The "high-voltage and air conditioning training system" from the well known CarTrain series guides students even further into the features of high-voltage systems in vehicles. The system teaches specific diagnostic skills as well as the necessary theoretical and practical knowledge needed for a proper diagnosis or customer-oriented servicing of vehicles. In order to accomplish this objective, the training system focuses on the topics of high-voltage drive systems, intrinsic safety systems and high-voltage air conditioning equipment. The specific benefits imbued by the system are based on the fact that it possesses an authentic and operational high-voltage air-conditioning system of its own. This allows for observation of the individual components and execution of servicing work such as that commonly carried out at vehicle repair workshops. In addition, the training system is conceived in such a way that it is not possible for it to cause injury at any time.