| Case1) |
DTC Strategy |
- Signal plausibility during fuel cut off
|
- Related fuse blown or missing
- Contact resistance in connectors
- HO2S contamination
|
| Enable Conditions |
- (VLS_DOWN > 0.68V or < 0.21V) or Catalyst model temp > 500 °C
- Sensor preheating and full heating phases finished
- In fuel cut off phase
- In fuel cut off active
- 20g < Integrated mass air flow < 200g
- No relevant failure
- 10V < Battery voltage < 16V
|
| Threshold Value |
- Voltage with fuel cut off > 0.1V
|
| Diagnostic Time |
|
| Case2) |
DTC Strategy |
- Signal plausibility during full load
|
| Enable Conditions |
- (VLS_DOWN > 0.68V or < 0.21V) or Catalyst model temp > 500°C
- Sensor preheating and full heating phases finished
- 70g < Integrated mass air flow since begin full load < 300g
- No relevant failure
- 11V < Battery voltage < 16V
|
| Threshold Value |
- Voltage with full load < 0.70V
|
| Diagnostic Time |
|
| Case3) |
DTC Strategy |
- Signal plausibility after fuel cut off
|
| Enable Conditions |
- Integrated engine load in fuel cut off > 8g
- Integrated engine load after fuel cut off > 12g
- Coolant temperature > 74°C(165°F)
- (VLS_DOWN > 0.68V or < 0.21V) or Catalyst model temp > 500°C
- 4.82 km(3mph) < Vehicle speed < 180km/h(112mph)
- Catalyst temperature > 350°C(662°F)
- No relevant failure
- 11V < Battery voltage < 16V
|
| Threshold Value |
- Sensor signal increase < 10mV
|
| Diagnostic Time |
- 5 after fuel cut off phase
|