| DTC Strategy |
- Determines if the oil temperature value is rational, compared to coolant and intake air temperature
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| Case 1 |
Enable Conditions |
- Battery voltage is between 6V and 16V
- Difference between highest and lowest modeled oil temperature is greater than 30~100°C (86 ~212°F)
- Engine Coolant temperature (ECT) or modeled Engine Coolant temperature is greater than 90°C (194°F)
- Engine Coolant temperature (ECT) at engine start is lower than 53.25° C (127.85°F)
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| Threshold Value |
- Difference between highest and lowest measured oil temperature is lower than 2~35°C (35.6~95°F)
- Sensor signal is stuck in range
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| Diagnosis Time |
- ~13m depending on start temperature
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| Case 2 |
Enable Conditions |
- Battery voltage is between 6V and 16V
- Engine Coolant temperature (ECT) at engine start is less than 40°C (104°F)
- Modeled oil temperature is greater than 70°C (158°F)
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| Threshold Value |
- Engine Oil temperature (EOT) is lower than 20°C (68°F)
- Sensor signal is implausibly low
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| Diagnosis Time |
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| Case 3 |
Enable Condition |
- Battery voltage is between 6V and 16V
- Engine Coolant temperature (ECT) is lower than 70°C (158°F)
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| Threshold Value |
- Engine Oil temperature (EOT) is greater than 100°C (212°F)
- Sensor signal is implausibly high
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| Diagnosis Time |
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| Case 4 |
Enable Conditions |
- Battery voltage is between 11V and 16V
- Engine Stop time is more than 480m
- ECT decrease in 15s after engine start is less than 2°C (35.6°F)
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| Threshold Value |
- Deviation between EOT and 3 other temperature sensors (ECT, AAT, IAT) is greater than 20°C (68°F) and
- Deviation among other temperature sensors (ECT, AAT, IAT) is lower than 20°C (68°F)
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| Diagnosis Time |
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| MIL On Condition |
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