A trailer control valve for a tractor includes a body defining a supply port and first and second delivery ports. The supply port is configured for fluid communication with a fluid source on the tractor. The first and second delivery ports are configured for fluid communication with glad-hand connectors through which fluid is supplied from the tractor to a trailer. A pressure sensing solenoid receives fluid signal from each of the first and second deliver ports and selectively passes fluid signal therefrom to a pressure sensor as a function of a brake control signal received by a controller that controls the pressure sensing solenoid.

A trailer control valve for a tractor includes a body defining a supply port and first and second delivery ports. The supply port is configured for fluid communication with a fluid source on the tractor. The first and second delivery ports are configured for fluid communication with glad-hand connectors through which fluid is supplied from the tractor to a trailer. A pressure sensing solenoid receives fluid signal from each of the first and second deliver ports and selectively passes fluid signal therefrom to a pressure sensor as a function of a brake control signal received by a controller that controls the pressure sensing solenoid.

A method for actuating at least one solenoid valve includes detecting a valve actuation signal, energizing the at least one solenoid valve with a specific constant control current for a specific actuation time which follows the detection of the valve actuation signal, and increasing the control current to a full actuation current for a full actuation time which follows the actuation time. The specific constant control current and the actuation time are dimensioned in such a way that at least two different types of solenoid valves can be at least partially opened by the control current during the actuation time.

A method for actuating at least one solenoid valve includes detecting a valve actuation signal, energizing the at least one solenoid valve with a specific constant control current for a specific actuation time which follows the detection of the valve actuation signal, and increasing the control current to a full actuation current for a full actuation time which follows the actuation time. The specific constant control current and the actuation time are dimensioned in such a way that at least two different types of solenoid valves can be at least partially opened by the control current during the actuation time.