Wire harness welding quality rapid detection device

The invention discloses a wire harness welding quality rapid detection device, which is characterized in that firstly, an IO arrangement module sends a high level signal to a level overturning module when a detection meter pen is in contact with a pin between the IO arrangement module and a connector to generate the high level signal, and secondly, the level overturning module performs level overturning on the high level signal to form a low level signal; the IO port expansion module sends the pin level state generated by the low level signal to the MCU module, and the MCU module inquires the position of the pin between the IO arrangement module and the connector according to the pin level state. According to the rapid detection device for the welding quality of the wire harness, only the pin at one end of the connector needs to be positioned, the connection relation of the pin at the other end of the connector can be directly played or displayed, whether the connection or welding relation of the wire harness