Part 1
Navigation System Diagnostic Mode
Start-up procedure and Diagnostic Menu
Compass type
There are two ways to enter the diagnostic mode:
Mode 1:
Turn the ignition switch to ON (II). Use the navigation display hard buttons as described below:
Press and hold the MENU, MAP/GUIDE, and CANCEL buttons for about 5 seconds. The display screen goes directly to the Select Diagnosis Items menu shown below.
Mode 2:
Connect the SCS connector Component Tests and General Diagnostics to the navigation service connector located in the trunk. Turn the ignition switch to the ON (II) position. The display goes directly to the diagnostic menu screen shown below.
NOTE: When finished troubleshooting, make sure to remove the SCS connector.
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)
- GPS Information
- Yaw Rate
- Tire Calibrate
- Functional Setup
- Version
Navi System Link
Compass type
- 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 (navigation 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 shows 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 a 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.
- Select Return to return to the Diagnosis Menu.
USA models
Alaska models
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.
Start-up procedure and Diagnostic Menu
Map type
NOTE: Check the vehicle battery condition first Testing and Inspection.
There are two ways to enter the diagnostic mode:
Mode 1:
Start the vehicle, and at the disclaimer screen use the navigation display hard buttons as described below:
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)
Mode 2:
Start the vehicle. When the globe screen appears, connect the SCS service connector Component Tests and General Diagnostics to the navigation service connector located behind the navigation unit in the trunk. The screen changes to the System Links screen and automatically begins running the self diagnostic. See the System Links section for more information.
NOTE: When finished troubleshooting, make sure to remove the SCS service connector.
System Links
Map type
1. Enter this screen by connecting the SCS service connector or by selecting Self Diagnosis Mode from the navigation screen main menu. The message at the bottom of the screen flashes indicating the diagnostic is running. Make sure you enter the audio anti-theft code.
NOTE:
- The system cannot complete a full diagnosis unless the engine is running.
- DTC 1501 and/or 2703 can be stored when the ignition switch is at ACCESSORY (I). With the ignition switch in ACCESSORY (I), the A/C unit is turned off and the navigation unit loses communication and stores DTCs. Therefore, there is a possibility that the system is normal even though DTC 2703 is stored. Check system links with the engine running, and if it appears normal, the system is OK at this time.
USA models
Hawaiian models
Canada models
2. Rotate the interface dial to select the icon you want to diagnose. Push in the selector 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 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 bong sound produced by the 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 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 diagnostic.
Each icon color is explained in the table below.
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 on the ignition. You may also see this screen if you recently replaced the navigation unit.
When a navigation unit is powered up for the first time at the factory or after replacement with a new or remanufactured 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.
Map type (USA models)
Map type (Hawaiian models)
Map type (Canada models)
Compass type (USA models)
Compass type (Alaska models)
Follow the steps below to prevent the screen from showing in the future:
- Press and hold the MENU, MAP/GUIDE, and CANCEL buttons for about 3 seconds. The Select Diagnosis.
- 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.
Detailed Information & Settings
These section allows you to run a 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.
Monitor Check
Overview of navigation display unit
- The navigation display unit communicates with the navigation unit over its own GA-Net bus. Information sent by the 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 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 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 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.
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 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 (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.
- Aircon
- Smart Card
- XM (Canada models)
- PC Card Info.
- Hard Key
- Yaw Sensor
- DVD
- Rear Camera
- HFL
USA and Hawaiian models
Canada models
Display
This diagnostic does additional checks on the communication bus between the control unit and the display. This test also checks the internal electronic functions.
- When the connection is NG, first check for loose terminals at the navigation unit and the navigation display unit connections. Next check for an open or short in the communication line between the navigation unit and the navigation display unit. If you find the line has an open or a short, replace the affected shielded harness.
- If the ROM or RAM is NG, replace the navigation display unit Service and Repair.
- The version represents the software version in the display.
Radio
This test checks connection between the audio unit and the navigation system. If NG is indicated, check for loose audio unit connectors.
NOTE: If the XM link appears red, but the radio link appears green in the navigation System Links, refer to audio system symptom troubleshooting.
GPS
If GPS indicates NG (ANT), then check the entire GPS antenna wire from the 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 Service and Repair. If the diagnostic still reads NG (ANT), replace the navigation unit Service and Repair.
Select information to see the GPS satellite details.
ECU Info.
This screen looks for problems in the navigation unit. When you initiate this diagnosis, the 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 navigation unit Service and Repair.
- DVD lid displays the state of DVD Lid of navigation unit.
- Program Flash: Displays the version of the navigation software in memory.
- Program on DVD: If displayed, this value represents the version of the navigation software on the navigation 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 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 client's settings, personal information, GPS orbital data, and anything else stored in memory.
Aircon
This diagnostic tests the climate bus connection (AC-SI and AC-SO) between the navigation unit and climate control unit. This test does not check the system components, only the connections. Make sure the engine is running for this test.
NOTE: It this test is run with the ignition switch in ACCESSORY (I), the result will be NG.
Smart Card
If the remotes are linked to the vehicle, you can check the remote card condition on the this screen.
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 unit.
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.
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.
