Function Explanation (DTC Detection Outline)
- The MAF sensor corrects the intake airflow amount inside the sensor based on the IAT sensor No. 1 information. When there is an internal malfunction in IAT sensor No. 1, the MAF sensor determines that there is a malfunction in itself and it sends a malfunction signal to the PCM. When the PCM receives a malfunction signal from the MAF sensor/IAT sensor No. 1, the MAF sensor/IAT sensor No. 1 determines an internal malfunction and stores a DTC. In addition, when the PCM receives a value other than the preset standard for the output value from the MAF sensor continuously, the PCM determines that there is an internal malfunction in the MAF sensor/IAT sensor No. 1 and stores a DTC.