Part One
Navigation System Diagnostic Mode
Start-up Procedure and Diagnostic Menu
Start the vehicle, and at the map screen use the navigation unit hard buttons as described:
NOTE: If the map screen does not show, refer to GPS initialization.
Press and hold the MAP/GUIDE, MENU, and CANCEL buttons for about 3 seconds. The display screen goes directly to the Select Diagnosis Items menu shown below.
- Self-Diagnosis Mode (runs the automatic diagnosis of the navigation system)
- Detail Information & Setting (allows you to manually diagnose the navigation system)
From the Select Diagnosis Items menu, select the Self-Diagnosis Mode. The screen changes to the System Links screen, and automatically begins running the self diagnostic. See the System Links section for more information.
System Links
1. Enter this screen by selecting Self-Diagnosis Mode from the Select Diagnosis Items menu. The message at the bottom of the screen flashes indicating the diagnostic is running.
2. Select the icon you want to diagnose, then select or view the details of that diagnostic function.
The System Links function runs automatically. The diagnostic tests the following:
- Most of the wires connecting the navigation components are shown in the block diagram.
- The results from the various components shown in the block diagram.
- The microphone is tested by listening to the long sound produced by the audio-navigation unit from the speakers when the diagnostic is started. This requires that the audio system be operating normally.
When the diagnostic finishes, the icons turn different colors based on their test status. The color definitions are shown following, and can also be seen by selecting Help on the System Links screen.
The indication on the screen may not change until you exit and reenter the Self-Diagnosis mode. In some cases, you may have to restart the engine for the indication to change. After you repair the affected component or harness, repeat this diagnostic.
Each icon color is explained in the table.
NOTE: By selecting the HELP icon, you can see a description for each color.
Icon Color Information
Factory diagnostic screen In Line Diag
NOTE: If the vehicle left the factory in the factory diagnostic mode or if the audio-navigation unit is replaced, you will see this screen every time you turn on the ignition.
When a navigation control unit is powered up for the first time at the factory or after replacement with a new or remanufactured audio-navigation unit, the factory diagnosis screen (In Line Diag) appears. Normally the factory does the steps necessary to verify proper operation and terminate the factory diagnostic.
Until the proper confirmation sequence is done, the screen appears every time the vehicle is started.
Follow the steps below to prevent the screen from showing up in the future:
- Press and hold the MENU, MAP/GUIDE, and CANCEL buttons for about 3 seconds. The Select Diagnosis items screen appears.
- Press and hold the MAP/GUIDE button for about 5-10 seconds. A screen with a Complete button appears.
- Press complete, then Return, and then shut the key off for 5 seconds. Do not disconnect the battery during this period as the unit is saving the setting to the SRAM memory. The In Line Diag should not appear again.
- Restart the vehicle, and confirm normal operation by completing the TQI of the Navigation System Service Bulletin.
Monitor Check
Overview of navigation display
The illumination input from the gauge brightness control provides back lighting for the buttons surrounding the screen.
These screens allow you to troubleshoot the navigation display. Select the item you want to troubleshoot, and follow the diagnostic instructions.
- RGB Color
- Gray Tone
- White Raster
- Black Raster
- Color Pattern
- Monitor Adjustment
- Touch Panel Check 1
- Touch Panel Check 2
- Touch Panel Calibration
Detailed Information & Settings
This section allows you to run specific diagnostic and allows additional setting choices for some screens that are not shown when selecting an icon from the System Links screen.
When you select the item Detail Information & Setting menu, the main diagnosis menu appears.
RGB Color
This screen verifies that the navigation display is receiving the video (R, G, B and Composite sync) signals properly. The three primary colors should all appear without distortion. The combination of all three should produce a central white section. If any of the colors are missing, troubleshoot for the color signal Symptom Troubleshooting. If the picture has lines in it or scrolls horizontally, or vertically, troubleshoot for a Composite sync problem Picture Has lines Or Rolls (With Navigation).
Gray Tone
This screen diagnoses problems with contrast. You should be able to see the changes from bar to bar across the scale. It is normal for the two bars on either side to appear the same. If you can't see changes from bar to bar, replace the audio-navigation unit.
Black Raster
This diagnostic screen checks for pixels that may be stuck on. The entire display must be black. If pixels are stuck on, replace the audio-navigation unit.
Color Pattern
The chart shows the colors being used for the map and menu screens. This is for factory use only. To check the color signal, use the RGB Color diagnostic found under the Monitor Check.
White Raster
This diagnostic screen checks for pixels that may be dead (off). The entire display must be white. If there are dead pixels, replace the audio-navigation unit.
Monitor Adjustment
This allows you to center the navigation display. Use the joystick to move the picture up/down or left/right. It is unlikely that you will ever need to adjust the monitor position. The Default button will reset the display position to factory specifications.
Touch Panel Check 1
The panel touch sensing system consists of a touch sensitive resistive membrane covering the display. Contrary to other systems using infrared beams, the screen has to be physically touched to make it work. The display has the capability of 479 locations (left to right), and 233 touch locations (top to bottom). The upper left hand corner is position (0, 0) and the lower right hand corner is (479, 233) as displayed. Touching anywhere on the screen displays the coordinate of the location, and a + icon appears where you touched the screen. If any areas of the screen either don't respond, or respond at some other location when touched, then replace the audio-navigation unit.
NOTE: Unlike earlier screens that used infrared sensors, direct sunlight does not affect this test.
Touch Panel Check 2
If you touch any icon on the screen, the icon should change color. If any icons on the screen do not respond, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
Touch Panel Calibration
The display screen uses a touch sensitive membrane. This means that every location of the entire surface of the display is touch sensitive. This diagnostic allows alignment of these touch locations with the location of the button images on the screen.
Normally this should never need adjustment, and is used only to adjust the touch locations for parallax (the touch locations appear different when viewed at an angle). However, if an adjustment is necessary, follow this procedure:
- The screen consists of the + button icons. Touch the center of the five + buttons in order 1-5.
- To store any change you make, touch the Set button.
- Use the Return key to exit the diagnostic.
Unit Check (Quick Check)
Some of the tests and screens that are displayed under the Unit Check are different from the more detailed checks listed in other areas of this service information.
To start the test, select the item you want to check.
- Display
- Radio
- GPS
- ECU Info.
- PC Card Info.
- Hard Key
- Yaw Sensor
- DVD
Display
This performs additional checks on the communication bus between the navi CPU and the display. In addition, this test checks the internal electronic functions.
If the connection is NG, replace the audio-navigation unit.
- Connection verifies internal communications.
- The version represents the software version for the display.
Radio
This diagnostic screen checks the internals of the radio (AM and FM) and the CD player. If NG is indicated, replace the audio-navigation unit.
GPS
If GPS indicates NG (ANT), then check the entire GPS antenna wire from the audio-navigation unit to the antenna only. If the wire is crushed or damaged, try a known-good antenna. If the diagnostic then reads OK, replace the original GPS antenna. If the diagnostic still reads NG (ANT), replace the audio-navigation unit.
Select information to see the GPS satellite details.
ECU Info.
This screen looks for problems in the audio-navigation unit. When you initiate this diagnosis, the audio-navigation unit may freeze or delay up to a minute while the diagnosis runs.
NOTE: Do not try to end this diagnostic by pressing OK or Mem clear before it finishes, otherwise the system may reboot.
- If V-RAM or D-RAM is NG, replace the audio-navigation unit.
- DVD lid displays the state of DVD Lid of audio-navigation unit.
- Program Flash: Displays the version of the navi software in memory.
- Program on DVD: If displayed, this value represents the version of the navi software on the navi DVD.
- DVD version represents the database version on the DVD. You can find this information in either the Setup Screen Version, or in the Diagnostic Screen Version.
- Serial No. should be the same as the serial number found on the underside of the audio-navigation unit. You need this number 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 clear the customer's settings, personal information, GPS orbital data, and anything else stored in memory.
PC Card info.
There is no PC Card in the PC slot, and the screen should display, "PC Card is not inserted."
NOTE: Do not insert any card or object into the slot.
The PC card slot is used for these purposes:
- For playing MP3 and WMA formatted files (see owner's manual for related information).
- For transfering customer's personal data to a new navigation unit.
- For factory use: If the factory provides a PC card and instructs you to insert it, the screen displays the Manufacturer, and Product Name as shown in the following screen. Follow the instructions provided by the factory to complete the test.
Hard Key
This diagnostic screen checks the status of the hard buttons surrounding the navigation display. When you press each hard button, the corresponding item on the screen should turn blue. Touch the return key, or press and hold the joystick to exit.
NOTE: VOL/PWR knob operation (turn, push) and OPEN/CLOSE button operation are not displayed.
