Iveco daily euro 4, Repair Manual

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At assistance, code written in clear has to be used (3, Figure 31)
for central unit replacement and reprogramming procedures.
In the table there is shown the conversion of OCR characters into
Arial characters.
When electrical injectors mounted on the vehicle must be
replaced, meet following warnings:
-
where electrical injectors are dismounted and do not
need to be replaced, their mounting position has to be
noted down in order to remount them later in the same
position; this is done to avoid to reprogram the central
unit;
-
after replacing one or more injectors, the central unit has
to be reprogrammed;
- before mounting a new electrical injector, note down IMA
code printed on the injector, because the code is difficult
to read after the injector has been mounted;
- where the central unit is replaced, reprogram the new
central unit with the IMA codes of the electrical injectors
mounted on the engine and copy down the rectification
coefficients (ZFC) of replaced central unit; where it is not
possible, they must be reset and self-learning process
must be started up again.
During engine running, EDC 16 central unit performs some
checks on electrical injectors minimum flow rate.
In certain conditions (overrun: vehicle deceleration with pedal
released) an increasing (very small) fuel quantity starting from
zero is injected and its effect on engine rotation smoothness
is observed.
Injection start threshold is detected and stored by the central
unit.
This self-learning process is carried out on each single cylinder.
Therefore, replacing an electrical injector involves the need of
reprogramming the central unit by entering the IMA codes of
new electrical injectors and resetting the rectification factors
(ZFC) of the cylinder considered.
Replacing all electrical injectors extends the need of resetting
to all the rectification coefficients (ZFC) of each single
electrical injector.
Figure 303
Conversion table of OCR
characters into ARIAL characters
The control unit is a ”flash EPROM” and so it can be
reprogrammed from outside without changing the hardware.
It processes the signals from the sensors by applying software
algorithms and controls the actuators (especially the
electro-injectors and pressure regulator).
The control unit records, in the memory non-labile area, the
information on the engine parameters originally set or
acquired during engine operation.
The injection control unit has the absolute pressure sensor
built in to further improve the control of the injection system.
The control unit is mounted on the left-hand side of the engine
bay and is connected to the vehicle’s wiring harness by two
connectors:
—
60-pin connector A for the components on the engine
— 94-pin connector K for the components on the vehicle
In addition to handling the operation of the system described
under the relevant heading, the electronic control unit is
interfaced with the other electronic systems on the vehicles
such as ABS — EBD cruise control, speed limiting device,
immobilizer (IVECO CODE), EGR and glow plugs.
On the vehicles equipped with D.P.F. catalyst, the control unit
also controls the catalyst regeneration system. In this case,
after any of the operations below is carried out:
- replacing one or several injectors;
- replace all injectors;
- replace flow rate meter (flow meter);
- rreplacing the hydraulic accumulator (common rail)
pressure sensor;
- replace E.D.C. 16 central unit;
- refill engine oil;
- replace D.P.F. catalyst;
- replace filter differential pressure (
∆
p) sensor;
- replace components relevant to emissions;
- necessarily perform a forced regeneration;
the following operations shall be carried out by using the
IVECO diagnosis instrument:: MODUS - E.A.SY. - IT 2000;
then the procedure to replace affected component has to be
carried out, following below indications provided by diagnosis
tools:
ELECTRIC/ELECTRONIC COMPONENTS
766161
Electronic control unit EDC 16
Figure 304
k
85711
The correction coefficients (ZCF) can be set to zero by means
of the IVECO: MODUS - E.A.SY. - IT 2000 diagnosis
instruments, by programming the control unit again and
performing the sensor replacement procedure indicated by
the diagnosis instrument itself.
F1A ENGINE
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D
AILY
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Print 603.93.651 Base - March 2006
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