Symptom Table: Operation

SYMPTOM CHART

Symptoms	Check items	Possible malfunction location / Action to take
Multifunction switch and preset switch operation does not work.	All switches cannot be operated. "MULTI AV" is displayed with CONSULT-III.	Multifunction switch power supply and ground circuit. AV communication circuits between AV control unit and multifunction switch. Perform CONSULT-III self-diagnosis. Refer to "CONSULT - III FUNCTION (MULTI AV) ".
	All switches cannot be operated. "MULTI AV" is not displayed on system selection screen the CONSULT-III is initialized.	AV control unit power supply and ground circuit malfunction. Refer to "AV CONTROL UNIT : DIAGNOSIS PROCEDURE ".
	Only specified switch cannot be operated.	Multifunction switch or preset switch malfunction. Perform multifunction switch and preset switch self-diagnosis function. Refer to "DIAGNOSIS DESCRIPTION ".