DTC Information: DTC Detecting Condition

Item		Detecting Condition	Possible Cause
DTC Strategy	Case 1	Rationality check, high side	Poor connector connection Short to ground in harness IATS ECM/PCM
	Case 2	Rationality check, noisy
	Case 3	Check ECT, IAT, AAT Correlation
	Case 4	Monitor at cold condition
Enable Conditions	Case 1, 2	(A) Vehicle speed is greater than 50km/h (B) Air mass flow is at between 24kg/h and 300kg/h Time after (A) + (B) is greater than 8s
Enable Conditions	Case 3, 4	Soaking time engine stop @ ECT 0°C is greater than 5h Engine stop @ ECT 90°C (194°F) is greater than 7h Block heater: Not detected ECT is less than 50°C (122°F) Difference of ECT and ECT at Start is less than -1.5°C (29.3°F) Time after engine start 30s
Threshold Value	Case 1	Intake Air Temperature is greater than 110°C (230°F)
	Case 2	Absolute value of difference of raw IAT and filtered IAT is greater than 0.498V
	Case 3, 4	Absolute value of difference of Reference temp and IAT is greater than 20°C (68°F) * Ref temp: 2 of 3 Signals are selected and averaged, and the other Signal which has the biggest deviation is excluded
Diagnostic Time	Case 1	8s
	Case 2	7s
	Case 3, 4	5s
MIL ON Condition		3 driving cycles