Test G-4: Windshield Wiper Interval Cannot Be Adjusted

Check input signals from windshield wiper intermittent wiper interval adjusting knob. See INPUT SIGNAL CHECK FUNCTION  under SELF-DIAGNOSTIC SYSTEM. If input signal test shows a fault, check windshield wiper input circuit. See TEST O-19: WINDSHIELD WIPER INTERMITTENT INTERVALS ADJUSTING KNOB CIRCUIT CHECK  . If input signal test is okay, replace front-ECU or ETACS-ECU.