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 aftermarket metallic window tinting or other objects that can block the GPS signal. Always do the Map matching Reading and Clearing Diagnostic Trouble Codes before proceeding with the troubleshooting.
- Make sure that the latest navigation software is installed.
- Check any official Honda service web site 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 -

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

NO -

Go to step 2.

2. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

3. Connect the HDS to the DLC.

4. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

5. Check for DTCs with the HDS.

Are there any DTCs present?

YES -

Troubleshoot the DTC, then recheck.�

NO -

Go to step 6.

6. Go into the Detail Information & Setting, and use the Yaw sensor test Navigation System Diagnostic Mode 1 to check the yaw rate sensor.

7. Go into the Detail Information & Setting, and use the Car Status test Navigation System Diagnostic Mode 1 to check the vehicle speed pulse.

Are the yaw rate sensor and vehicle speed pulse OK?

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 8.

NO -

If the problem is the yaw rate sensor, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation. If the problem is the vehicle speed pulse, check for an open in the VSP wire between the audio-navigation unit and the ECM/PCM. If the wire is OK, substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the problem goes away, replace the original navigation unit. If the problem does not go away, update the ECM/PCM ECM/PCM Update if it does not have the latest software, or substitute a known-good the ECM/PCM Service and Repair.�

8. Substitute a known-good navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, 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 audio-navigation unit Audio-Navigation Unit Removal/Installation.�