Control valve/axial solenoid
The control valve/axial solenoid are in the coupling unit for the active on demand coupling (AOC).
The axial solenoid receives a constant pulse width modulated (PWM) signal from the control module. The control signal from the control module is used by the solenoid to change the position of the control valve. This regulates the pressure to the operating piston in the multi-plate clutch.
Four wheel drive is disabled if there is a fault in the control valve/axial solenoid.
There are diagnostics for the control valve/axial solenoid.