· Engine speed <
6520 rpm
· The control unit
receives a signal > 435.2 kg/h from the mass air flow sensor
(short circuit to battery voltage)
If trouble code 74 was recognized, the control unit
calculates for the load signal with a replacement characteristic curve
dependent on the engine speed and throttle valve position.
If the throttle valve potentiometer is also defective, the
following replacement values are used for calculation:
For engine speed < 1520 rpm with load signal = 2.5 ms
For engine speed > 1520 rpm with load signal = 4.8 ms
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