Iveco Daily. Manual — part 112
F1
A
E
NG
INE
D
AI
LY
426
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
LAMP
POSSIBLE
CAUSE
POSSIBLE
TROUBLE
TESTS OR
RECOMMENDED ACTION
NOTES
1.5
Off
Clutch switch: signal not
plausible
(at
the
EDC
control unit it seems the
speed of the vehicle has
changed from 0 to at least
30 km/h without the clutch
getting pressed) or not
present.
Cruise Control / PTO fail to
work.
Read status parameters with the
diagnosis instrument to check correct
switchover on pressing the pedal.
If the result is negative, use a
multimeter on the component to
check continuity and switchover on
pressing the pedal between pins 1 and
2.
If the switch is sound, check the
continuity of the wiring between
switch pin 2 and EDC connector B38.
With the key ON, check there is
voltage (approx. 12V) between EDC
pin B31 and earth. Also check the fuse
24 and the wiring between the switch
pin 1 and pin 13 of fuse 24.
If everything turns out satisfactory with the check,
the trouble could be with not pressing the clutch
fully down (it is sometimes possible to change
gear without operating the switch).
1.6
On
Brake switch — signals not
plausible between primary
and secondary.
Brake lights might not work.
The Cruise Control / PTO
fails to work.
Read status parameters with the
diagnosis instrument to check correct
and simultaneous switchover of the
primary and secondary brake switches.
If the outcome is negative, use a
multimeter to check the integrity and
correct switchover of the switches
(one between pins 3 and 2 and the
other between pins 1 and 2).
If the switches are sound, with the key
ON and the pedal pressed (brake lights
on), check for approx. 12V on EDC pin
B26 (secondary switch) and on EDC
pin B31 (primary switch). If there is no
voltage, check the wiring and the relays
between the switches
and EDC
connector.
Check the pedal switches are fitted correctly
(they must activate at the same time).
If the trouble occurs too frequently, change both
switches.
F1
A
E
NG
INE
427
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
LAMP
POSSIBLE
CAUSE
POSSIBLE
TROUBLE
TESTS OR
RECOMMENDED ACTION
NOTES
1.7
Off
Throttle
/
brake
pedal
plausibility:
simultaneous
brake
and
throttle
activation.
Engine speed drops down to
idling.
If the brake is applied with
the throttle pressed, the
engine drops down to idling
until the brake is released so
it is possible to stop the
vehicle even if the throttle
pedal jams in an intermediate
position.
Whereas,
it
is
possible to accelerate with
the brake pedal pressed
without
any
safety
mechanisms tripping.
Read parameters with the diagnosis
instrument, check that the throttle
pedal potentiometer signal resets on
release, otherwise the driver might
have pressed the brake and the throttle
together.
This error is stored in memory only if the brake
and throttle signals are integral.
If the error is saved to memory when the pedals
are not pressed, it is likely that one of the brake
switches is stuck or shorted to +Batt.
Make the user aware about using the pedals
correctly.
1.8
Off
EDC
lamp
shorted
or
circuit open.
The EDC lamp fails to come
on when turning the key ON
or it stays on even with the
key OFF.
Check
continuity
between
the
instrument panel pin B17 and EDC
connector pin B23.
Check that with the key ON there is
approx. 12V between the instrument
panel pin B16 and earth.
Check the LED works between B16
and B17 on the instrument panel.
Check
continuity
between
the
instrument panel pin B17 and EDC
connector pin B23.
The operation of the indicator light is extremely
important for the operation and integrity of the
system.
Make the user aware to check the indicator light
works properly with each ignition (if there are no
faults in memory, it has to come on for 2 sec. and
then go out).
F1
A
E
NG
INE
D
AI
LY
428
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
LAMP
POSSIBLE
CAUSE
POSSIBLE
TROUBLE
TESTS OR
RECOMMENDED ACTION
NOTES
1.9
Off
AC compressor control
relay coil shorted to +Batt
or to earth or circuit open.
The air-conditioning
compressor is not
disconnected when the
EDC requires it.
Active diagnosis with the diagnostic
instrument.
If the outcome is negative, check that,
with the key ON and engine off,
between the EDC pin A35 and earth
there is no voltage (if there is also 9.7,
call the Help Desk to have the control
unit replaced, if necessary).
If the compressor does cut out,
disconnect the relay 25337. If on
disconnecting
the
relay
the
compressor stops, replace the relay.
If the compressor never works, try
replacing the relay and check continuity
between the EDC connector pin A8
and earth.
If the circuit is open at pin A8 level 2.7-2.8-2.9 are
saved to memory as well.
The control unit only sees the integrity of the coil
between pins 8 — 35 and not any stuck contacts.
During active diagnosis, besides the relay tripping
the
compressor
clutch
must
disconnect-
reconnect.
2.1
Blinking
Water temperature sensor
short-circuited or circuit
open.
Less power (and noise as
pre-injection
is
not
implemented) in all cases.
Engine cooling fan always on
(if there is no temperature
signal or it is not valid, in
order to protect the engine
the control unit turns on the
fan).
Read measurable parameters with the
diagnosis
instrument
to
check
plausibility
between
EDC
water
temperature and that signalled by the
vehicle’s instrument.
Read parameters: if there is this error,
the water temperature read on the
control unit will be the same as that of
the fuel.
In the event of contrasting indications,
use a multimeter to check the integrity
of the sensor between its pins 1 and 2
(R = approx. 2.5 kOhm at 20
°C).
If the sensor is integral, check the wiring
between
the
sensor
and
EDC
connector pin A1-A30.
In the event of trouble with the wiring pin A30,
simultaneous signalling of trouble with the fuel
temperature sensor and indication (reading
measurable parameters) of a fixed temperature of
60
°C.
In the event of a high temperature, check the
engine cooling fan comes on and if necessary the
contacts of relay 25336 and fuse no. 5.
F1
A
E
NG
INE
429
D
AI
LY
B
as
e
-
M
ay
2004
P
rin
t
603.
93.
281
BLINK
CODE
EDC
LAMP
POSSIBLE
CAUSE
POSSIBLE
TROUBLE
TESTS OR
RECOMMENDED ACTION
NOTES
2.2
Off
Air temperature sensor on
intake
manifold
short-
circuited or circuit open.
The control unit calculates
the fuel metering basing itself
on a set temperature value. It
is therefore possible to have
slight decreases or increases
in performance and smoke
depending on the difference
between
the substitution
temperature and the actual
one.
Read measurable parameters with the
diagnosis instrument: if there is this
error,
the
turbocharging
air
temperature will be fixed at 20
°C.
If the temperature is fixed at 20
°C,
check the integrity of the sensor (R =
approx. 2.5 kOhm at 20
°C) pin 1 and
2.
If the sensor is sound, check the wiring
between
the
sensor
and
EDC
connector pin A2-A19.
The temperature sensor is integrated with the
pressure sensor.
2.3
On
Fuel temperature sensor
short-circuited or circuit
open.
The control unit calculates
the fuel metering basing itself
on the water temperature,
but in this case there is no
reaction
the
driver
can
detect.
Read measurable parameters: if there is
this error, the fuel temperature will be
the same as that of the water.
If the temperature indicated has the
same value as that of the water, check
the integrity of the sensor (R = approx.
2.5 kOhm at 20
°C).
If the sensor is sound, check the wiring
between
the
sensor
and
EDC
connector pin A15-A30.
In the event of trouble with the wiring pin A30,
simultaneous signalling of trouble with the water
temperature sensor and indication (reading
parameters) of a fixed temperature of 50
°C.
If the signal exceeds 85
°C, reduction to 60%
power, if it exceeds 90
°C, reduction in injection
pressure, if it exceeds 110
°C, the error is stored
in memory (even if the signal is sound).
If the flight recorder reading detects too much
time at high temperatures, make the user aware
of not driving with the fuel tank level always low.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст