The vehicle control system

The invention relates to a vehicle control system which comprises a contactor system, a master control unit and a fault diagnosis system, wherein the contactor system comprises one or more contactors; the master control unit is connected with the contactor system through a first connection and a second connection; the master control unit is used for transferring a control signal to the contactor system for controlling the contactor through at least one of the first connection and the second connection; the fault diagnosis system is used for diagnosing the fault of the first connection and the second connection.