Switch Input Check

After the intermittent beeper sounds at the initial stage of self-diagnostic mode, a beeper sounds continuously while any of the following switch inputs are switched from OFF to ON:

Parking brake switch, VSA OFF switch, cruise control MAIN, SET, RESUME, CANCEL switches, select, previous, next switches, DISTANCE switch A, DISTANCE switch B, CMBS OFF switch, and dashlights brightness controller (VOL (+), VOL(-).