The utility model discloses an instrument rapid test
system, which comprises a master control module, a
signal modulation module and a power supply module, the master control module is used for receiving an instruction of a user and sending a control instruction to the
signal modulation module, and the
signal modulation module communicates with an instrument through a CAN communication line based on the instruction sent by the master control module. The
power module supplies power to the instrument; the test based on the modules comprises the following steps: setting fault codes and
control parameters for different fault lamps and writing the fault codes and the
control parameters into a memory, reading the fault codes and the
control parameters from the memory by a
microcontroller, lightening the corresponding fault lamps, controlling a
timer to start timing, and generating an interruption when the
timer reaches a preset time interval; the
microcontroller responds to the interruption of the
timer, turns off the fault lamp and executes the operation of turning on the next fault lamp; the above process is repeated, and timing lighting of all fault lamps is achieved. The fault lamp triggering condition of the whole vehicle can be simulated, the lightening duration of the indicator lamp can be controlled, the numerical value of a triggering interval and lightening detection of the indicator lamp can be better simulated, and therefore better instrument and vehicle matching design is achieved.