Engine Iveco C10/C13/C78/Cursor 13/Cursor 78. Manual - part 96

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EDC

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POSSIBLE

CAUSE

POSSIBLE RELATED

ANOMALIES

RECOMMENDED TESTS

OR MEASURES

REMARKS

2.1

OFF

Faulty coolant temperature
sensor. Excessive starting
time

in

cold

weather

conditions.

Greater

combustion noise

due to high injection advance.

Pre-heating resistor active diagnosis.
Parameter reading. Check cabling,
connections and component.

No overheating protection, replacement value
= 0˚C.

2.2

OFF

Faulty

boosting

air

temperature sensor.

If

the

sensor

signals

a

temperature lower than the
actual one, the error is not
stored

and

the

engine

achieves better performance,
yet with black smoke.

Parameter reading. Check cabling,
connections and component.

Replacement value = 20˚C.

2.3

OFF

Faulty

fuel

temperature

sensor.

Parameter reading. Check cabling,
connections and component.

No injection rate correction; yet, the driver is
not aware of it.Replacement value = 30˚C.

2.4

ON steady

Faulty boosting pressure
sensor. Power reduction.

Significant black smoke in
momentary conditions.

Parameter reading modus: if the
replacement value is read when the
engine is idling, the fault is confirmed.

Replacement value. Cursor 8 = 1,600 mbar,
Cursor 10 = 2,800 mbar.

2.5

OFF

Faulty ambient pressure
sensor.

Contact Help Desk for replacement (if
any) of the control unit, owing to the
sensor being integrated into the same.

EDC works with a replacement value of 28 V.

3.5

OFF

Too low battery voltage or
voltage recognition fault.

Possible

pre-heating

and

starting problems.

Battery test.

5.x

ON steady

Problem

with

injection

circuit on cylinder X. The
engine speed is reduced,
and the engine operated
with 5 cylinders.

If the fault is intermittent, the
engine

sometimes

works

correctly; sometimes, it does
not.

Engine test (if the fault is found). Check
component, cabling and connections
(head cable included).

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BLINK

CODE

EDC

WAR-

NING

LIGHT

POSSIBLE

CAUSE

POSSIBLE RELATED

ANOMALIES

RECOMMENDED TESTS

OR MEASURES

REMARKS

6.1

ON steady

Faulty

flywheel

sensor.

Reduced engine speed and
power.

Engine starting may take a
longer time than usual.

Fault memory reading by means of the
diagnosis instrument.Check cabling,
connections and component.

6.2

ON steady

Distributing shaft sensor.
Reduced engine speed and
power.

Engine starting may take a
longer time than usual.

Fault memory reading by means of the
diagnosis instrument.Check cabling,
connections and component.

(6.1 - 6.2)

ON steady

Distributing shaft phonic
wheel has rotated, due to
loosened

screws.

The

engine won’t start, or stops
and cannot

be started

again.

Reduced power with engine
started

(after

taking

the

measure recommended in the
next column).

Disconnect

the

distributing

shaft

sensor connector. If the engine is
started, even by taking a longer time
than usual, the phonic wheel is
out-of-phase.

6.4

Blinking

The engine has reached (on
pulling)

the

out-of-rev

conditions for any reason
whatsoever.

Fault memory reading. Flight recorder
reading to get confirmation of the
engine out-of-rev condition.

(9.1)

Blinking

Faulty

EDC

control

unit.The engine will stop or
won’t start.

Contact Help Desk for control unit
replacement.

No diagnosis can be made.This error may even
not be stored; this depends on the control unit
conditions.

9.2

ON steady

Control

unit

fault

(EEPROM

memory).

Reduced engine speed and
power.

Faulty memory lost; only the
diagnosis of existing faults can
be made.

Contact Help Desk for replacement (if
any) of the control unit.

9.4

Blinking

Main relay faulty or locked
in closed position. The
EDC warning light remains
ON when the key is turned
to OFF; yet the engine will
stop.

EDC power supply remains
ON after the key has been
turned to OFF; danger of
battery run-down.

Check

cabling,

connections

and

component.

The fault will be stored only after the next time
the engine is started.

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2D
32C001

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BLINK

CODE

EDC

WAR-

NING

LIGHT

POSSIBLE

CAUSE

POSSIBLE RELATED

ANOMALIES

RECOMMENDED TESTS

OR MEASURES

REMARKS

9.5

ON steady

ECU power supply is cut
out too often (5 times):
faulty main relay or engine
stop by means of battery
disconnect

switch.

Reduced

engine

max.

speed and power.

Check

main

relay,

cabling

and

connections. Investigate whether the
driver switches the engine off in other
ways than by turning the key.

The problem will be solved by itself the next
time the switch-off procedure and data storing
are performed correctly.

9.6

ON steady

ECU

stop

test

failure.

Reduced engine speed and
power.

This is a test procedure
inherent to the control unit
for power stage control. It
might

store

other

errors

concerning the various power
stages of actuators.

Contact Help Desk for replacement (if
any) of the control unit.

PA
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SIGNALLED

ANOMALY

BLINK

CODE

EDC

WAR-

NING

LIGHT

POSSIBLE

CAUSE

POSSIBLE

RELATED

ANOMALIES

RECOMMENDED

TESTS OR

MEASURES

REMARKS

The battery goes flat
quickly.

-

-

Pre-heating

resistor

powered continuously.

Local overheating.

The engine will stop or
won’t start.

-

-

Fuel pre-filter clogged.

Difficult start when the
engine is either hot or
cold.

-

-

The 3.5 bar valve on fuel
return is stuck open.

Slight overheating.

-

-

Either 0.3 bar tank return
valve

or

return

piping

clogged.

After the new vehicle
has been delivered, the
engine will stop after a
short

operation

time.The tank holds a
lot of fuel; all the rest is
O.K.

-

-

Reversed tank suction /
return pipes.

The engine is fed by the
return pipe, the suction
of which in the tank is
lower. When the pipe
sucks no more, the
engine will stop.

Reduced

power

/

difficult

engine

maneuverability.

-

-

Injection

system

/

the

engine operates with one
cylinder failing:
- injector plunger seizure;
- valve rocker arm seizure.

Overheating

Engine test: cylinder efficiency test.
If the trouble is not related to
electric components (Blink code
5.x), the rocker arm holder shaft
needs be disassembled. Check the
rocker arm roller and bushing as
well as the respective cam.

Fuel

consumption

increase.

-

-

Air filter clogging with no
signal from the warning
light on the instrument
board.

Smoke.

Check the cabling, connections and
component.