| Case1) |
DTC Strategy |
|
- Contact resistance in connections.
- Faulty ECT sensor
|
| Enable Conditions |
- 250 seconds after "START" in case of short circuit to B+ or open circuit when temperature of intake air is below -30°C (-22°F).
|
| Threshold Value |
- Modeled coolant temperature increase > Threshold But Measured coolant temperature increase < Threshold (Threshold depends on Coolant start temperature)
|
| Diagnostic Time |
|
| Case2) |
DTC Strategy |
- Signal Unplausible High with Long Soaking Condition
|
| Enable Conditions |
- No Relevant Failure
- Engine run Elapse of Previous driving cycle > 500sec. or ECT at Engine Stop of previous driving cycle > 85°C(185°F)
- IAT Signal Decrease Energy by Air Flow after Start < 50J
- Cumulative Time for IAT Signal Decrease Check (Air Flow > 60kg/h) > 70sec.
- Cumulative Time for IAT Signal Decrease Check (Vehicle Speed > 71km/h(44 mph)) > 100sec.
|
| Threshold Value |
- Measured coolant temperature with intake air temp. at previous driving cycle-intake air temp. at stat >12°C(54°F) is higher than 54°C(129°F)
|
| Diagnostic Time |
- Immediate if Enable Conditions Fulfilled
|