Detection Condition
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
The PCM monitors Mass Airflow/Intake Air Temperature (MAF/IAT) sensor signal at PCM 30-pin harness terminal "2E" (Blue/Black wire). If PCM detected MAF/IAT sensor voltage less than 0.16 volt, PCM determines MAF/IAT signal circuit has malfunction. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition during first drive cycle. PENDING CODE is available if PCM detects malfunction condition. FREEZE FRAME DATA is available. DTC is stored in PCM memory.