Iveco Stralis AT/AD. Manual — part 338
Compressed air connections
1
-
Power from the compressor
24 -
PTO
25 -
Output for 10.5 bar compressed air suspension
23 -
To the compressor for Energy Saving control
3
-
Venting to outside air
21 -
To the 10.5 bar axle reservoir
22 -
To the 10.5 bar axle reservoir
23 -
To the 8.5 bar parking brake manual distributor and trailer recharge and parking air reservoir
24 -
To the 8.5 bar service reservoir
Drier electrical connections
6.1 -
Negative for thermostatic resistance
6.2 -
Positive for thermostatic resistance
4-way protection valve electrical connections
6.2 -
Rear circuit air pressure signal
6.3 -
Positive for power
6.4 -
Negative
6.5 -
Front circuit air pressure signal
6.6 -
Positive for power
6.7 -
Negative
001682t
000831t
TECHNICAL VIEW
WIRING DIAGRAM
III.136
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
This non self-limited coaxial component consists of an electrical and a compressed air section, the former consisting pf two switches
and two position sensors generating the braking signals the center needs to manage the system.
These signals are redundant to guarantee top reliability.
The compressed air section distributes pressure to the front axle braking circuit and to the trailer control servo distributor.
These pressures are always available but are mostly used in case of electrical/electronic system breakdown.
000828t
Compressed air connection
11 -
Axle reservoir supply
12 -
Axle reservoir supply
22 -
Axle proportional relay valve output
3
-
Discharge
Electrical connections:
61.1
Positive for sensor 1 (ECU X5 pin 4)
61.2
Negative for sensor/switch
61.3
Negative from switch (ECU X5 pin 6)
61.4
Signal from sensor 1 (ECU X5 pin 4)
62.1
Positive for sensor 2 (ECU X5 pin 1)
62.2
Negative for sensor/switch
62.3
Negative from switch (ECU X 5 pin 3)
62.4
Signal from sensor 1 (ECU X5 pin 2)
62.5
Negative stop light relay
ELECTRONIC SYSTEMS
III.137
S
TRALIS
AT/AD
Duplex distributor 78059
000854t
000990t
This non self-limited coaxial component consists of a compressed air and an electrical section, the former distributing braking
control pressure to the front axle, the rear axle and the trailer control servo distributor.
The electrical section ensures sending the braking signal to the EDC center and to the stop light control relay.
000792t
Compressed air connections:
11 -
Power from the axle reservoir
12 -
Power from the axle reservoir
21 -
Valve output to servo distributor relay valve and
trailer control
22 -
Valve output to axle relay
3
-
Vent to outside air
Electrical connections:
1
-
Positive for stop lights/EDC
2
-
Input positive
3
-
Positive for EDC
4
-
Input positive
III.138
ELECTRONIC SYSTEMS
S
TRALIS
AT/AD
Base - January 2003
This component consists of a proportional electro valve, a compressed air control relay and a pressure sensor.
It sends the front axle the braking pressure calculated by the center according to braking requested.
60935
000831t
Compressed air connections
1
-
Axle reservoir power
2
-
ABS axle valve output
3
-
Discharge
4
-
Safety control from the duplex distributor
000804t
Electrical connections
6.1 -
Positive for sensor 1 (ECU X4 pin 9)
6.2 -
Negative for sensor (ECU X4 pin 3)
6.3 -
Sensor signal (ECU X4 pin 6)
6.4 -
Negative for electro valve (ECU X4 pin 1)
6.5 -
Positive for electro valve (ECU X4 pin 2)
PERSPECTIVE VIEW
WIRING DIAGRAM
ELECTRONIC SYSTEMS
III.139
S
TRALIS
AT/AD
Proportional relay valve for axle 78057
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