| DETECTION CONDITION |
- When the conditions are as follows, the PCM compares the intake airflow amount with the estimated intake airflow amount (calculated from the barometric pressure, MAP sensor and throttle opening angle).
MONITORING CONDITIONS
- Engine speed: below 4,500 rpm
- Barometric pressure divided by intake manifold absolute pressure: above 1.2
- Throttle position-throttle position before 15 ms
: below 10 %
- Battery voltage: above 8 V
- If over a period continuing for 5 s
, the cumulative value of the intake airflow amount divided by the estimated intake airflow amount is 1.35 or more, and intake airflow amount multiplied by the estimated intake airflow amount is 6 g/s {0.8 lb/min} or more
, the PCM determines that the detected mass air flow amount is above is too high.
- If over a period continuing for 5 s
, the cumulative value of the intake airflow amount divided by the estimated intake airflow amount is 0.65 or less, and intake airflow amount multiplied by the estimated intake airflow amount is 6 g/s {0.8 lb/min} or less
, the PCM determines that the detected mass air flow amount is above is too low.
Diagnostic support note
- This is a continuous monitor (CCM).
- The MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- The DTC is stored in the PCM memory.
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