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System Diagnostic ModeStart-up procedure and Diagnostic Menu
There are two ways to enter the diagnostic mode:
1. Connect the SCS connector to the navigation service connector located in the trunk. Turn the ignition switch to the ON (II) position. The display will go directly to the diagnostic menu screen shown below.
NOTE: When finished troubleshooting, make sure to remove the SCS connector.
2. Turn the ignition switch ON (II). Use the navigation display hard buttons as described below:
Make sure the battery is connected then press and hold the three buttons (Menu, Map/Guide, and Cancel), and keep them pressed for approximately 5 seconds. The display screen will go directly to the "Select Diagnosis Items" menu shown below.
3. After the display changes to the Select Diagnosis Items menu, select the item you want to check and the diagnostic will start. To return to the previous screen, select "RETURN".
- Navi System (Link)
- Monitor Check
- Unit Check
- Car Status
- F-CAN (System link)
- Coverage area
- GPS Information
- Yaw Rate
- Tire Calibrate
- Functional Setup
- Version
- XM (HIP)
Factory diagnostic screen "In Line Diag"
When a navigation control unit is powered up for the first time at the factory, the "factory diagnosis" screen (In Line Diag) shows up. Normally the factory performs the steps necessary to verify proper operation and terminate the "factory diagnostic".
Until the proper confirmation sequence is performed, the screen will show up every time the vehicle is started.
Follow the steps below to prevent the screen from showing up in the future:
- Hold down the buttons (Menu + Map/Guide + Cancel) for about 5 seconds (the "Select Diagnosis items" screen appears).
- Hold down the Map/Guide button for 5 - 10 seconds (a screen with a "Complete" button, appears).
- Touch "Complete", and then the "Return" button (the system may re-boot).
- Restart the vehicle, and confirm normal operation by completing the "TQI of the Navigation System" Service Bulletin.
Navi System Link
- This diagnostic tests the cables connecting the navigation components. Ensure that the ignition switch is in the ON (II) position. When the diagnostic begins you hear a "bong" sound. The system is in a "Detecting" mode, and is waiting for all items in white to be tested. This includes the navigation voice control (TALK/BACK) buttons, and microphone. Press the navigation TALK button on the steering wheel, and in a normal voice, say "testing." The Talk indicator on the screen should turn green, and the voice level indicator should move to at least the 6th bar to pass. Next, press the navigation BACK button. The "Cancel" indicator should turn green.
- If all of the communication lines connecting the system components, and the navigation TALK/BACK buttons/microphone check out OK (all block diagram items green), then the "OK" indicator turns green.
- If there is a problem with the system, the faulty system component item turns to red, and the screen will show "NG" in red. Use the troubleshooting index, and other diagnostic screens to help locate the problem.
- The indication on the screen may not change until you cycle the ignition switch. After repairing the affected cable or system, repeat this diagnostic.
NOTE:
- Green boxes and green "OK" indicate that the communications lines (cables) are intact. This diagnostic does not necessarily imply that the individual components are functioning properly. For instance, the GPS antenna wire may be crushed, but still show as "green." A road test, or other diagnostic may be necessary to find the problem.
- Compass type is not equipped with TALK/BACK buttons and the microphone.
- Select "Return" to return to the Diagnosis Menu.
NOTE:
- The mic level indicator must reach the 6th bar or greater to pass the test.
- If the XM link is red or flashing red, go to audio system symptom troubleshooting, or see XM (HIP) diagnostic screen.
Monitor Check
Overview of display unit
- The display unit communicates with the navigation unit over its own GA-Net bus. Information sent by the navigation unit to the display unit includes commands to control the LCD back light.
- The navigation unit also sends navigation and rear camera video information to the screen using Red, Green, Blue and Composite Video signals.
- The security system protects the display by daisy-chaining the security signal through it, and then passing the signal to the audio unit.
- The illumination input from the gauge brightness control provides back lighting for the buttons surrounding the screen.
These screens allow you to troubleshoot the 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 be shown 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. If the picture has lines in it or scrolls horizontally, or vertically, troubleshoot for a Composite sync problem.
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.
White Raster
The entire display must be white.
Black Raster
The entire display must be black.
Color Pattern
The chart below 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.
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.
Unit Check
To start the test, select the item you want to check.
Display
This diagnostic performs additional checks on the communication bus between the control unit and the display. In addition, the internal electronics 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 you find the line 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 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.
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, 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. You can find this information either in 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 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 erase the client'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 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 interface dial, and the buttons that surround it. For this model, the interface dial and buttons do not use the GA-Net 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 you test each function, the corresponding button on the display should highlight. To exit, push in and hold the selector knob.
Aircon Diag
Indicates received data from the climate control unit after running the climate control self-diagnostic function.
Smart Card
If the smart card is being used, you can check the card condition.
Car Status
Use this screen to confirm that the navigation unit is properly receiving input signals. Signals equal to (0) are OFF, and signals equal to (1) are ON. If the value on the display does not match the actual vehicle status, then check the wire carrying the signal.
- VSP-Vehicle Speed Pulse from PCM (Pin 6 of C-connector)
a. OFF (0) when vehicle is not moving
b. ON (1) when vehicle is moving
The VSP comes from the PCM as a dedicated signal. Internally, the navigation unit compares the actual VP on the map against street data to adjust the pulse to speed scaling factor. As this scaling factor becomes more accurate, the "Level" gradually increases from 0 to 10 (see the Tire Calibrate diagnostic screen).
- BACK-Reverse indication from taillight relay (Pin 5 of C-connector)
a. OFF (0) when the shift lever is in any position other than reverse
b. ON (1) when the shift lever is in reverse
The Back signal is used by the navigation unit to allow the map screen to show the VP moving backwards when in reverse. This signal is needed because the Speed Pulse has no direction indication.
ILL CANCEL
This item detects whether the "illumination cancel" function is in use.
a. OFF (0) if illumination cancel is not selected
b. ON (1) if illumination cancel is activated
The illumination cancel function is activated by increasing the dash brightness to "MAX" using the "+" button. The CAN bus passes this information from the gauge control module to the navigation control unit.
NOTE: This setting is unaffected by the "display mode" hard button located below and to the left of the interface dial.
- ILL-Illumination Indication
(Pin 5 of navigation unit A-connector)
a. OFF (0) when parking lights, or headlights are off
b. ON (1) when parking lights, or headlights are off
This signal is used by the navigation unit to determine whether to put the navigation screen into the Day or Night brightness mode (Setup screen 1).
- DVD Lid-senses if DVD door is open
a. (Close) when door is closed
b. (Open) when door is open
The navigation unit has a micro switch to detect this. If open is indicated when the door is closed, replace the navigation unit.
F-CAN System Link
F-CAN (Fast Controller Area Network) passes information between processors on the network. For example, the F-CAN network is used to pass charging system signals between the PCM and the navigation unit for the trip computer cooling fan function. The F-CAN network uses a communication protocol that transmits data at 500 Kbps.
- If the diagnostic screen below reads NG with the ignition switch ON (II), then you can use the HDS (Honda Diagnostic System) to retrieve the diagnostic trouble codes (DTC) from the F-CAN. The data displayed in the ID boxes is irrelevant.
- For more details on troubleshooting the F-CAN, refer to the multiplex system.
Coverage Area
This screen allows the dealer to select the area that applies to their location. The choice is US (continental) or Hawaii. The default is "US." Select the choice (the system may reboot), exit the diagnostic mode, and restart the vehicle.
NOTE: This function is designed to operate only when the vehicle is physically located in the coverage area you select.
