| DTC Strategy |
Case 1 |
|
- Poor connector connection
- Short/open in upstream O2 sensor signal circuit
- Defected downstream O2 sensor
|
| Case 2 |
|
| Enable Condition |
Case 1 |
- Battery voltage is higher than 10.7V
- Exhaust gas temperature (Model) is at between 1112°F (600°C) and 1652°F (900°C)
|
| Case 2 |
- Battery voltage is higher than 10.7V
- Downstream O2 sensor voltage is at between 0.40V and 0.50V
- After sufficient time for sensor heating
|
| Threshold Value |
Case 1 |
- Internal resistance is higher than 40kΩ
|
| Case 2 |
- Average of loaded voltage is higher than 2.8V
|
| Diagnostic Time |
|
| MIL ON Condition |
|