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Malfunction Threshold

One of these conditions occurs.

There is no return from the ATFP control unit to the PCM for 2 seconds.
At least 50 % of the data that the PCM received from the ATFP driver unit is abnormal for 3 seconds continuously.
At least 50 % of the data that the ATFP control unit received from the PCM is abnormal for 5 seconds continuously.