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INSTALLATION DIRECTIVE
40
V08 ENT M75
-
M11
-
M12
MAY 2006
17. EDC ECU INDICATION LIGHTS
CHECK Indication light
4. Reset button of the “maintenance alarm” -
7. Blink code emission LED (EDC) - 8. Signalling LED
of maintenance interval expiration - 9. Signalling LED for fault
engine operating parameters (WARNING).
The ECU continuously monitors its own operating conditions,
as well as of the engine and of components connected to it
with complex auto-diagnosis routines.
The identification of anomalies causes:
- the anomaly data storage in the ECU.
- the blinking lighting of the fault indication light EDC on
the instrument panel.
- the lighting of the green indication light CHECK (7) on
the relay box.
The blinking lighting of the EDC fault indication light has
the purpose to inform about a detected anomaly, whose
identification is taken “reading” the blink code of the CHECK
indication light.
(Indications for decoding codes are in the following
chapter).
The code emission happens automatically and sequentially
when the anomalies are detected; the sum of the current
anomaly code is designated “list”.
Each single code is organized in 3-digit numerical blocks with
a fixed lighting duration equal to 0.6 s.
The pauses (switch-off time) have a different duration to
distinguish the given type of information:
pause between blinking of the same digit 0.36 s
pause between different digits of the same code 1.5 s
pause between different codes of the same list 3 s
pause between consecutive lists 6 s
The emission is continuative, i.e. the code list is repeated
consecutively with the same order; a 6-second pause
separates the list repetitions.
NOTE
Only the codes of the current anomalies are returned; a
temporary anomaly causes the emission of the associated
code for the whole period the anomaly is present. The
emission code stops when the operating conditions are
restored, while the data concerning the anomaly are stored
in the failure memory of the ECU.
The stored information are able to be decoded and erasable
by the IVECO SERVICE TOOL.
Figure 45
Example of emission of the anomaly codes:
"2)$'%
2//-
)'.)4)/. 34!24 20-
20-
%.').%
#(%#+
05_007_V
9 8 7
4
Figure 45
¬S
/&&
¬S ¬S ¬S ¬S ¬S ¬S ¬S ¬S ¬S ¬S
¬S ¬S
¬S
¬S ¬S ¬S ¬S¬S ¬S ¬S
¬S
/&&
EMISSION CODE 142
EMISSION CODES 142 AND 511
05_090_V