Foreword
_____________________________________________________________________
Status September 2003 (EvoBus-Service / AFT)
Page: 2 of 83
This training document is intended for the technical personnel charged with the maintenance and
servicing of Mercedes-Benz omnibuses with a natural-gas power plant (M 447 hLAG).
In the contents we provide information on the working and operating modes of the engine control unit
(MR) EGM (electronic gas engine) of the M 447 hLAG.
Details are based on the software version 14B_001
(
ZCRB0A01
).
The specified part number serve only mark marking and distinguishing individual components. When
ordering spare parts, the part numbers should always be taken from the spare parts documentation.
This training document resulted as part of the temporary special measure "Support Start-Up Safeguarding
for M 447 hLAG" and was supplemented with the new diagnostic functions of the software 14B_001. It is
not subject to the updating service. All information correspond to the status at the time of printing.
Other applicable documents (Service – EvoBus)
Title
Operating Manual (Omnibus Model O 530 – Citaro ÜSTRA)
On-Board-Diagnose (Omnibus Model O 530 – Citaro ÜSTRA)
Maintenance Sheets, Maintenance Manual (Omnibus Model O 530 – Citaro ÜSTRA)
DC Intranet (description of the natural gas Citaro and the CNG components)
September, 2003
