Iveco Stralis AT/AD. Manual — part 351
001699
000422t
001727t
III.188
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
Release pedal NA integrated into the position sensor is used to detect engine idling position and enable clutch engagement at
vehicle start.
The signal reaches the EDC electronic center via the CAN VDB Vehicle Data Base line and is sent to the Automated EuroTronic
transmission center.
Kick Down is activated with the accelerator pedal in automatic function mode travel. The Kick Down function is activated when
accelerator pedal lever (1) move the potentiometer to position 100%, which does not correspond to pedal mechanical travel
end.
Stiffened travel end is only mechanical and is used to transmit the feeling Kick Down inserted to the operator.
00206t
A
B
C
D
E
Connector A
- White (free)
Connector B
- Brown (ECAS)
Connector C
- Yellow (EBS/ABS/SDR)
Connector D
- Blue (EuroTronic/PTO/INTARDER)
Connector E
- Green (EDC/ADR)
1
28
39
11
38
40
27
19
12
20
ELECTRONIC SYSTEMS
III.189
S
TRALIS
AT/AD
WALL PASS
This new wall pas has been introduced to maximize contact reliability.
III.190
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
Pin
Function
Cable colour
code
1
Supply system gearbox Eurotronic terminal 15 after fuse
8101
2
Earth Eurotronic
0000
3
Electric selector with automatic gearbox
6100
4
Line CAN - L electric selector with automatic gearbox
GN/VE
5
Line CAN - H electric selector with automatic gearbox
WS/BI
6
Supply for Eurotronic 2 from terminal 30
7101
7
Line - K fault-diagnosis Eurotronic 2
2297
8
Line CAN - L electronic control unit for automatic gearbox (VBD)
GN/VE
9
Line CAN - H electronic control unit for automatic gearbox (VBD)
WS/BI
10
Line CAN - L electronic control unit for automatic gearbox (VBD)
GN/VE
11
Line CAN - H electronic control unit for automatic gearbox (VBD)
WS/BI
12
P.T.O.1 Eurotronic
9131
13
P.T.O.2 Eurotronic
9132
14
Water temperature transmitter for Retarder
0309
15
Water temperature transmitter for Retarder
5309
16
Solenoid valve for Retarder oil accumulator
9311
17
Solenoid valve for Retarder oil accumulator
0311
18
Solenoid valve to turn on Retarder
9130
19
Solenoid valve to turn on Retarder
0310
ELECTRONIC SYSTEMS
III.191
S
TRALIS
AT/AD
INTARDER
Operation
The intarder is operated with the 7-position sector located in the right direction indicator (1). INTARDER cut-in indica-
tion is managed by the CLUSTER (2) via a specific warning.
The system is provided with a Brensomat constant velocity function used for vehicles without EBS. This function
enables keeping a vehicle on a downhill slop moving at the speed as selected by the operator. In this case, the intarder
electronic centre automatically selects the braking torque required.
The constant velocity function is only activated in position “0” after storing the speed desired.
Storage can be at any of the 7 selector positions by briefly pressing the push button provided; with higher pressure
storing speed at that moment and lower pressure decrease of speed set. The speed programmed previously is restored
as soon as the selector is returned to position “0”.
Pressing the push button once again disenables the constant velocity function. The oil contained in the sump is sent
to the intarder hydraulic circuit via a filter and the circuit is protected by a safety valve.
By acting on selector (1), electronic centre (4) receives via SWI (3) an electrical signal that it processes and sends to
electro valve (7) controlling the accumulator and proportional electro valve (5).
The accumulator control electro valve switches and lets air under pressure pass through its piston to send oil to the
hydraulic circuit and reduce action time.
The proportional electro valve acts on the control valve to set its pressure. The adjustment valve is piloted by control
valve oil pressure. The rotor is connected to the rear axle via the transmission shaft and the stator is connected to
the frame through the intarder case.
The oil contained in the areas between the rotor and the stator is moved by the rotor blades to create a closed circuit
oil flow between mobile and fixed parts.
By impacting the stator blades, oil causes rotor and therefore vehicle braking. Reduced oil flow speed between the
rotor and the stator transforms kinetic energy into heat, to dissipate which oil passes through an oil/water heat
exchanger, where oil heat is transmitted to cooling water and dissipated through the vehicle cooling system.
The heat exchanger water discharge pipe is provided with a temperature sensor (6) that continually sends cooling
water temperature data to the electronic centre to ensure maximum temperature allowed for proper engine oper-
ation is not exceeded.
If water temperature rises to reach the safety limit for any reason whatsoever, the centre pilots sump control air adjust-
ment to reduce braking torque.
The electronic centre receives a signal from the ABS/EBS system that causes intarder cutout when actuated and it also
receives a signal from electronic tachograph (8) enabling constant velocity function use. This signal is sent via a VDB
can line.
Switching to position “0” cuts the intarder off and deactivates the proportional and accumulator control electro valves.
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