STEYR MOTORS Marine Engine 2012 Series, Service Manual

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General
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Diagnostic system
The electronic management system monitors the following engine parameters:
oil pressure, boost pressure, coolant temperature, sensor control rack, potentiometer
accelerator, speed signal
The electronic management system carries out self-diagnostic and/or plausibility checks
for all input values and sensor connections. In case of irregularities, there is an optical or
audible warning signal. (Note: if prepare and installed by vehicle manufacturer)
Existing active failures remain stored until the problem has been solved. Service code has
been cleared from the memory to receive actual error code status.
To select stored service codes, a PC with diagnostic program (VR00134/0) or diagnostic
tool (VR00135/1) is necessary or a SCC (P/No 2179497-0) must be connected.
Malfunction during operation is categorised in three different categories intermittent failure,
non essential failure and essential failure. The EMS will memorize such errors and if
required reduce performance of the engine while operating in a fatal range to its system.
Interacting components of engine management system (ECU to unit injector)
Steyr-Control-Centre P/No 2179497-0 (front view)