| DTC Strategy |
- Monitor the engine coolant temperature
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- ECTS
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| Enable Conditions |
Case1 |
- Shutdown time > 180 minutes
- Intake air-temperature at start-up < 40°C (104°F)
- No disabling faults (ECTS)
- Engine running > 60 seconds
- Minimum airflow is satisfied for a certain time.
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| Case2 |
- Coolant sensor is normal
- No disabling faults present (DTCs related to MAFS/MAPS, catalyst, fuel system or engine oil temperature sensor)
- Coolant Temperature at startup < 45°C (113 °F)
- Engine running state
- Coolant temperature > 50°C (122°F)
- Intake air temperature < 35°C (95°F)
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| Case3 |
- Engine running state
- Before startup, leave it under IG-OFF over 6 hours
- No disabling faults (DTCs related to HO2S, MAFS/MAPS, catalyst, fuel system, ECTS, or misfire)
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| Threshold value |
Case1 |
- When the start-up engine coolant temperature does not rise by 1.5°C (2.7°F).
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| Case2 |
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| Case3 |
- The difference between the current its temperature and the startup temperature < 1.5°C (2.7°F)
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| Diagnosis Time |
Case1 |
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| Case2 |
- Once per driving cycle (about 2 minutes)
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| Case3 |
- Once per driving cycle (More than 120 seconds failure)
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| MIL On Condition |
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