Symptom Table: Operation

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 on system selection screen when the CONSULT is started.	Multifunction switch power supply and ground circuit. AV communication circuit between AV control unit and multifunction switch. Perform "Self diagnosis Result" of "MULTI AV" with CONSULT. Refer to "CONSULT FUNCTION ".
	All switches cannot be operated. "MULTI AV" is not displayed on system selection screen when the CONSULT 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 "ON BOARD DIAGNOSIS FUNCTION ".
Fuel economy display, vehicle setting operation is abnormal.	There is malfunction in the CONSULT self-diagnosis result. Refer to "CONSULT FUNCTION ".	Perform detected DTC diagnosis. Refer to "DTC INDEX ".
	There is no malfunction in the self-diagnosis results. Refer to "CONSULT FUNCTION ".	Ignition signal circuit malfunction. (AV control unit)