Reading and Clearing Diagnostic Trouble Codes
Control System DTCs
How to Troubleshoot the Navigation System
How to Troubleshoot the Navigation System
General Operation
Refer to the Navigation Manual for the navigation system operating procedures.
Anti-Theft Feature
The navigation system has an auto anti-theft protection circuit. When any of these actions occur, the unit enters its anti-theft mode:
* Disconnecting the battery.
* Disconnecting the audio-navigation unit connector A (24P).
* Removing the No. A1-6 (100 A) fuse or the No. A29 (10 A) fuse from the under-hood fuse/relay box.
After service, reconnect power to the audio-navigation unit, and turn the ignition switch to ON (II). There are two ways to exit the anti-theft mode:
* Press and hold the VOLUME/POWER (Power) knob for at least 2 seconds. The audio-navigation unit automatically exits the anti-theft mode. If the audio-navigation unit does not exit anti-theft mode, like in cases where a known-good unit (including the SD module) was substituted for testing, enter the anti-theft code.
* Enter the 5-digit anti-theft code.
If the code is lost or unavailable, you can get the code from the iN using the audio-navigation unit serial number. The serial number can easily be obtained without removing the audio-navigation unit. To get the serial number and the code, do the following:
* Press and hold the MAP/GUIDE, the DEST, and the CANCEL buttons at the same time.
* At the select diagnosis items screen, select Detail Information & Setting, select Unit Check, then Navi ECU. The system runs a brief diagnosis, then the audio-navigation unit serial number is displayed.
* Use the anti-theft code inquiry option on the iN to look up the 5-digit anti-theft code. The iN may display more than one code for a given serial number. This is because serial numbers are not unique. You may have to try more than one 5-digit code. If no code is shown, or if the code(s) given do not work in the audio-navigation unit, contact the Automobile Warranty department.
The SD module and audio-navigation unit are mated to each other and can only be mated to a new unit. If someone tried to put a stolen SD module in another audio-navigation unit, or insert their SD module in a stolen audio-navigation unit, the two components cannot mate and a SD module read error appears on the display.
When replacing the audio-navigation unit, be sure to give the customer the new anti-theft security code.
Symptom Diagnosis
Certain circumstances and system limitations may result in occasional vehicle positioning errors. Some customers may think this indicates a problem with the navigation system when, in fact, the system is normal. Keep the following items in mind when interviewing customers about symptoms of the navigation system.
Self-Inertial Navigation Limitations
The limitations of the self-inertial portion of the navigation system (the gyro and the vehicle speed signal) can cause discrepancies between the vehicle's actual position and the indicated vehicle's position (GPS vehicle position).
The following circumstances may cause vehicle positioning errors:
* Moving the vehicle with the engine stopped and the vehicle stopped, such as by ferry or tow truck, or if the vehicle is spun on a turn table.
* Tire slippage, changes in tire rolling diameters, and some driving situations may cause discrepancies in travel distances. Examples of this include;
- Continuous tire slippage on a slippery surface
- Driving with snow chains mounted
- Abnormal tire pressure
- Incorrect tire size
- Frequent lane changes across a wide highway
- Very bumpy roads
* Tolerances in the system and map inaccuracies sometimes limit how precisely the vehicle's position is indicated. Examples of this include;
- Driving on roads not shown on the map (map matching is not possible)
- Driving on a road that winds in one direction, such as a loop bridge, an interchange, or a spiral parking garage
- Driving on a road with a series of sharp hair-pin turns
- Driving near a gradual highway exit or transition
- Driving on one of two close parallel roads
- Making many 90 degree turns
Global Positioning System (GPS) Limitations
The GPS cannot detect the vehicle's position or elevation during the following instances:
* For the first 5 to 10 minutes after reconnecting the battery (this process can take as long as 45 minutes).
* When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, inside parking structures or large trucks.
* When the GPS antenna is blocked by metallic window tinting or by an object placed above it in the vehicle. The GPS antenna requires a clear unobstructed view of the sky.
* When there is no satellite signal output (signal output is sometimes stopped for satellite servicing).
* When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (amp, CD players/changers, radar detectors, theft recovery systems, etc.) and cell phones placed near the navigation system.
The accuracy of the GPS is reduced during these instances:
* Metallic window tinting above the GPS antenna.
* When only three or fewer satellite signals are received (Four satellite signals are required for accurate positioning).
* When driving near high tension power lines.
* When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (amp, CD players/changers, radar detectors, theft recovery systems, etc.) and cell phones placed near the navigation system.
* When the satellite control centers are experiencing problems.
Muting Logic
Whenever the navigation system is giving guidance, outputs of all the speakers except the front speakers are decreased. When the voice control system is being used, all of the speakers are muted. If the HandsFreeLink is in use, the voice control system is unavailable.
LCD Unit Limitations
The screen is touch sensitive. Touch the display directly to select items on the screen.
* In cold temperatures, the display may stay dark for the first minute until it warms up.
* When the display is too hot because of direct summer sunlight, it remains dark until the temperature drops (you may see an error message displayed stating this fact).
* When the humidity is high and the interior temperature is low, the display may appear cloudy. The display will clear up after some use.
* Fingerprints on the screen may be noticeable. Clean the screen with a soft, damp cloth. You may use a mild cleaner intended for eye glasses or computer screens. To avoid scratching the panel, do not rub too hard or use abrasive cleaners or shop towels.
Symptom Duplication
When the symptom can be duplicated, verify that it is not a characteristic of the system. Review the Navigation Manual and compare it to a known-good vehicle (with the same software and database), under the same conditions. If the symptom is not the same as the known-good vehicle, follow the self-diagnostic procedures and the appropriate troubleshooting procedures.
When the symptom does not reappear or only reappears intermittently, ask the customer about the conditions when the symptom occurred.
* Always ask the customer to demonstrate the problem.
* Try to establish possible user error or misunderstanding of the system.
* Try to establish if outside interference may have been the cause.
* Vibration, temperature extremes, and moisture (dew, humidity) are factors that are difficult to duplicate.
* Inspect the vehicle for after-market electronic devices (vehicle locators, amps, radar detectors, etc.) that may be hidden.
NOTICE
When troubleshooting navigation system problems, ensure that the known-good vehicle is the same software version year and model as the vehicle being serviced. Mixing incompatible navigation systems or other system components can delay the troubleshooting process by creating symptoms or issues unrelated to the original problem.
Audio-Navigation Unit and SD Module Service Precautions
Contrary to previous generations of DVD navigation systems, the audio-navigation unit and the SD module cannot be substituted separately for testing purposes. You can substitute a combined audio-navigation unit and SD module with a known-good combined audio-navigation unit and SD module. When the audio-navigation unit and the SD module are connected to a vehicle, and powered up for the first time, the audio-navigation unit and the SD module go through a mating process where the SD module writes the audio-navigation unit's serial number to its memory. The audio-navigation unit and the SD module are available separately.
When you get a replacement audio-navigation unit, it does not come with an SD module, but the unit is able to mate one time to an SD module. When you connect the audio-navigation unit to the SD module and power it up for the first time, the two components are mated. Once the audio-navigation unit is mated, it does not accept an SD module that is already mated to another audio-navigation unit. It does accept a new SD module.
The SD module is removable from the audio-navigation unit. If the audio-navigation unit is replaced, install the original SD module into the new audio-navigation unit. When you transfer the SD module, all the customer's settings, music, and photographs are transferred.
The SD module is able to mate more than once, allowing you to transfer the SD module with the customer's information to a new audio-navigation unit. The SD module must mate to a new audio-navigation unit. It cannot mate to an audio-navigation unit that has been mated to another SD module.
A new audio-navigation unit is defined as a unit that has not been mated to an SD module. A new unit may be new or remanufactured.
If you need to replace the SD module, there is no way to transfer customer data, music, or pictures to a new SD module. Explain to your customer that their music and personal information is not transferable. The navigation system has the Save Users Memory function available, but Honda does not recommend using it. If the SD module is OK, install it in the new audio-navigation unit, and it will automatically transfer all the customer's information and settings.
If you need to replace the SD module, you can try to back-up the navigation data (if possible) and transfer it to the new SD module. See Save Users Memory. The Save Users Memory function only copies customer settings and phone information. There is no way to copy or transfer music and photographs that are saved on the SD module to a new SD module. Explain to your customer that this information is not transferable and will be lost.
* When the battery is disconnected, the internal GPS clock resets to 0:00. The clock resets to the correct time after the system finishes GPS initialization.
* Before disconnecting the battery, obtain any PGM-FI or A/T DTCs and freeze frame data (which are lost when the ECM/PCM loses power).
* After reconnecting the battery, you have to wait to get the initial signal from the satellite. It will take from 10 to 45 minutes.
* Adjust the setup clock settings (time zone and daylight savings) in the navigation system.
System Initialization
If the navigation system loses power (like the battery was disconnected), the navigation system requires initialization. Once completed, your system is ready to use.
This initialization requires the following:
* Press and hold the VOLUME/POWER knob for at least 2 seconds. The audio-navigation unit exits the anti-theft mode. Or you can enter the 5-digit anti-theft code.
* GPS initialization (may not be needed depending of the length of time the system was without power).
* Map matching aligns the GPS to a location on the map.
GPS Initialization
NOTE: You must park the vehicle outside with a clear view of the sky.
Depending on the length of time the battery was disconnected, your system may require GPS initialization. If it does, the CSF screen appears:
If this procedure is not necessary, the system proceeds directly to the Disclaimer screen. During initialization, the system searches for all available GPS satellites, and obtains their orbital information. Park the vehicle out in the open with a clear view of the sky for this procedure.
If the navigation system finds the satellites properly, the CSF screen changes to the Disclaimer screen. If within 10 minutes the system fails to locate a sufficient number of satellites to locate your position, the confirmation screen appears.
If this screen appears, turn off the engine, then restart the vehicle and move it to a different location. If the Disclaimer screen appears, the GPS initialization is complete.
NOTE:
* The average acquiring time is less than 10 minutes, but it can take as long as 45 minutes.
* If the system is still unable to acquire a signal, follow the instructions on the screen. If this screen appears again, go to GPS icon is white or not shown troubleshooting.
* Skip a CSF screen by pressing the DEST and the ZOOM OUT buttons at the same time and you can move to a System Links screen.
Map Matching
This part of the initialization matches the GPS coordinates with a road on the map screen. To do this part of the procedure, make sure that the navigation system displays a map, and drive the vehicle on a mapped road shown on the map screen. Do not enter a destination at this time. When the name of the current road you are driving on appears at the bottom of the screen, the entire procedure is complete. Your system is now ready to use.
Ordering Update Navigation Software
If the customer wants a yearly navigation software, update, there are two ways to purchase one. They can either call 888-549-3798, or order on-line at www.hondanavi.com.
When customers order an update navigation software, they need:
* VIN
* Device number (found on the System/Device Information screen)
* Credit card
Update navigation software is available for purchase usually in the fall of each year. They may contain the following:
* Enhanced maps and points of interest (POI) coverage
* Fixes for minor software bugs
* Additional features
The update is loaded on a USB device which is mailed to the customer along with the password.
When the customer receives the USB device with the update, insert the USB device into the USB update port located in the passenger's dashboard area behind the glovebox. The customer is prompted to enter the password that is shipped with the update USB device. The navigation system automatically updates the navigation software.
NOTE: The update USB device is designed to update the vehicle with the submitted VIN. If a customer has more than one vehicle that needs updating, they need to order a separate update USB device for that vehicle.
Never promise your customer future free updates. There are no free programs for updating the navigation software. Updates are generally available for purchase each fall. The online navigation software order site provides information when an update is available.
How to Answer Customer Questions about Navigation Coverage
Some customers may ask questions regarding a city, address, or POI (point of interest) covered by the navigation system. It is better to verify a coverage question on an actual vehicle than to disappoint your customer by promising coverage that may be incomplete or missing in their area. The following suggestions can be used to answer coverage inquiries from your customer.
Is my address covered by the navigation system?
Using a current production vehicle (of the same model), and enter the customer's address (street first) to see if their area is covered. Always enter the street first, because sometimes their city may be included in a neighboring township, or under some larger metropolitan city name. If the address is shown in a later year vehicle, but not your customer's vehicle, you might recommend that your customer purchase an update.
Is my city covered by the navigation system?
For general questions about whether a city is covered, view the map coverage link on the navigation software order site. On the site, select a year, and select a model, then click on the Coverage link. You then select a state or province, and the cities are listed. This does not guarantee that the customer's road or address is in the system. Verifying on an actual production vehicle is always the best guarantee that your information is accurate.
The gas station on my corner is now a restaurant. Why is it still incorrect in the navigation system?
For POI-related customer questions, explain that businesses are constantly moving, and there can be a considerable lag in updating the millions of POIs in the system. The database is updated annually, and the best way to the verify whether the POI is accurate is verify the inquiry on a current production vehicle.
Answers to these and other questions regarding coverage can be found in these locations:
* In the Frequently Asked Questions section of the Navigation Manual.
* At the online navigation software order site, by clicking on the FAQs link.
How do I find the local address of a business that is part of a national chain (for example, Starbucks)?
There are three ways to find the local address to businesses:
* If you know the phone number of the business, select Phone Number and enter the 10 digit phone number (area code plus seven digit number).
* Select Category, then Restaurant. Enter the keyword Star. The resulting list includes all restaurants that have the letters Star anywhere in the name.
* Select Name and enter Starbucks. For more common business names, like McDonalds, you may have to search through a list that includes other businesses like McDonalds Welding, McDonalds Automotive, etc.
Lever-Locked Connector
Disconnecting
To disconnect the connector, pull the lever (A) while pushing the lock tab (B) down, then pull the connector (C).
Connecting
To connect the connector, push the connector into the connector sleeve (A). As the connector is pressed in, the lever (B) moves to the locked position.
How to Check Error History (Navigation DTCs)
NOTE: The navigation DTCs cannot be retrieved with the HDS.
The Error History feature is to record intermittent navigation issues that occur while the customer is using the system. Sometimes the customer complaint cannot be duplicated. The error history may record the information needed to diagnose the problem. To check the error history:
1. Start the engine.
2. Press and hold the MAP/GUIDE, the DEST, and the CANCEL buttons for 3 seconds.
3. When the Select Diagnosis Items menu appears, select the Self-Diagnosis Mode.
4. When the audio-navigation unit has hard error codes, the Error History icon appears yellow when the Self-Diagnosis Mode (System Links) screen is displayed. When no hard error codes are stored, the icon appears gray. To view the errors with their navigation DTC, select the Error History icon.
5. Select Hard Error in the Error History menu.
NOTE: Soft Error is for factory use only.
6. The Hard Error screen displays the following information for each error:
* The navigation DTC for the error.
* A brief description of the navigation DTC.
* The date and time when the error occurred.
NOTE: The Save feature is for factory use only.
7. Use the navigation DTC Troubleshooting table to troubleshoot the error. Select Return to exit the Error History main menu.
How to Clear Error History
1. Turn the ignition switch to ON (II).
2. Press and hold the MAP/GUIDE, the DEST, and the CANCEL buttons for 3 seconds.
3. When the Select Diagnosis Items menu appears, select the Detail Information & Setting.
4. Select the Error History under the Detail Information & Setting menu.
5. Select Hard Error in the Error History menu.
NOTE: Soft Error is for factory use only.
6. Select Clear in the Hard Error.
NOTE:
* By selecting Clear, all hardware errors stored in history are erased at the same time.
* The Save feature is for factory use only.
* Write down the navigation DTCs before deleting.
7. The confirmation screen appears, then selects YES. All Hard Error history are cleared. The system returns to the Error History menu automatically.
