Diagnosis switch

摘要

A diagnosis system has a diagnosis switch, and has a controller actuated by the switch for checking the operation of sensors and circuits and for lighting an alarm lamp in accord with a coded lighting signal, the number of times the alarm lamp is lit indicating the result of the diagnosis. The diagnosis switch includes a pair of diagnosis terminals which are similar to a pair of fuse terminals and are provided in a fuse box or in a joint box having a fuse box, and includes a spare fuse which can be inserted into the diagnosis terminals so as to produce a signal to the controller for starting the diagnosis.