![]() Mass or Volume Air Flow 'A' Air Mass Too Low Compared to ModelĪir mass sensor, signal: Implausible period duration, loose contact with low frequency Mass or Volume Air Flow 'A' Circuit Range/Performance - Air Flow Too Low The diagnostic function compares the air mass calculated from the model with the measured air Mass air flow sensor, plausibility: Air mass compared with model too low ![]() Mass or Volume Air Flow 'A' Air Mass Too High Compared to Model Mass or Volume Air Flow 'A' Circuit Range/Performance - Air Flow Too High The diagnostic function compares the calculated air mass with the measured air mass. Mass air flow sensor, plausibility: Air mass compared with model too high If this figure remains too high for a specified period, a fault is recognized and the throttle valve is deactivated. ![]() The diagnostic function monitors the difference between specified and actual throttle-valve values. Throttle valve, function: sluggish, too slow Throttle Valve Position Control Throttle Stuck Temporarily (Bank 1) That would indicate that the throttle valve is sticking or seizing. The diagnostic function monitors the throttle valve control signal for excessively high figures ![]() Throttle Valve Position Control Throttle Stuck Permanently (Bank 1) The diagnostic function checks the throttle valve's control signal for excessively high figures that would indicate that the throttle valve Throttle valve, function: jammed permanently ![]()
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