Part Two
Navigation System Diagnostic Mode
Car Status
Use this screen to confirm that the audio-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 (Audio-navigation unit connector A (24P) terminal No. 15)
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 audio-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 (Audio-navigation unit connector G (16P) terminal No. 4)
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 audio-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.
- IGNITION-Ignition Switch Position Indication (Audio-navigation unit connector H (28P) terminals No. 12 and No. 15)
Detects if the engine is running is running using information provided over the F-CAN bus.
a) OFF (0) when the ignition switch is in ACC (I), or press the engine start/stop button to select the ACC mode.
b) ON (1) when the ignition switch is in ON (II), or press the engine start/stop button to select the ON mode.
- ILL-Illumination Indication (Audio-navigation unit connector A (24P) terminal No. 13)
a) OFF (0) when parking lights, or headlights are off
b) ON (1) when parking lights, or headlights are on
The navigation uses the signal to determine whether to put the navigation screen into the Day or Night brightness mode. (Setup screen 1)
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. This information is passed from the gauge control module to the audio-navigation unit.
NOTE: This setting is unaffected by the display mode hard button located below and to the left of the interface dial.
Version
This screen displays the current version information for the navigation system software. In addition, this screen allows the loading of updated software if directed by the factory, or instructed by a Service Bulletin. Software may be loaded from a DVD.
- System Version: Displays the version of the audio/navigation software.
- Model: For this model, the field should begin with TK4A.
- Host uCom, Slave uCom, and Duet uCom are all for factory use.
Check any official Honda service website for more service information about the navigation system.
F-CAN System Link
F-CAN (Fast Controller Area Network) passes information between processors on the network. For example, the F-CAN network passes trip computer information between the gauge and the audio-navigation unit for the trip computer function. The F-CAN network uses a communication protocol that transmits data at 500 Kbps.
- This diagnosis must have the engine running.
- If the F-CAN shows "ERROR ACTIVE", error is not detected between F-CAN bus and the navigation unit. If any error is detected, check for diagnostic trouble codes (DTCs) for the F-CAN with the HDS (Honda Diagnostic System). The data displayed in the ID boxes is for factory use only.
- For more details on troubleshooting the F-CAN, refer to the multiplex integrated control system and the PGM-FI system.
HDD
This screen looks for problems with the navigation HDD.
- If Error Detail is reading Low Temp, check the temperature around the audio-navigation unit.
- If Error Detail is reading Write Error, replace the HDD. If the symptom does not go away, replace the audio-navigation unit.
Coverage Area
This screen allows the dealer to select the area that applies to the location of the vehicle. The choices are US (continental) or Hawaii/Puerto Rico/AK. The default is US. Select the choice (the system may reboot), exit the diagnostic mode, turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF 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.
GPS Information
This screen shows the current status of GPS reception. The circular diagram shows the current location of the GPS satellites (yellow numbers) as they would appear in the sky. The outer circle represents the horizon (0 degrees elevation). The middle and inner circles represents 30 and 60 degrees respectively. The very center of the diagram (90 degrees elevation) is directly overhead. Nearby obstructions, like tall buildings will block satellites in that direction. That is why it is necessary to be in an open area to effectively troubleshoot GPS reception issues. The satellite numbers shown on the diagram correspond to the PRN number in the GPS Details screen. There are always at least 24 active GPS satellites in orbit. Because satellites fail, and have to be removed from service, spares are always parked in orbit, ready to be activated. This is why the PRN (satellite ID number) can be greater than 24.
NOTE: When you use this screen for troubleshooting, park the vehicle outside, away from buildings, tall trees, and high-tension wires for at least 10 minutes with the engine running.
- The Number of Satellites box shows the number of acquired satellites (maximum of 12). It should contain three or more icons. If not, go to GPS icon is white or not shown troubleshooting Symptom Troubleshooting.
- The Current Position shows latitude, longitude, and elevation (in feet). If there are less than four satellites, the elevation can be grossly inaccurate.
- The Date/Time field shows the current date, and also a time that includes daylight savings and other offsets entered by the client in Setup screen 2 Adjust Time Zone/Clock.
NOTE: Pressing the MAP/GUIDE button displays the satellite number on each circle.
GPS Detail
By pressing and holding the MENU button for 2 seconds, a GPS Detail screen appears. This screen displays real time incoming satellite positional data when the vehicle is outside in the open. The information shown on this screen is for factory use.
NOTE: The data shown is an example only.
- The box TS/AS and H Dop (horizontal dilution of precision)/V Dop (vertical dilution of precision) is for factory use.
- The Speed and Direction information is updated in real time when driving.
- The Date/Time Information is the same as in Setup screen 2 Adjust Time Zone/Clock.
- If the 3D icon is shown above the yellow dots, this implies that at least four satellites are available for map positioning, and the GPS indicator on the map screen will be green. See the Global Positioning System detailed explanation in the System Description.
- If the row of data in the table below begins with a yellow dot, the AZI and EL fields can be used to locate each satellite on the circular GPS diagram (see prior screen).
The table of values shown define the terms at the top of the columns in the GPS Detail screen.
Yaw Sensor
This screen gives a quick test of the yaw sensor functionality based on the two voltages Sensor and Offset. For more information see the Yaw Rate Diagnostic.
Error History
If you select Hard Error or Soft Error, you can see the error information.
You can save the error history by connecting a USB device to the USB adapter, then select save to copy the information to the USB memory.
Functional Setup
Select the item you want to check.
- Mic Level
- HDD Ripping Restriction
- Save Users Memory
- Demo Mode
- All Clear
Mic Level
This diagnostic allows you to independently test the microphone and the TALK and BACK buttons. The TALK button is used to activate the voice control system. The microphone is located near the map light in the roof console. The microphones can now isolate the driver's voice even when there is noise or other conversations in the vehicle. To properly check the microphones, make sure you are sitting in the driver's seat.
- Press the TALK button on the steering wheel, wait until you hear a beep, and in a normal voice say "testing". The TALK indicator on the screen should momentarily turn green, and the text Now Recording... should appear in yellow. If the talk indicator shown on the screen does not briefly turn green, check the wiring from the steering wheel TALK button to the HandsFreeLink control unit. If there is no Mic Level movement when you speak, then you should check the wires running from the microphone in the roof console to the HandsFreeLink control unit and the audio-navigation unit. If the wires are OK, the microphone must be faulty; replace the microphone located in roof console HFL-Navigation Microphone Removal/Installation (With Navigation).
- Press the BACK button on the steering wheel. This should cause the Cancel indicator on the screen to momentarily turn green. If it does not briefly turn green, check the wiring from the steering wheel BACK button to the HandsFreeLink control unit.
HDD Ripping Restriction
Setting ON/OFF for recording the audio files to HDD. Refer to the owner's manual for more information about ripping music to the HDD.
HDD Ripping OFF
HDD Ripping ON
Save Users Memory
NOTE: If the HDD is good, transfer it to the new audio-navigation unit. If the HDD is NG, try this procedure to see if you can recover some information can be recovered.
When replacing the audio-navigation unit, this function allows the dealer to transfer the client's personal data to the new audio-navigation unit. The transferred information includes their Setup settings, and personal addresses. The dealer inserts a USB memory device into the USB adapter, and then selects the Save Users Memory function. The two functions in this diagnostic screen are EXPORT and IMPORT. EXPORT saves the client's data to the USB memory device, and IMPORT moves the USB memory device files to the new audio-navigation unit.
1. Select EXPORT button to move the client's data from the original audio-navigation unit to the USB memory. Select YES on the Export User Data Confirmation screen. The process takes only a couple of seconds. The system stores .DAT files on the USB memory.
NOTE: If the EXPORT button is grayed out, check the USB adapter connector.
2. After replacing the new audio-navigation unit, allow the system to boot up. Insert the USB memory device into the USB adapter and enter the Save Users Memory in the navigation system diagnostic mode.
3. Select the IMPORT button to move the two files stored by the Export process from the USB memory device to the new audio-navigation unit. Select YES on the Import User Data Confirmation screen. When the transfer is finished (a few seconds) the system automatically reboots. After the system reboots, remove the USB memory device from the USB adapter.
NOTE: If the IMPORT button is grayed out, check if the Model and the Program Flash shown on the Version screen are the same.
Demo Mode
This screen is for factory use only, and should always be set to OFF. Occasionally the DEMO setting is turned ON when vehicles are used at Auto Shows or similar events. Turning this feature on allows the navigation system to automatically follow a route to a destination when the vehicle is stationary. The Speed changes the speed of the demo mode.
Clear All
The clear all function deletes all ripped music, images, cell phone information, previous destinations, and the phonebook from the HDD.
When Clear All is selected, the system restarts after performing the Clear All process. After the restart, a normal start-up process occurs and needs GPS initialization.
If you select YES, the second confirmation screen appears.
B-CAN System Link
B-CAN (Body Controller Area Network) passes information between processors on the network. The B-CAN network uses a communication protocol that transmits data at 125 Kbps.
If the diagnostic screen reads NG, press the engine start/stop button to select the ON mode. Diagnostic trouble codes (DTCs) for the B-CAN can be retrieved with the HDS (Honda Diagnostic System). The data displayed in the ID boxes is for factory use only.
XM (HIP) System Link
This diagnostic tests the wire connections between the XM (HIP) components.
XM Status
You can check the XM status in this screen.
Error Message Table
