temperature: 70 °C (158 °F) to 150 °C (302 °F)
- The following DTCs are not detected: DTCs related to A/F sensor and HO2S
Non-EVAP-leak-check model:
- Intake air temperature at engine start: -10 °C (14 °F) to 80 °C (176 °F)
- Intake air temperature: -10 °C (14 °F) to 70 °C (158 °F)
- Engine coolant temperature: 70 °C (158 °F) to 150 °C (302 °F)
- Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
- The following DTCs are not detected: DTCs related to ECT sensor, IAT sensor, MAF sensor, barometric pressure sensor, A/F sensor and VSS
- Connect scan tool to DLC with ignition switch turned OFF.
- Turn ON ignition switch and clear DTC using scan tool.
- Start engine and warm up to normal operating temperature.
- Increase vehicle speed to 50 - 60 mph (80 - 100 km/h).
- Keep above vehicle speed for 10 min. or more.
- Stop vehicle.
- Check whether catalyst readiness/monitoring test has completed or not by using scan tool. If catalyst readiness/monitoring test has not completed, check vehicle conditions (environmental) and repeat Steps 4) through 6).
- Check DTC and pending DTC.