| DTC Strategy |
Case 1 |
- Plausibility monitoring (low side)
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- Poor connector connection
- Open or short circuit
- Faulty coolant temperature sensor #2
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| Case 2 |
- Plausibility monitoring (high side)
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| Case 3 |
- Plausibility monitoring (stuck)
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| Case 4 |
- Monitor coolant temperature and intake air temperature
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| Enable Conditions |
Case 1 |
- Deviation between present coolant temperature and coolant temperature when engine running is lower than -1.5°C (29.3°F)
- Coolant temperature is lower than 50.25°C (122.45°F)
- Engine running time is less than 30s
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| Case 2 |
- Amount of air flow (accumulation) is more than 2.0kg
- Coolant temperature #2 is higher than 82.5°C (180.5°F)
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| Case 3 |
- Coolant temperature is -10.5°C to 75°C (13.1°F to 167°F) at engine start
- (A) Vehicle speed is 40km/h to 180km/h (24.8 mph to 111.8 mph)
- (B) Amount of air flow is 6.7g/s to 83.3g/s
- (C) Satisfied with the (A) and (B) condition is more than 18s
- Satisfied with the (C) condition is more than 4 times
- (D) Vehicle speed is 0km/h to 5km/h (0 mph to 3.1 mph)
- (E) Amount of air flow is 1.1g/s to 4.4g/s
- (F) Satisfied with the (D) and (E) condition is more than 18s
- Satisfied with the (C) condition is more than 4 times
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| Case 4 |
- Engine "OFF' (5 hours)
- Deviation between present coolant temperature and coolant temperature when engine running is lower than -1.5°C (29.3°F)
- Coolant temperature is lower than 50.25°C (122.45°F)
- Engine running time is less than 30s
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| Threshold Value |
Case 1 |
- Deviation between actual coolant temperature and target coolant temperature #2 is lower than -10.5°C (13.1°F)
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| Case 2 |
- Deviation between actual coolant temperature and target coolant temperature #2 is higher than 13.5°C (56.3°F)
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| Case 3 |
- Deviation between actual coolant temperature and target coolant temperature #2 is lower than -0.8°C (30.56°F)
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| Case 4 |
- Deviation between average temperature (coolant temperature and intake air temperature) when engine running and coolant temperature #2 is higher than 20°C (68°F)
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| Diagnostic Time |
Case 1 |
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| Case 2 |
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| Case 3 |
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| Case 4 |
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| MIL ON Condition |
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