Unit Check

Unit Check




Select the item you want to check and the diagnostic starts.




Display
This diagnostic performs additional checks on the communication bus between the control unit and the display. In addition, the internal electronics and touch screen functionality are confirmed.

- When the connection is NG, first check for loose terminals at the navigation unit and the display unit connections. Next check for an open or short in the communication line between the navigation unit and the display unit. If the line is found to have an open or short, replace the affected shielded harness.
- If the ROM or RAM is NG, replace the display unit.
- The version represents the software version in the display.




Radio
This diagnostic checks the audio connections. If not OK, do the troubleshooting for audio system.

Navi ECU
This screen looks for problems the navigation unit. When this diagnostic is initiated, there is a delay of up to a minute while it runs.

NOTE: This diagnostic cannot be canceled when running.




- If "V-RAM" or "D-RAM" is NG, then replace the navigation unit.
- If "GPS" indicates "NG (ANT)", then check the entire GPS antenna wire from the navigation unit to the antenna. If the wire is crushed or damaged, try a known good antenna. If this diagnostic reads OK, then order a new GPS antenna. If the diagnostic still reads NG (ANT), then replace the navigation unit.
- "DVD ROM" represents the database version on the DVD. This information can also be found in Setup Screen 4 by selecting System Information.
- "Serial No." should be the same as the serial number found on the underside of the navigation unit. This number is needed to obtain the security code from the Interactive Network (IN) system.
- The Mem Clr is for factory use and should not be used unless instructed by the factory. Selecting this will erase the customer's settings, personal information, and anything else stored in memory.

PC Card info.




There is no PC Card in the PC slot, and the screen should say, "PC Card is not inserted."

NOTE: Do not insert any card or object into the slot.




If the factory provides a PC card and instructs you to insert a card, then the screen displays the Manufacturer, and Product Name as shown in the following screen.

Hard Key
This diagnostic tests the joystick, and the buttons that surround it. For this model, the joystick and buttons utilize the GA-Net bus for communication to the navigation control unit.




To complete the test, touch each button, and move the joystick to each indicated position. As each function is tested, the corresponding button on the display should highlight. To exit, push in and hold the joystick.