| DTC Strategy |
Case1 |
- Rationality check. low side
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- Poor connector connection
- ECTS #2
- Short/open circuit
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| Case2 |
- Rationality check. high side
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| Case3 |
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| Case4 |
- Check ECT, ECTS #2 and IAT correlation
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| Enable Conditions |
Case1 |
- Difference between ECT and ECT at start is less than -4.5°C (23.9°F)
- ECT is less than 50.25°C (122.45°F)
- Time after engine start is less than 30s
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| Case2 |
- Engine speed is higher than 400RPM
- Integrated intake flow is higher than 1000g
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| Case3 |
- ECTS #2 at start is between -10.5 and 75°C (13.1 and 167°F)
- (A) Vehicle speed is between 40 and 180km/h (25 and 111.8mph)
- (B) Air mass flow is between 6.7 and 83.3g/s
- (C) Total Time with condition (A) + (B) is greater than 18s
- Total number of condition (C) is greater than 5 times
- (D) Vehicle speed is 0 and 5km/h (0 and 3mph)
- (E) Air mass flow is between 1.1 and 4.4g/s
- (F) Total time with condition (E) + (F) is greater than 18s
- Total number of condition (G) is greater than 3 times
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| Case4 |
- After 6 hours or more after turning off the engine
- Difference between ECT and ECT at start is less than -4.5°C (23.9°F)
- ECT is less than 50.25°C (122.45°F)
- Time after engine start is less than 30s
|
| Threshold Value |
Case1 |
- Difference between ECTS #2 and modelled ECTS #2 (low side) is greater than -15°C (23.8°F)
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| Case2 |
- Difference between ECTS #2 and modelled ECTS #2 (high side) is greater than 13.5°C (56.3°F)
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| Case3 |
- Difference between Max. ECTS #2 and Min. ECTS #2 is less than 0.8°C (33.44°F)
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| Case4 |
- Absolute value of difference between C_Temp and ECTS #2 at start is greater than 20°C (68°F)
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| Diagnostic Time |
Case1 |
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| Case2 |
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| Case3 |
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| Case4 |
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| MIL ON Condition |
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