Abstract: A plug adapter connects to a solenoid valve already mounted in a motor vehicle. The plug adapter has a plug connector for receiving an electrical control signal from a control unit of the motor vehicle for operating the solenoid valve. The plug adapter includes a solenoid valve connector for detachable coupling of the plug adapter to the plug connector of the solenoid valve. The solenoid valve connector and the plug connector are matched to one another in terms of plug form and electrical signal transmission. An electronics component, such as a microcontroller, processes an electrical output signal for operating the solenoid valve when an electrical connection is established between the electronics component and the solenoid valve via the solenoid valve connector when the plug adapter is plugged into the plug connector.

Abstract: An electromagnetic valve, such as a pilot valve for controlling a main valve or a pilot-operated valve in a divert-air valve, may include at least one valve member in operative connection with a plunger movable along a first axis and at least one coil element. A movement of the plunger or of the valve member is caused by an energization of the coil element, and at least one sensing element by which at least one parameter of the coil element is detectable. The position of the plunger and/or of the valve member can be determined by the parameter.