Iveco Daily Euro 4. Manual — part 270
Accelerator pedal
To detect the engine idling position and allow the clutch to
be engaged when the vehicle is about to start, the N.O.
switch, incorporated into the position sensor, is used, with
the pedal released.
This signal reaches the EDC electronic control unit and is
sent, through the CAN VDB (Vehicle Data Base) line, to the
gearbox control unit.
The “kick-down” function can be actuated during running, in
the automatic mode.
When the pedal is pressed down almost fully (98%), e.g.
when overtaking, the system will automatically shift down by
one speed, thus making it possible to use the deflecting
torque at its best.
In practice, if the accelerator pedal is pressed fully down, the
vehicle will ride at a running speed with a higher gear shift.
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Figure 153
Figure 154
Figure 155
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PIN
FUNCTION
1
KL 15
2
GROUND
3
CAN L
4
CAN L
5
-
6
-
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Gear selector is an electronic component placed in the cab at driver side.
It is interfaced with gearbox central unit through CAN communication line in order to signal that the driver is going to select
and engage a gear.
Figure 156
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System power supply is ensured by an assembly of fuses located in engine opening in interconnection central unit at highlighted
positions.
F3 — is connected to central unit pin B4
F4 - is connected to central unit pins B5 and B6
F18 - Central unit power supply
F24 — Automated gearbox services
Where one or two of these fuses is burnt, gearbox functionality is not impaired. Failure of fuse F24 only prevents gearbox from
operating (clutch movement, gear selection and engagement are inhibited).
Accelerator pedal sensor
Accelerator pedal position is provided to gearbox central unit through proper communication line by electronic central unit
EDC, which learns the position thanks to load transmitter directly mounted on accelerator pedal.
Engine rpm sensor
The sensor is mounted at engine flywheel.
Engine rotation speed values are transmitted to electronic central unit EDC, which through proper communication line transfers
them to gearbox central unit.
Vehicle speed sensor
The sensor transmits pulses to electronic tachograph / tachometer.
The signal is duplicated by sensors ABS/ESP present on the wheels.
Figure 157
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1. EDC control unit - 2. Gearbox control unit - 3. Clutch actuator electric motor - 4. PTO actuator motor -
5. PTO ON switch - 6. PTO ON warning light - 7. PTO control unit - 8. PTO actuation switch - A. Gearbox side -
B. Vehicle side.
PTO
There is one pushbutton only, which is used for inserting and disconnecting PTO.
PTO can only be engaged with gearbox in neutral position and engine on.
PTO can be used both in STATIONARY and NON STATIONARY conditions.
In NON STATIONARY conditions valid are following conditions:
- First gear can be put in and vehicle moved.
- Once started, with vehicle moving, gear cannot be shifted any more;
- PTO can be disengaged with gearbox in both gear and neutral position.
- Depending on signal coming in to Pins, self-implementing device acknowledges if it is working with either a mechanical or
automated gearbox. If it is working with a mechanical gearbox, signal comes in from clutch pedal.
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