A wiring module includes an insulating protector that holds a connection member for connecting adjacent electrode terminals, and a temperature detecting member for detecting the temperature of the connection member. The temperature detecting member includes a temperature detecting element, an electric wire connected to the temperature detecting element, an element accommodating section in which the temperature detecting element is accommodated and through which the electric wire is led, and a detection section that is contiguous to the element accommodating section and is arranged to be in contact with the connection member. The element accommodating section is arranged in parallel or perpendicular to the line connecting the shaft centers of two electrode terminals that are connected to each other by the connection member.