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 12 Volt Battery Test.
- 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.

1. Check the GPS icon on the navigation screen.

Is the GPS icon white?

YES -

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

NO -

Go to step 2.

2. Go into the System Diagnostic Mode, select the Detail Information & Settings, and use the Yaw Rate test to check the audio-navigation unit internal yaw rate sensor.

Is the yaw rate sensor OK?

YES -

The problem may be a characteristic of the system. Check to see if the problem 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 Audio-Navigation Unit Removal/Installation.

3. Go into the System Diagnostic Mode, select the Detail Information & Settings, 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.

Does the VSP signal change from [0] (stopped) to [1] (driving) as you drive?

YES -

The problem may be a characteristic of the system. 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 Audio-Navigation Unit Removal/Installation 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 -

Try to duplicate the problem in a known-good vehicle. If the problem can be duplicated, the problem is in the database. Report the problem according to the Navigation System Manual under Reporting Errors.

NO -

Replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.