Detection Condition

• PCM compares actual input signal from Mass Airflow (MAF) sensor with expected input signal from MAF sensor which PCM calculates by engine speed. If mass intake airflow amount is more than 83.5 grams/sec. (more than 123.1 grams/sec. if equipped with traction control) for 5 seconds and engine speed is less than 2000 RPM with engine running, PCM determines detected mass intake airflow amount is too high.
• PCM compares actual input signal from MAF sensor with expected input signal from MAF sensor which PCM calculates by input voltage from TP sensor. If mass intake airflow amount is less than 5 grams/sec. for 5 seconds and throttle opening angle is more than 50 percent with engine running, PCM determines detected mass intake airflow amount is too low.

This is a Continuous Monitor (CM). MIL is illuminated when PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction condition during first drive cycle. Freeze frame data is available and DTC is stored in PCM memory.