Iveco Daily. Manual — part 40
E
N
G
IN
E
S
8140.
43R
/B
/S
/N
142
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
WARNING
LIGHT
POSSIBLE
CAUSE
POSSIBLE
FAILURES
RECOMMENDED TESTS
OR OPERATIONS
REMARKS
4.4
Blinking
Booster pressure too high,
too low or too different
from the provided value
(for mechanical locking)
4.5
Possible
consumption
in-
crease due to exhaust back
pressure
Early turbine wear
Power reduction
Smoke when accelerating
(due to air excess or lack)
VGT test
Read parameters on Modus IWT-
IT2000.
Check VGT mechanism movement
Check VGT actuator
Check wiring
Check VGT pneumatic control circuit
Mechanism
locked
partially/completely
closed or open
Or VGT solenoid valve short to positive or to
ground
4.5
VGT only
On
VGT actuator short to
positive or to ground or cir-
cuit open
4.4 and power reduction
(and noise since pre-injec-
tion is not performed)
Smoke when accelerating
(due to air excess or lack)
VGT test
Check wiring, connections and compo-
nent.
If wiring to pin 8a short to positive or open,
the following are also faulty:
-
fan control
-
VGT control
-
3
rd
pumping element cut-out
-
pressure regulator
-
EGR
-
conditioner compressor
-
fuel motor pump
5.1
5.2
5.3
5.4
Blinking
Corresponding cylinder in-
jector shorted to positive
3.1- 3.2 -3.3 -3.4
The engine runs on 2 cylin-
ders
Engine test
Wiring - connections — electrical part
of relevant injector
The engine turns only with pairs of cylinders
(2 and 3 or 1 and 4)
After turning off and back on again the en-
gine turns with 3
5.1
or
5.2
or
5.3
or
5.4
Blinking
Injector electrical part short
to ground or circuit open
3.1 - 3.2 - 3.3 - 3.4
Engine running with 3 cylin-
ders
Engine test.
Check wiring, connections and compo-
nent.
E
N
G
IN
E
S
8140.
43R
/B
/S
/N
143
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
WARNING
LIGHT
POSSIBLE
CAUSE
POSSIBLE
FAILURES
RECOMMENDED TESTS
OR OPERATIONS
REMARKS
5.7
or
5.8
Blinking
Power stage of cylinders 1
and 4 or 2 and 3 (in con-
trol unit) defective
3.1 - 3.2 - 3.3 - 3.4
The engine runs on 2 cylin-
ders
Delete fault memory and try again
If the error remains, call the Help
Desk and follow their instructions to
replace the control unit, if necessary.
It might happen if the outer casing of the
control unit has been shorted with battery
+ (accidentally with a spanner, etc.)
6.1
Blinking
Flywheel sensor: signal mis-
sing or not plausible
Difficult starting with warm
engine, starting impossible
with cold engine
Power reduction (and noise
since pre-injection is not per-
formed)
Read parameters on Modus IWT-
IT2000.
Check wiring, connections and sensor
assembling
Should flywheel signal be missing, camshaft
sensor signal is adopted
6.2
Blinking
Camshaft
sensor:
signal
missing or not plausible
Difficult starting with warm
engine, starting impossible
with cold engine
Power reduction
Check wiring, connections and sensor
assembling
Should camshaft signal be not good, flywheel
sensor timing signal is adopted
6.4
Off
The engine has over-
revved, probably driven,
or:
crankshaft sensor signal (in
this case, signalling error
6.1)
If the over-revving occurred
when driven, no reaction
perceptible by the driver
(other than the indicator
light blinking)
Data saved, verify the duration and
frequency of the over-revving
Delete the fault memory
Sensitize the driver about the correct use of
the vehicle
E
N
G
IN
E
S
8140.
43R
/B
/S
/N
144
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
WARNING
LIGHT
POSSIBLE
CAUSE
POSSIBLE
FAILURES
RECOMMENDED TESTS
OR OPERATIONS
REMARKS
8.1
Blinking
Excessive current to regu-
lator - injectors with blow-
by at end of lifetime, leaks
from pressure relief valve,
regulator locked open, 3rd
pumping element cut-out
always powered, high pres-
sure pump breakage, rail
breakage or pipe breakage
between injection pump
and rail
Engine off if actual pressure is
lower than a certain value
with respect to target pres-
sure.
Power reduction
Noise increase since pre-in-
jection is not performed
Visually inspect absence of fuel leaks
from high pressure pipes and rail.
Check pressure relief valve tightness.
Check wiring and regulator coil resis-
tance. If also 8.4 is displayed or injector
and pressure relief valve malfunctioning
can be excluded. Check 3rd pumping
element cut-out wiring and connec-
tions and replace high pressure pump
if required.
If ECU detects a pressure value significantly
lower than the calculated value, engine is
switched off
NOTE: injectors must not show blow-by with
< 200.000 km covered
WARNING! If failure memory is deleted, en-
gine will not start but failure is no longer indi-
cated
For this reason, before deleting the fault
memory it is advisable to print out its content.
8.1
Blinking
Pressure regulator locked
closed
8.3 - 8.4
Power reduction
Noise increase since pre-in-
jection is not performed
If 8.3 blink code is not displayed, replace
rail pressure sensor; otherwise check
regulator resistance. Replace pump and
regulator if required.
If also 8.3 + 8.4 are displayed, contact
Help Desk and comply with its instruc-
tions to replace the ECU, if required
8.2
Blinking
Rail pressure sensor short
to positive or to ground or
circuit open
Power reduction
Noise increase since pre-in-
jection is not performed
Read parameters on Modus IWT-
IT2000.
Check wiring, and replace sensor
8.3
Blinking
Pressure regulator short to
ground or to positive or cir-
cuit open
8.1 and 8.4 could be present
Engine switching off or not
starting
Check wiring, connections and regula-
tor. Replace high pressure pump if 8.1
- 8.3 are displayed.
Replace ECU if 8.3 - 8.4 are displayed,
if required.
Restarting impossible
E
N
G
IN
E
S
8140.
43R
/B
/S
/N
145
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
WARNING
LIGHT
POSSIBLE
CAUSE
POSSIBLE
FAILURES
RECOMMENDED TESTS
OR OPERATIONS
REMARKS
8.4
Off
3
rd
pumping element cut-
out solenoid valve control
short to ground or circuit
open
8.1
Error in ECU memory
Active diagnostic with Engine test to
check pump operation
Check wiring, connections and compo-
nent
3
rd
pumping element not cut-out when ex-
pected, pump can therefore be poor lubri-
cated when motoring over (long downhill
with warm engine and exhaust brake on over
peak rpm).
CAUTION
NEVER RUN DOWNHILL WITH ENGINE
OFF AND GEAR ENGAGED.
8.5
On
EGR monitoring: incorrect
implementation of the
EGR percentage calcu-
lated by the control unit
EGR is turned off
Emissions not in conformity
with legislation
Smoke at high speed - re-
duced performance
Check that the EGR pneumatic valve
is not jammed shut or open (or in-
tentionally tampered with)
Check that the pipe between the so-
lenoid valve and the EGR pneumatic
valve is not crushed, punctured or de-
tached
Check wiring - connectors and sole-
noid valve
In case of any defect with the wiring of pin
8A, the errors related to all the devices
connected to this pin will be stored in
memory
8.6
On
EGR solenoid valve short-
circuited or with open cir-
cuit
EGR fails to work or works
constantly
Emissions not in conformity
with legislation
Smoke at high speed - re-
duced performance
Check the EGR solenoid valve works
properly (diagnosis active with the
diagnostic tool)
Using a multimeter, check the integ-
rity of the solenoid valve
In case of any defect with the wiring of the
EDC connector pin 8A, the errors related
to all the devices connected to this pin will
be stored in memory
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