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· Engine
not in operating condition: Start
· Engine
speed greater than 520 rpm
· Mass
air flow signal less than 3.0 kg/h
(Short circuit to ground)
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
1000 rpm with load signal = 2.0 ms
For engine speed higher than
1000 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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