Symptom Troubleshooting

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

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

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check any official Honda service website for more service information about the navigation system.
- 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.
- Check the GPS signal reception in an open area.
- Make sure the correct navigation DVD (color and version) is installed.
- Inspect the navigation DVD for dirt or damage.

1. Check the GPS icon on the navigation map screen.

Is the GPS icon white?

YES -

Do the troubleshooting for GPS icon is white or not shown Symptom Troubleshooting.�

NO -

Go to step 2.

2. Go into the Diagnostic Menu, and use the Yaw Rate test to check the navigation unit internal 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 navigation unit Service and Repair.�

3. Go into the Diagnostic Menu, and use the Car Status test to check the vehicle speed pulse.

4. With the help of an assistant drive the vehicle and watch the VSP signal.

5. 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 condition occurs in the same place in a known-good vehicle. If it does, the problem could be in the database. Go to step 6.

NO -

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

6. Substitute a known-good navigation unit Service and Repair with the same software version, 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. Report the problem according to the Navigation System Manual under Reporting Errors.�

NO -

Replace the original navigation unit Service and Repair.�