| 摘要 |
When it is predicted that the engine is going to be started in the near future, a heater portion of an air flow meter is energized so as to be heated in advance (step 106). Prior to the pre-heating, the intake air temperature TAFM is sensed by a temperature sensing portion of the air flow meter (step 104). After completion of start-up of an intake air temperature sensor, a difference between the intake air temperature TA sensed by the intake air temperature sensor and the previously sensed intake air temperature TAFM is obtained. When the difference is above a predetermined value, it is judged that the intake air temperature sensor or the air flow meter is in an abnormal condition (step 114).
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