Abstract: Provided is a test shoe for testing electrical connections in a main distribution board of the telecommunications industry. This test shoe has a housing, a baseplate connected to the housing and contact elements arranged in the baseplate, and at least two contact elements of the test shoe are electrically connected to one another within the housing in such a way that they form a loopback. Also provided is a test shoe arrangement with a test shoe having the features presented above.

Abstract: A method and a regulating arrangement (10) for heating the cab (21) of a vehicle is described. In the event of a start in a cold environment, a heating program is carried out to heat the cab (21) more rapidly, if the diesel engine temperature, measured by a temperature sensor (15), is below a predetermined value. The supply of air to the diesel engine is reduced via the throttle valve (13) to set a currently predetermined intake pressure. If the driver demands a higher acceleration of the vehicle by actuating the accelerator pedal, throttling can be temporarily canceled. When the engine temperature has exceeded a second value, the heating program is terminated and the engine control (10) returns to normal operation. In order to assist the heating phase, in addition, the exhaust-gas recirculation valve (17) may be closed and electrical consumers switched on.

Abstract: The invention relates to a method and a regulating arrangement (10) for heating the cab (21) of a motor vehicle with a diesel engine (16). In this case, in the event of a start in a cold environment, a heating program is carried out in order to heat the cab (21) more rapidly, if the temperature of the diesel engine (16), measured by a temperature sensor (15), is below a predetermined limit value. In this heating program, the supply of air to the diesel engine is reduced via the throttle valve (13), in order to set a currently predetermined intake pressure. If the driver demands a higher acceleration of the vehicle by actuating the accelerator pedal, throttling can be temporarily canceled. When the engine temperature has exceeded a second limit value, the heating program is terminated and the engine control (10) returns to normal operation. In order to assist the heating phase, in addition, the exhaust-gas recirculation valve (17) may be closed and electrical consumers switched on.