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· Engine speed higher than
672 rpm
· Mass air flow meter
signal higher than 505 kg/ h (short circuit to voltage)
· Conditions must be
fulfilled for at least 3 s
Replacement
values:
· Trouble codes 21 and 22
not recognised:
The control unit calculates with an air mass computed internally
from the engine speed and the throttle valve angle
· Trouble code 21 or 22
recognised:
The control unit calculates with an air mass resulting from the
engine speed
Effects:
· With the exception of
throttle valve adaptation, all adaptation is blocked
· Tank vent valve
regulation is blocked
If trouble
codes 21 or 22 were recognised:
· Oxygen sensor regulation
is blocked
Note:
In case of a
fault, the system immediately switches to emergency operation.
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