Iveco N60 ENT M37, Техническое и ремонтное руководство, Страница: 93 / 194

A proper diagnosis is reached through the competence
acquired with years of experience and attending training
courses.
When the user complains of poor performance or operat-
ing anomalies, due consideration must be given to his/her
indications, deriving from them the useful information that
will orient our actions.
After ascertaining the existence of the anomaly, we recom-
mend starting troubleshooting operations by decoding the
self-diagnosing data of the Central Electronic Unit of the
EDC system.
The continuous operating tests on the components con-
nected to it and the test of the operation of the entire sys-
tem conducted periodically in operation, provide an impor-
tant diagnostic address, made available by decoding the
“error/anomaly” codes issued by the blinking of the fault indi-
cator light: the “blink-code”.
Using computerized IVECO MOTORS instruments, IT 2000
and PT 01, two-way communications can be established with
the central unit, enabling not only to decode the error codes
but also to route the investigation in its memory to retrieve
the additionalinformation required to determine the origin
of the fault.
Every time a problem is notified and its existence is ascer-
tained, you must query the electronic unit in one of the ways
indicated and then proceed with troubleshooting with tests
and measurements, to obtain a picture of the overall oper-
ating conditions and identify the real causes of the fault.
If the electronic unit provides no indications, proceed
through experience, adopting traditional diagnostic modes.
Technicians and maintenance personnel are recommended,
in these cases, to check ratings and technical data foreseen in
the “N60 ENT M37 Installation Directive” document.
In order partly to overcome service personnel’s lack of
experience on this new system, we have provided, in the
pages that follow, a TROUBLESHOOTING GUIDE.
The guide comprises two distinct sections:
- the first one, organized by Blink Code, involves the
anomalies identified by EDC 7 unit, mainly electrical or
electronic in nature;
- the second one, organized by symptoms, describes the
possible anomalies not recognized by the electronic unit,
frequently mechanical or hydraulic in nature.
For operation and maintenance prescriptions, see the indica-
tions provided in Section 5.
N60 ENT M37 DIAGNOSTICS
4.93
APRIL 2004
FOREWORD