Pressure Sensors - Volvo ECS Training Tips And Tactics

ECS Gen. 2

Pressure sensors

Pressure vs.
voltage
ECS Gen. 2 systems have four pressure sensors (five if
front air suspension is fitted):
B24 - lift axle lifting bellows
B55 - lift axle suspension bellows
B56 - front axle bellows
B57 - drive axle bellows RH
B58 - drive axle bellows LH
This allows the pressure in each individual circuit to be
separately monitored.
This means that the pressure control valve is not needed,
Sensed pressure - bar
1
3
5
7
9
11
Voltage to ECU
0.8
1.5
2.2
2.8
3.5
4.2
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