| DTC Strategy |
Case1 |
- Rationality check, signal low
|
- Poor connector connection
- ECTS
|
| Case2 |
- Rationality check, signal high
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| Case3 |
|
| Enable Conditions |
Case1 |
- ECT at engine start is less than 76°C (168°F)
- Auxiliary battery voltage (6 to 16V)
|
| Case2 |
- ECT at engine start is greater than 76°C (168°F)
- Auxiliary battery voltage (11 to 16V)
- IAT at engine start is between -10 to 70°C (14 to 168°F)
- Ambient air temperature is greater than -10°C (14°F)
- Ambient air temperature is greater than -10°C (14°F)
- Engine speed is greater than 1400rpm
- Vehicle speed is greater than 19km/h (22MPH)
- Mass air flow is greater than 5.5g/s
- Low load driving condition
- Fuel cut off or idle with vehicle speed is less than 19km/h (12MPH)
|
| Case3 |
- Auxiliary battery voltage (6 to 16V)
- Engine stop time is greater than 6 hour
- Engine coolant temperature decrease in 35s after start is less than 1.4°C (34.5°F)
|
| Threshold Value |
Case1 |
- When the measured coolant temperature increase value is less than 0.75°C (33°F) to 35°C (95°F) (Value changes according to coolant temperature at initial engine start)
|
| Case2 |
- ECT variation since engine start is less than 2.25°C (36°F)
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| Case3 |
- The difference between ECT and IAT or NAT is greater than 20°C (68°F)
- The difference between IAT and NAT is less than 20°C (68°F)
|
| Diagnostic Time |
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| MIL ON Condition |
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