Iveco Daily. Manual — part 123
F1
A
E
N
G
IN
E
D
AILY
470
B
as
e
-
M
ay
2004
Prin
t
603.93.281
DTC
FMI
Failing
component
Type of
Failure
Visible failure
Possible Cause
Repair action
Checks to be
performed
Measuring
conditions
Values to be
detected
Remarks
50
01
ELECTRONIC
CONTROL
UNIT
-
MAIN
RELAY DEFECT
EXCEEDED
UPPER
LIMIT
Engine does not
start, ECU not
powered
or
ECU
always
powered
and
EDC off also at
key-on.
Main
relay
interrupted
or
short-circuit.
Check wiring and
connections.
Replace
relay
if
required.
50
02
ELECTRONIC
CONTROL
UNIT
-
MAIN
RELAY DEFECT
BELOW
LOWER
LIMIT
Engine does not
start, ECU not
powered
or
ECU
always
powered
and
EDC off also at
key-on.
Main
relay
interrupted
or
short-circuit.
Check wiring and
connections.
Replace
relay
if
required.
51
01
VEHICLE
-
MULTIPOSITIO
N SELECTOR /
PTO
EXCEEDED
UPPER
LIMIT
Incorrect PTO
operation.
Voltage
exceeding max.
threshold,
short-circuit to
positive.
Check wiring and
connections.
Replace sensor if
required.
51
02
VEHICLE
-
MULTIPOSITIO
N SELECTOR /
PTO
BELOW
LOWER
LIMIT
Incorrect PTO
operation.
Voltage
under
min. threshold,
short-circuit to
ground.
Check wiring and
connections.
Replace sensor if
required.
51
08
VEHICLE
-
MULTIPOSITIO
N SELECTOR /
PTO
SIGNAL
NOT
PLAUSIBLE
Incorrect PTO
operation.
Faulty device.
Check wiring and
connections.
Replace sensor if
required.
52
04
FUEL PRESSURE
-
PRESSURE
MPROP
REGULATOR
ERROR
NO
SIGNAL
Engine off.
Faulty MPROP.
Check wiring and
connections.
Measure
type:
Resistance
(Ohm)
Measure point 1:
ECU
Pin:
A49
Measure point 2:
ECU Pin: A19
Connector Not
connected; Key
+15 OFF;
Min. value: 3.2
Ohm;
Max.
value: 3.6 Ohm;
Typical
Value:
3.4 Ohm;
High noise.
F1
A
E
N
G
IN
E
471
D
AILY
B
as
e
-
M
ay
2004
Prin
t
603.93.281
DTC
FMI
Failing
component
Type of
Failure
Visible failure
Possible Cause
Repair action
Checks to be
performed
Measuring
conditions
Values to be
detected
Remarks
52
08
FUEL PRESSURE
-
PRESSURE
MPROP
REGULATOR
ERROR
SIGNAL
NOT
PLAUSIBLE
Check wiring and
connections.
Replace
ECU
if
required.
Measure
type:
Resistance
(Ohm)
Measure point 1:
ECU
Pin:
A49
Measure point 2:
ECU Pin: A19
Connector Not
connected; Key
+15 OFF;
Min. value: 3.2
Ohm;
Max.
value: 3.6 Ohm;
Typical
Value:
3.4 Ohm;
53
01
FUEL PRESSURE
-
PRESSURE
MPROP
REGULATOR
ERROR (SHORT
CIRCUIT
TO
POSITIVE)
EXCEEDED
UPPER
LIMIT
Short-circuit to
battery,
faulty
MPROP.
Check wiring and
connections.
Replace MPROP if
required.
54
01
FUEL PRESSURE
-
PRESSURE
MPROP
REGULATOR
ERROR (SHORT
CIRCUIT
TO
NEGATIVE)
EXCEEDED
UPPER
LIMIT
Short-circuit to
ground.
Faulty
MPROP.
Check wiring and
connections.
Replace MPROP if
required.
56
08
ELECTRONIC
CONTROL
UNIT
-
INTERNAL ECU
FAULT
SIGNAL
NOT
PLAUSIBLE
Wrong
ECU
programming.
Probable
electromagnetic
interference.
Faulty ECU.
Switch key on/off
and wait for a few
seconds,
clear
failure memory. If
the error persists,
call the Help Desk
for instructions on
how to replace the
ECU.
5A
01
ELECTRONIC
CONTROL
UNIT
-
INTERNAL ECU
FAULT
EXCEEDED
UPPER
LIMIT
Wrong
ECU
programming.
Probable
electromagnetic
interference.
Faulty ECU.
Switch key on/off
and wait for a few
seconds,
clear
failure memory. If
the error persists,
call the Help Desk
for instructions on
how to replace the
ECU.
F1
A
E
N
G
IN
E
D
AILY
472
B
as
e
-
M
ay
2004
Prin
t
603.93.281
DTC
FMI
Failing
component
Type of
Failure
Visible failure
Possible Cause
Repair action
Checks to be
performed
Measuring
conditions
Values to be
detected
Remarks
5A
02
ELECTRONIC
CONTROL
UNIT
-
INTERNAL ECU
FAULT
BELOW
LOWER
LIMIT
Wrong
ECU
programming.
Probable
electromagnetic
interference.
Faulty ECU.
Switch key on/off
and wait for a few
seconds,
clear
failure memory. If
the error persists,
call the Help Desk
for instructions on
how to replace the
ECU.
5B
01
ELECTRONIC
CONTROL
UNIT
-
INTERNAL ECU
FAULT
EXCEEDED
UPPER
LIMIT
Wrong
ECU
programming.
Probable
electromagnetic
interference.
Faulty ECU.
Switch key on/off
and wait for a few
seconds,
clear
failure memory. If
the error persists,
call the Help Desk
for instructions on
how to replace the
ECU.
5E
01
ENGINE 1 - FUEL
PUMP RELAY
EXCEEDED
UPPER
LIMIT
Fuel pump on
always
when
engine is off.
Faulty
relay,
short-circuit to
positive
in
wiring.
Turn key-on: pump
must
run
for
approximately
10
seconds (it should
hum). Check pump
relay
if
pump
remains on. Check
wiring if all checks
are OK.
F1
A
E
N
G
IN
E
473
D
AILY
B
as
e
-
M
ay
2004
Prin
t
603.93.281
DTC
FMI
Failing
component
Type of
Failure
Visible failure
Possible Cause
Repair action
Checks to be
performed
Measuring
conditions
Values to be
detected
Remarks
5E
02
ENGINE 1 - FUEL
PUMP RELAY
BELOW
LOWER
LIMIT
Fuel pump not
working.
Faulty
relay,
short-circuit to
ground in wiring.
Turn key-on: pump
must
run
for
approximately
10
seconds (it should
hum). Check the
pump
relay,
protection fuse and
wiring if this does
not occur.
5E
04
ENGINE 1 - FUEL
PUMP RELAY
NO
SIGNAL
Fuel pump not
working.
Faulty
relay,
wiring
interrupted.
Check wiring and
connections.
Replace
relay
if
required.
5E
08
ENGINE 1 - FUEL
PUMP RELAY
SIGNAL
NOT
PLAUSIBLE
Fuel pump not
working.
Faulty
relay,
wiring
interrupted.
Check wiring and
connections.
Replace
relay
if
required.
5F
01
FUEL PRESSURE
- RAIL PRESSURE
SENSOR
OR
SIGNAL ERROR
EXCEEDED
UPPER
LIMIT
Short-circuit to
positive. Faulty
sensor.
Rail
pressure
not
regular.
Check wiring and
connections.
Replace sensor if
required.
Check DTC 103
error.
5F
02
FUEL PRESSURE
- RAIL PRESSURE
SENSOR
OR
SIGNAL ERROR
BELOW
LOWER
LIMIT
Short-circuit to
ground,
faulty
sensor.
Check wiring and
connections.
Replace sensor if
required.
60
01
FUEL PRESSURE
- RAIL PRESSURE
SENSOR
OFFSET
EXCEEDED
UPPER
LIMIT
Faulty
rail
pressure sensor.
Replace sensor.
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