Drive Axle (Not 4X2 Tractor) - Volvo ECS Training Tips And Tactics

ECS Gen. 2
Solenoid valve
If the driver presses the bogie switch to ʻlowerʼ position,
block - drive
and/or the ECU receives a ʻlowerʼ signal from a height
axle - 4x2 -
sensor, the ECU sends +24 V to energise the drive axle
suspension lower
solenoid.
The control solenoid is not energised, so a path from the
drive axle solenoid valve to exhaust, via the control valve,
is created.
The chassis is lowered to the required height.
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