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· Engine
speed lower than 6520 rpm
· Mass
air flow meter signal is greater than 589 kg/h
(short circuit to voltage)
Replacement values:
· The
control unit calculates for the load signal using a replacement
characteristic curve depending on the engine speed and the throttle valve
angle.
· If
the throttle valve potentiometer is also defective, the following replacement
values are used for calculation:
X 25 XE:
For engine speed lower than
1 000 rpm with load signal = 2.0 ms
For engine speed higher than
1 000 rpm with load signal = 3.0 ms
X 30 XE:
For engine speed lower than
2000 rpm with load signal = 2.0 ms
For engine speed higher than
2000 rpm with load signal = 3.0 ms
Note:
The fault can generally be
expected to be caused by defects in the wiring.
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