Deutz EMR 2, Описание системы, Страница: 29 / 60

© 06/02
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EMR 2
Diagnostic Button and
Fault Indicator Lamp
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7 Diagnostic Button and Fault Indicator Lamp
Diagnostic button and fault indicator lamp must be placed in the vehicle or plant on the customer side.
They can be used for diagnosis.
7.1 Self-diagnostic (without operating the diagnostic button)
The EMR 2 possesses numerous protection functions for the engine - depending on the available measu-
ring points or sensors. Depending on the seriousness of the recognized fault, the engine may run on in
reduced mode (limp home), whereby the fault indicator lamp is continuously lit, or the engine is switched
off, whereby the fault indicator lamp flashes.
A lit fault indicator lamp indicates an error in the wiring (short circuit, cable break) or a defect in the displays
of the corresponding sensors. A further source of faults could be falling below or exceeding the measuring
value limits (see Chapter 9.4).
Faults in the electronics are registered or stored in the control unit and shown by the fault indicator lamp.
The fault indicator lamp is extinguished as soon as the fault has been removed. Only when the electronics
has been switched to emergency running (-speed), need the engine be switched off briefly with the key-
operated switch in order to extinguish the fault indicator lamp.
Also corrected or non-current faults remain stored in the control unit and can be read out or deleted with
the SERDIA diagnostic software (see Chapter 7.3).
+U
Batt
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Diagnostic button switch diagram
Pin F 4
Fault indicator lamp
Diagnostic button
GND -U
Batt
© 06/02