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 |
•
Rationality check | 1. Poor connection 2. IATS | |
Case 1 | Enable Conditions |
•
Elapsed time after start is lower than 40 sec. | |
Threshold Value |
•
The temperature difference between IAT and ECTS is lower than 20.3 ℃ | ||
Case 2 | Enable Conditions |
•
Number of driving conditions for at least 15 sec at a speed less than 3mph is greater than 4 times.
•
Number of driving conditions for at least 8 sec at speed higher than 30mph is greater than twice. | |
Threshold Value |
•
The maximum temperature and minimum temperature difference value is lower than 1.5℃. | ||
Diagnostic Time |
•
2 sec. | ||
MIL ON Condition |
•
2 Drive Cycle | ||
