Part One
Navigation System Diagnostic Mode
Start-Up Procedure and Diagnostic Menu
There are two ways to enter the diagnostic mode:
Mode 1:
Start the vehicle, and at the disclaimer screen use the navigation hard buttons:
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.
- Self-Diagnosis Mode (runs the automatic diagnosis of the navigation system)
- Detail Information & Setting (Can help you to manually diagnose the navigation system)
Mode 2:
Start the vehicle. When the globe screen appears, connect the SCS service connector Navigation System Forced Starting of the Audio-Navigation Unit to the navigation service check connector located by passenger's under-dash fuse/relay box. The screen changes to the System Links screen, and automatically begins running the self diagnosis. See the System Links section for more information.
NOTE: When finished troubleshooting, make sure to remove the SCS service connector.
USA models
Canada models
System Links
1. Enter this screen by selecting Self Diagnosis Mode from the Select Diagnosis Items main menu or by connecting the SCS service connector. The message at the bottom of the screen flashes indicating the diagnosis is running. Make sure you enter the anti-theft code.
NOTE: The system cannot complete a full diagnosis unless the engine is running.
USA models
Canada models
2. Rotate the interface dial to select the icon you want to diagnose. Press the interface dial to see the details of that diagnostic function.
The System Links function runs automatically and displays a flashing message at the bottom of the screen reminding you to have the engine running for the test. The diagnosis tests the following:
- Most of the wires connecting the navigation components that are shown in the block diagram.
- The results from the various components shown in the block diagram.
- The audio-navigation unit tests the microphone by listening to the bong sound produced by the audio-navigation unit from the speakers when the diagnosis is started. This requires that the audio system be operating normally.
When the diagnosis finishes, the icons turn different colors based on their test status. The color definitions are shown below 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 diagnosis.
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, you will see this screen every time you turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode. You may also see this screen if you recently replaced the audio-navigation unit.
When the audio-navigation unit is powered up for the first time at the factory or sometimes when a remanufactured audio-navigation unit is installed, the factory diagnostic screen (In Line Diag) appears. Normally the factory does the steps necessary to verify proper operation and terminate the factory diagnosis. Until the proper confirmation sequence is done, the screen appears every time the vehicle is started.
Follow these steps to prevent the screen from showing up in the future:
- Press and hold the MENU, MAP/GUIDE, and CANCEL buttons at the same time until the Select Diagnosis Items screen comes up. Then release the buttons.
- Press and hold the MAP/GUIDE button until the In Line Diag Setting screen appears.
- Set the In Line Diag Setting to Complete, then select Return twice to exit the diagnostic mode.
Detailed Information & Settings
These sections allow you to run a specific diagnosis 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 Detail Information & Setting menu, the main diagnosis menu is displayed.
After the display changes to the Diagnostic Menu, select the item you want to check, and the test begins. To return to the previous screen, select Return.
Monitor Check
Overview of the navigation display unit
- The navigation display unit communicates with the audio-navigation unit over its own GA-Net bus. Information sent by the audio-navigation unit to the navigation display unit includes commands to control the LCD back light.
- The security system protects the navigation display unit by daisy-chaining the security signal through the components.
These screens allow you to troubleshoot the navigation display unit. Select the item you want to troubleshoot, and follow the diagnostic instructions.
RGB Color
This screen verifies that the display unit 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 Symptom Troubleshooting.
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 navigation display unit Service and Repair.
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 navigation display unit Service and Repair.
Color Pattern
The diagnostic screen 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 diagnosis 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 navigation display unit Service and Repair.
Monitor Adjustment
This is for factory use only. The Default button will reset the display position to factory specifications.
Unit Check (Quick Check)
Some of the tests and screens that are displayed under the Unit Check are different from the other detailed checks.
To start the test, select the item you want to check starts.
- Display
- Radio
- GPS
- Aircon
- HFL
- USB Memory Information
- Sub Display
- Hard Key
- Yaw Sensor
- ECU Info.
- Rear Camera
- XM (Canada models)
- Smart Card
- HDD
- DVD Mech
USA models
Canada models
Display
This diagnosis does additional checks on the communication bus between the audio-navigation unit and the navigation display. This test also checks the internal electronic functions.
- When the connection is NG, first check for loose terminals at the audio-navigation unit and the navigation display unit connections. Next check for an open or short in the communication line between the audio-navigation unit and the navigation display unit. If the line has an open or short, replace the affected shielded harness.
- The version represents the software version in the display.
Radio
This diagnostic screen checks the audio-navigation unit internal radio tuner and CD/DVD player. If connection is NG, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
NOTE: If the XM link appears red, but the radio link appears green in the System Links, refer to audio system symptom troubleshooting.
GPS
This diagnosis tests the GPS antenna connection and the GPS receiver condition.
- In the GPS menu, if the Antenna indicates NG, then check the entire GPS antenna wire from the audio-navigation unit to the GPS antenna. If the wire is crushed or damaged, substitute a known-good GPS antenna Service and Repair. If this diagnosis reads OK, replace the original GPS antenna Service and Repair.
If the diagnosis still reads NG (Antenna), then replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
- Select Information to see the GPS satellite details.
Aircon
This diagnosis tests the climate bus connection (AC-SI and AC-SO) between the audio-navigation unit and the climate control unit. Make sure the engine is running for this test.
When the connection appears NG, go to Navigation cannot control HVAC by voice command troubleshooting Symptom Troubleshooting.
HFL
This checks the 4 wire communication bus between the HandsFreeLink control unit and the audio-navigation unit.
When connection is shown with NG, check the HFL function and go to appropriate troubleshooting in HandsFreeLink System.
USB Memory Information
If the USB memory is connected to the USB port, the screen displays the USB memory size, the Product ID, Vender ID, and connection status.
Sub Display
This test checks the internal connection between the audio-navigation and HVAC switch panel and the audio display. If NG is indicated, check the serial bus line between the audio-navigation and HVAC switch panel and the audio-navigation unit.
Hard Key
This diagnosis tests the interface dial, the buttons that surround it, the audio remote switch, and the HFL-navigation voice control switch. For this model, the interface dial and buttons use the serial bus for communications.
To complete the test, touch each button on the vehicle's control panel, and move the interface dial to each indicated position. As each function is tested, the corresponding button on the display should highlight.
To exit, push in and hold the interface dial.
NOTE: You cannot use the onscreen return button to exit this function.
Select Steering Key
Select Audio Key
Select Navi Key
Yaw Sensor
This screen gives a quick test of the yaw rate sensor functionality based on the two voltages Sensor and Offset. For more information see the Yaw Rate Diagnosis.
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.
- D-RAM is NG, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
- Program Flash: Displays the version of the navigation software in memory.
- Program on HDD: If displayed, this value represents the version of the navigation software on the audio-navigation unit HDD.
- Program on DVD: If displayed, this value represents the version of the navigation software on the audio-navigation unit DVD player.
- Serial No. should be the same as the serial number found on the upperside of the audio-navigation unit. You need this number to obtain the security code from the interactive Network (iN) system.
- DB Version: Displays the version of the database on the audio-navigation unit HDD.
- HDD Version: Display the version of the audio-navigation unit HDD.
- D-RAM check is for factory use only.
Rear Camera
This test checks whether the rearview camera is connected to the navigation display unit.
When connection is shown NG, check the rearview camera signal line.
XM (Canada models)
This checks the GA-Net Bus line to the XM receiver.
When connection is shown with NG, check the connection between the XM receiver and the audio-navigation unit.
Smart Card
If the remotes are linked to the vehicle, you can check the remote condition on this screen.
HDD
This screen shows the HDD mount error and the temperature.
The screen shows a list of total and free capacities of each partition.
Select the Error History will display the error history that occurred while reading or writing the data to HDD.
- When the HDD Status is OK, the connection between the HDD pins and the audio-navigation unit are good.
- When the HDD Status is NG*, there is a connection problem between the HDD pins and the audio-navigation unit.
* When the HDD Status is NG, the screen does not show the free and total capacities of each partition, however, it shows the temperature.
DVD Mech
Do this procedure only when directed by the factory or other Honda service information (like a service bulletin).
This diagnostic screen checks the audio-navigation unit internal DVD player mechanism.
- The screen shows DVD Mech version. When the audio-navigation unit can read the version, the screen shows Connection OK. If the version number cannot be read, the screen shows the connection as NG.
- Inserting the disc that contains a DVD Mech update program allows you to select Download. Otherwise it is grayed out.
- To update the DVD Mech, you must insert the update disc before selecting this screen. If you insert the update disc when you are on this screen, the DownLoad button stays grayed out. If this happens, exit the DVD Mech screen and start the procedure again.
