ECM monitors temperature changes resulting from soaking the vehicle. Therefore, Coolant temperature and Intake temperature should be changed. If ECM detects intake air temperature correlated to coolant temperature does not change ECM determines that a fault exists and a DTC is stored.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal check, low | 1. Poor connection 2. IATS | |
Case1 | Enable Conditions |
•
Time elapsed after start af＜ 40 sec | |
Threshold Value |
•
IAT – ECTS > 20.3℃ | ||
Case2 | Enable Conditions |
•
Vehicle speed < 3mph for 15sec ≥ 4 times
•
Vehicle speed > 30mph for 8sec ≥ 2 times | |
Threshold Value |
•
Max. temp – Min. temp < 1.5℃ | ||
Diagnostic Time |
•
2 sec | ||
MIL ON Condition |
•
3 driving cycle | ||
