Mercedes-Benz OM 904 LA Operating Instructions Manual page 32

FR (drive control) unit or ADM (mounted
on the equipment)
The engine can be adapted to meet various
application-specific requirements by
means of the drive control unit or adapta-
tion module (ADM).
FR (drive control) unit
The FR (drive control) unit or the ADM
stores a range of application-specific data,
such as idling speed, maximum working
speed or speed limitation.
The FR (drive control) unit or the ADM re-
ceive data from the:
operator (position of the position sen-
sor, engine start/stop)
engine brake switch*
other systems (e.g. acceleration skid
control system)
MR (engine control) unit (e.g. oil pres-
sure and coolant temperature)
This data is used to determine the instruc-
tions for engine control (MR control unit),
which are then sent to the engine control
on the CAN line.
The FR (drive control) unit or the ADM con-
trols various displays, e.g. the electronics
warning lamp, the engine brake* and the
constantly-open throttle valves*.
Before commissioning
General information
®
If the Telligent engine system detects a
fault, this is stored in the control units as a
fault code, which can then be read using
appropriate diagnostic equipment (STAR
DIAGNOSIS or minidiag2).
In addition, the electronics warning lamp
lights up.
i
The DaimlerChrysler diagnostic equip-
ment can be connected to the equip-
ment-mounted 14-pin diagnostic
socket or using the EU-compliant serv-
ice connector. This equipment can be
used to read both the malfunction
memory and the stored engine data.
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