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.