| DTC Strategy |
|
- Poor connection
- B1S2
- ECM
|
| Case 1 |
Enable Condition |
- Battery voltage is higher than 11V
- Engine speed is between 1200 RPM and 3520 RPM
- EGT around downstream O2S is higher than 400°C (752°F)
- Exhaust gas mass flow is higher than 12 kg/h
- Total flow exhaust gas: -90 kg/h ~ 90 kg/h
- Fuel cut off
- Downstream O2S voltage before fuel cut is higher than 0.55V
- Fuel shut-off time 15 seconds or less
- Sensor the voltage below 0.85V
|
| Threshold Value |
- When the oxygen sensor (down) voltage is output from 0.6V to 0.15V for more than 0.4 second during fuel shutdown, or when the oxygen sensor (down) voltage (0.6V) during fuel shutdown exceeds the specified value
|
| Case 2 |
Enable Condition |
- Battery voltage is higher than 11V
- Engine speed is between 1200 RPM and 3520 RPM
- EGT around downstream O2S is higher than 400°C (752°F)
- Exhaust gas mass flow is higher than 22 kg/h
- Total flow exhaust gas: -15 kg/h ~ 50 kg/h
- Fuel cut off
- Downstream O2S voltage before fuel cut is higher than 0.15V
- Fuel shut-off time 15 seconds or less
|
| Threshold Value |
- When the oxygen sensor (down) voltage is output from 0.15V to 0.6V for more than 0.5 second after the fuel cut-off, or when the oxygen sensor (down) voltage is 0.15V after the fuel cut-off exceeds the specified value
|
| Diagnostic Time |
- 3 valid fuel cut-off phases
|
| MIL ON Condition |
|