An electric component module 10 includes a first board 21 having a first circuit 31 including a noise generation source, a second board 22 having a second circuit 32 including a microcomputer 35 that transmits and receives a communication signal CS to and from a control circuit 41 other than the first circuit 31, the second board 22 being separated from the first board 21, and an electric wire 51 that transmits and receives a simple signal SS between the first circuit 31 and the second circuit 32.