CAR-NAVIGATION SYSTEM DOES NOT OPERATION [CAR-NAVIGATION SYSTEM]

id0903e8100100

Possible DTC	Even if the map screen is touched, the car-navigation system cannot be operated
POSSIBLE CAUSE	•  Audio unit malfunction (bad LCD panel) •  Car-navigation unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	DETERMINE IF MALFUNCTION CAUSE IS AUDIO UNIT LCD PANEL •  Switch the ignition ON and launch the audio unit diagnostic assist function. (See DIAGNOSTIC ASSIST FUNCTION [AUDIO].) •  Select diagnostic assist code 01 display inspection. •  Is the display normal?	Yes	Go to the next step.
		No	Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
2	DETERMINE IF MALFUNCTION CAUSE IS CAR-NAVIGATION UNIT •  Select diagnostic assist code 16 external device connection information clearing. •  Switch the ignition off (LOCK). •  Switch the ignition ON (engine off or on). •  Launch the audio unit diagnostic assist function. (See DIAGNOSTIC ASSIST FUNCTION [AUDIO].) •  Select diagnostic assist code 15 vehicle NAVI signal verification. •  Is NAVI (USB) NG displayed?	Yes	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)
		No	Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)