| DTC Strategy |
Case1 |
|
- Poor connector connection
- Short circuit
- Faulty upstream O2 sensor
|
| Case2 |
- Rationality check, high side
|
| Case3 |
- Rationality check, low side
|
| Case4 |
- Rationality check (Stuck)
|
| Enable Conditions |
Case1 |
- No fuel cut
- Normal battery voltage (10 to 16V)
- Fuel system is close loop
- Start engine and wait for 20s
|
| Case2 to 4 |
- Fuel system is close loop
- Integrated exhaust flow is higher than 1000g
|
| Threshold Value |
Case1 |
- When heated oxygen sensor (B1S1) signal voltage is between 1.58V and 1.84V
|
| Case2 |
- When heated oxygen sensor (B1S1) signal voltage is lower than 0.55V
- When heated oxygen sensor (B1S2) signal voltage is higher than 0.75V
|
| Case3 |
- When heated oxygen sensor (B1S1) signal voltage is between 0.7V and 1.80V
- When heated oxygen sensor (B1S2) signal voltage is lower than 0.25V
|
| Case4 |
- When heated oxygen sensor (B1S1) signal voltage is between 0.45V and 0.65V
|
| Diagnostic Time |
|
| MIL ON Condition |
|