Unit Check

Unit Check

To start the test, select the item you want to check.
- Display
- Radio
- Navi ECU
- PC Card Info
- Hard Key






Display

This performs additional checks on the communication bus between the navigation unit and the navigation display unit. 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, the navigation display unit and the audio unit connections. Next, check for an open or short in the communication line between the navigation unit, the navigation display unit and the audio unit. If you find the line has an open or short, replace the affected shielded harness.
- If the ROM or RAM is NG, replace the navigation 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 the audio system.






Navi ECU

This screen looks for problems with the navigation unit. When you initiate this diagnostic the navigation unit may delay up to a minute while the diagnostic runs.

- If the "V-RAM" or "D-RAM" is NG, then replace the navigation unit.
- If the "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. You can also find this information in setup by selecting System Information.
- "Serial No." should be the same as the serial number found on the underside of the navigation unit. You need this number to obtain the security code from the Interactive Network (iN) system.
- "Mem Clear" is for factory use, and should never be used unless instructed by the factory. Accidental selection will erase the customer's personal data, PINS, and settings. If selected, a popup box is appears asking if you want to clear the memory. If so, select "Yes".






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.

NOTE: The "FILES" is for factory use only.






Hard Key

This diagnostic checks the status of each hard button surrounding the navigation display. When each hard button is pressed, the corresponding item on the screen should flash "blue". Touch the return key, or press and hold the joystick to exit.