Iveco Daily Euro 4. Manual — part 259
120
ELECTRIC/ELECTRONIC SYSTEM
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Function
Cable
1
Earth
0000
2
Positive after fuse
7772
3
Positive after fuse
7772
4
Signal earth
0000
5
-
-
6
Left rear sensor earth
5571
7
Right rear sensor earth
5572
8
Right rear sensor
5572
9
-
-
10
Front sensor
5570
11
Diagnosis line K
2299
12
-
-
13
De-activating the decelerator with ABS in
0000
14
CAN line L
Green
15
-
-
16
-
-
17
-
-
18
-
-
19
-
-
20
-
-
21
-
-
22
-
-
23
-
-
24
-
-
25
-
-
26
-
-
27
Left rear sensor
5571
28
Positive after fuse for ABS (KL 15)
8847
29
Front sensor earth
5570
30
Stop signalling switch - Stop lights
1173
31
Switch to enable engine brake to be put on (ASR/ESP passive switch)
8800
32/33/34
-
-
35
-
White
36
-
-
37
-
-
38/39/40
-
-
41
-
-
42
-
-
43
-
-
44/45
-
-
46
-
-
PIN OUT of central unit ASR 8
(4 channels -X)
102246
Figure 115
(4 channels -II)
102246
Figure 116
ELECTRIC/ELECTRONIC SYSTEM
121
D
AILY
E
URO
4
Function
Cable
1
Earth
0000
2
Positive after fuse
7772
3
Positive after fuse
7772
4
Signal earth
0000
5
Left front sensor
5570
6
Left front sensor earth
5572
7
Left rear sensor
5572
8
Left rear sensor earth
5573
9
Right front sensor earth
5571
10
Right front sensor
5571
11
Diagnosis line K
2299
12
-
-
13
De-activating the decelerator with ABS in
0000
14
CAN line L
Green
15
-
-
16
-
-
17
-
-
18
-
-
19
-
-
20
-
-
21
-
-
22
-
-
23
-
-
24
-
-
25
-
-
26
Left front sensor earth
5570
27
-
5572
28
Positive after fuse (KL 15)
8879
29
Right rear sensor
5573
30
Stop signalling switch - Stop lights
1173
31
Switch for the exclusion of ASR
8921
32/33/34
-
-
35
CAN Line H
White
36
-
-
37
-
-
38/39/40
-
-
41
-
-
42
-
-
43
-
-
44/45
-
-
46
-
-
ESP (Electronic Stability Program) operation
The ESP function controls the vehicle’s stability and side dynamics.
The main goals of this function are as follows:
- to improve stability, especially in understeering and oversteering conditions;
- to reduce the braking distance in line change conditions and on slippery roads.
The ESP function evaluates the following driver’s requests:
-
steering-wheel position;
-
wheel revs number (speed);
-
pressure on the brake pedal or accelerator position.
The ESP control unit microprocessor recognizes the specific manoeuvre and examines the vehicle’s behaviour:
-
degree of yaw;
-
wheel revs number;
-
transverse acceleration.
The microprocessor assesses the running behaviour based on the data provided, and the ESP comes into operation by acting
on the brakes.
The hydraulic modulator controls brake pressure for every single wheel as quick as possible.
The ESP may, through engine management, reduce the number of revolutions of the engine itself, in order to withstand vehicle
deceleration.
The ESP system is always active in the background, i.e. it compares the actual vehicle ride with the driver’s desired ride 50 times
a second.
Control strategy
Sudden obstacle
102246
1) Acting on the steering-wheel suddenly: danger of understeering.
2) The ESP brakes the rear left wheel
⇒ the vehicle follows the steering command.
3) The driver countersteers: Danger of oversteering
⇒ The ESP brakes the front left wheel.
4) The vehicle recovers stability.
Figure 117
122
ELECTRIC/ELECTRONIC SYSTEM
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101864
1) The vehicle risks skidding (oversteering): the ESP brakes the front right wheel.
2) The vehicle recovers stability.
3) The vehicle risks skidding (oversteering): the ESP brakes the front left wheel.
4) The vehicle recovers stability.
Sudden steering
Vehicle running on a slippery road
101865
1) The vehicle risks skidding (understeering): the ESP brakes the rear right wheel and reduces the engine revs number.
2) The vehicle recovers stability.
Figure 118
Figure 119
ELECTRIC/ELECTRONIC SYSTEM
123
D
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