Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position

Vehicle position icon constantly leaves road, moves erratically, or is displayed very far from actual vehicle position

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check that the GPS antenna is plugged in.
- This is not the same condition as when driving off-road (or on a fire or logging road). This condition is caused by a loss of map matching from a bad sensor input. Check for after market window tinting or other objects that can block the GPS signal. Always do the Map Matching before proceeding with the troubleshooting.
- Make sure that the correct DVD color and version are installed.
- Inspect the DVD for dirt or damage.
- Check any official Honda service website for more service information about the navigation system.
- Check the GPS signal reception in an open area.

1. Check the GPS icon on the navigation screen.

Is the GPS icon white?

YES -

Go to GPS icon is white or not shown troubleshooting Symptom Troubleshooting.�

NO -

Go to step 2.

2. Go into the System Diagnostic Mode, and use the Yaw Rate diagnosis to check the yaw rate sensor.

Is the yaw rate sensor OK?

YES -

The condition may be normal. Check to see if the condition occurs in the same place in a known-good vehicle with the same navigation software version. If it does, the problem could be in the database. Go to step 3.

NO -

Replace the audio-navigation unit.�

3. Go into the System Diagnostic Mode, and use the Car Status test to check the VSP signal.

4. Drive the vehicle, and watch the VSP signal.

Does the VSP signal change from [0]to [1] as you drive?

YES -

The condition may be normal. Check to see if the problem occurs in the same place in a known-good vehicle. If it does, the problem could be in the database. Go to step 5.

NO -

Do the DTC 1306: Vehicle Speed Pulse troubleshooting 1306.�

5. Substitute a known-good audio-navigation unit and check to see if the problem occurs in the same place.

Does the problem occur in the same place?

YES -

The problem is in the database and should be considered a characteristic of the system. Report the problem according to the Navigation Manual under Reporting Errors.�

NO -

Replace the original audio-navigation unit.