The purpose of this diagnosis is to detect intake air temperature signal stuck. ECM sets DTC P0111 when the variation of measured intake air temperature from engine start is smaller than threshold while variation of calculated intake air temperature by ECM is greater than threshold.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Rationality check | 1. Poor connector connection 2. Short to ground in signal circuit 3. Faulty Intake Air Temperature (IAT) sensor |
Enable Condition |
•
10 sec. for vehicle speed less than 5 km/h (3mph) and the number of driving condition for over 3 times
•
5 sec. for vehicle speed higher than 48 km/h (30mph) and the number of driving condition for over twice | |
Threshold Value |
•
Deviation of the maximum temperature and the minimum temperature is lower than 1.5℃(34.7℉) | |
Diagnosis Time |
•
Continuous | |
MIL ON Condition |
•
3 driving cycles |
