Navigation System: Testing and Inspection Navigation System INSPECTION NOTE:   If no problems are found in "CHECK NAVIGATION OPERATION", "CHECK EACH CONNECTION" and "CHECK EACH VEHICLE SIGNAL" as described below, check the 
navigation system  circuit.
	 1.	 CHECK NAVIGATION OPERATION	 Start the engine and check that the opening screen is displayed. Standard: Opening screen is displayed.
	 OK: Normal.
	 NG: If the screen is not displayed, check the following items.
	 -
	 The map disk (DVD-ROM) is set in the 
navigation system  unit
	 -
	 Check the connection of the power supply connector at the backside of the navigation unit. If wire connection is correct or has got repaired, check again that the opening screen is displayed.
	 If it is not displayed at this time, it indicates the navigation unit trouble.
	 2.	 CHECK EACH CONNECTION	 1.
	 Press the <
> key to display the AUDIO OFF screen.	 2.	 Touch the screen in the order of (1) to (6) shown in the figure.	 3.	 The display will switch to the Dealer Diag Menu screen.	 -	 CHECK MICROPHONE, AUX AND REARVIEW CAMERA 	 NOTE:	 1.	 Touch {Connection Info.} on the <> screen.	 2.	 Check that "Connect" is displayed in all the MIC, AUX and Camera  items.	 NOTE:	 NC: Abnormal. Check the signal line connection. If there are no problems, the unit could be faulty.	 -	 CHECK GPS ANTENNA	 NOTE:	 1.	 Touch {Vehicle Signal Info.} on the <> screen.	 2.	 Check that "Connect" is displayed in the GPS Antenna item.	 Connect: Normal.	 NC: Abnormal. Check the GPS antenna connection.	 -	 CHECK UART COMMUNICATION	 NOTE:	 1.	 Touch {Vehicle Signal Info.} on the <> screen.	 2.	 Check that "ON" is displayed in the UART signal item.	 OK: Normal.	 NG: Abnormal. Check the signal line connection. If there are no problems, the unit could be faulty.	 NOTE:camera  image is displayed.	 3.	 CHECK EACH VEHICLE SIGNAL	 1.	 Press the <> key to display the AUDIO OFF screen.	 2.	 Touch the screen in the order of (1) to (6) shown in the figure.	 3.	 The display will switch to the Dealer Diag Menu screen.	 -	 CHECK BACK SENSOR	 1.	 Touch {Vehicle Signal Info.} on the <> screen.	 2.	 Turn the parking brake switch to ON and depress the brake pedal, then put the gear in reverse.	 3.	 Make sure that "ON" is displayed in the Reverse item.	 ON: Normal.	 OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.	 -	 CHECK IGNITION SWITCH.	 1.	 Touch {Vehicle Signal Info.} on the <> screen.	 2.	 Make sure that "ON" lights in the IGN item and then the screen becomes dim.	 ON: Normal.	 OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.	 -	 CHECK SPEED SENSOR	 NOTE:	 -	 Before starting inspections, check the safety around the vehicle.	 -	 Lift up the vehicle as necessary.	 -	 When the diagnostic trouble code is input in the VDCCM, perform the Clear Memory operation.	 1.	 Touch {Vehicle Signal Info.} on the <> screen.	 2.	 Move the vehicle slowly 2 to 3 meters (6.6 to 9.8 ft).	 3.	 Check that "ON" is displayed in the Speed item.	 ON: Normal.	 OFF: OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.	 -	 CHECK PARKING BRAKE	 Touch {Vehicle Signal Info.} on the <> screen.	 NOTE:   Because the navigation unit does not read the parking brake signal, OFF is displayed constantly.	 4.	 CHECK DVD-ROM	 Insert a DVD-ROM (region code 1) into the navigation unit and play it, and the screen switches to the image from DVD.	 NOTE:	 Standard: DVD images are displayed.	 OK: Normal.	 NG: If DVD images are not displayed, check the following points. If no problems are found, the navigation unit is faulty.	 -	 Is a DVD-ROM set in the navigation unit?	 -	 Is the DVD-ROM set in the unit properly?	 -	 Is a correct type of DVD (DVD-VIDEO only) used?	 -	 Is the playing side dirty or damaged?	 NOTE:	 -	 DVD images cannot be displayed while driving or the parking brake is not applied.	 -	 The rear entertainment system cannot play MP3 files and DVD-Audio.	 5.	 MESSAGE LIST