| DTC Strategy |
Case 1 |
- Pumping line circuit open at target lambda=1
|
- Poor connector connection or damaged harness
- Open in HO2S control circuit
- Front HO2S
|
| Case 2 |
- Pumping line circuit open at target lambda
1
|
| Case 3 |
- Pumping line circuit open at rich or lean side
|
| Enable Conditions |
Case 1 |
- Fuel system status is closed loop
- Differential of fuel factor is greater than 15%
- Internal resistance signal is same as valid
|
| Case 2 |
- Target lambda is less than -3%
- Target lambda is greater than 3%
|
| Case 3 |
- Nernst voltage is higher than 0.47V or lower than 0.43V
|
| Threshold Value |
Case 1, 2 |
- Sensor voltage is between 2.48V and 2.5V
|
| Case 3 |
- Nernst voltage is less than 1V
- Nernst voltage is greater than 4V
|
| Diagnostic Time |
Case 1 |
|
| Case 2 |
|
| Case 3 |
|
| MIL ON Condition |
|