Iveco Stralis AT/AD. Manual — part 326
The electro valve is of the N.A. type.
Coil resistance is ~ 0.56
÷ 0.57 Ohm.
Maximum operating voltage is ~ 12
÷ 15 Amp.
Based on voltage absorbed by the electro valve, the electronic center can identify whether injection was correct or
mechanical problems exist. It can also detect injector errors ONLY with the engine running or during starts.
They are connected to the electronic center with a positive common to groups of three injectors:
Cylinder 1 - 2 — 3 injector to pin A 24
Cylinder 4 - 5 - 6 injector to pin A 25.
Injectors are individually connected to the center between pins:
A24 / A35 cylinder 1 injector
A24 / A34 cylinder 2 injector
A24 / A33 cylinder 3 injector
A25 / A26 cylinder 4 injector
A25 / A28 cylinder 5 injector
A25 / A27 cylinder 6 injector
Injectors are connected to the center with connector ST - E mounted on the engine front with a twisted cable, to avoid
possible electromagnetic interference problems, so junctions or repairs on it must NOT be performed.
000690t
III.88
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
000691t
ST - E
000692t
ELECTRONIC SYSTEMS
III.89
S
TRALIS
AT/AD
Pin
Cable
Function
Center Pin
A
B
Injector 1 control
A35
B
G
Injector 2 control
A34
C
-
-
-
D
-
-
-
E
V
Injector 3 control
A33
F
R
Injector 1/2/3 supply
A24
G
L
Injector 4 control
A26
H
Z
Injector 5 control
A28
I
M
Engine brake control electro valve
A3
L
C
Engine brake electro valve supply
A32
M
H
Injector 6 control
A27
N
N
Injector 4/5/6 supply
A25
TECHNICAL VIEW
8527
000602t
WIRING DIAGRAM
PERSPECTIVE VIEW
000693t
III.90
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
This N.T.C. type sensor located on the water outlet sump on the engine head left measures coolant temperature for
the various operating logics with a hot or cold engine and identifies injection enrichment requirements for a cold engine
or fuel reduction requirements for a hot engine.
The coolant temperature signal is used for display on the Cluster and to control the fan.
It is connected to electronic center pins A5/A22
Sensor behavior as a function of temperature:
- 10
°C
8,10
÷ 10,77 kOhm
+ 20
°C
2,28
÷ 2,72 kOhm
+ 80
°C
0,29
÷ 0,364 kOhm
At 60 to 90 _C, voltage at A5 and A22 ranges from 0.6 to 2.4V.
Connector
Function
Cable colour
2
To EDC center pin A 5
–
3
To EDC center pin A 22
–
TECHNICAL VIEW
8527
8528
WIRING DIAGRAM
PERSPECTIVE VIEW
8529
8530
RESISTANCE BEHAVIOR
ELECTRONIC SYSTEMS
III.91
S
TRALIS
AT/AD
Fuel temperature sensor (47042)
Features
Vendor
BOSCH
Maximum torque
35 Nm
This N.T.C. type sensor located on the fuel filter on the engine left side detects fuel temperature and enables the
electronic center to measure fuel density and volume for delivery correction.
Connector
Function
Cable colour
2
To EDC center pin A 6
–
3
To EDC center pin A 11
–
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