Malfunction Threshold

A malfunction is detected if the following conditions are present after the engine has stopped and the vehicle condition has been turned to the OFF (LOCK) mode for at least 6 hours before restarting the engine:

Temperature difference between each sensor values		Malfunction judgment
ECT sensor 1 - ECT sensor 2	IAT sensor 2 - ECT sensor 2	ECT sensor 1	IAT sensor 2	ECT sensor 2
Higher than 57 deg.F (32 deg.C)	Higher than 57 deg.F (32 deg.C)	Normal	Normal	Failure
	From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C)	Failure	Normal	Normal
	Lower than -43 deg.F (-24 deg.C)	Failure	Failure	Normal
From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C)	Higher than 57 deg.F (32 deg.C)	Normal	Failure	Normal
	From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C)	Normal	Normal	Normal
	Lower than -43 deg.F (-24 deg.C)	Normal	Failure	Normal
Lower than -43 deg.F (-24 deg.C)	Higher than 57 deg.F (32 deg.C)	Failure	Failure	Normal
	From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C)	Failure	Normal	Normal
	Lower than -43 deg.F (-24 deg.C)	Normal	Normal	Failure

When the IAT sensor 2 is normal 10 seconds after starting the engine, the IAT 2 sensor is used to detect malfunction in the IAT sensor 1.

Temperature difference between each sensor values	Malfunction judgment
IAT sensor 1- IAT sensor 2	ECT sensor 1
Higher than 57 deg.F (32 deg.C)	Failure
From -43 deg.F (-24 deg.C) to 57 deg.F (32 deg.C)	Normal
Lower than -43 deg.F (-24 deg.C)	Failure