Symptom Troubleshooting

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.

- 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 How to Troubleshoot the Navigation System (With Navigation) 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 troubleshooting for 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 retest.

NO - Go to step 6.


6. Go into the Self-Diagnosis Mode, and use the Yaw sensor test Navigation System Diagnostic Mode (With Navigation) to check the yaw rate sensor.

7. Go into the Self-Diagnosis Mode, and use the Car Status test Navigation System Diagnostic Mode (With Navigation) 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 (With Navigation) If the problem is the vehicle speed pulse, check for an open in the VSP wire between the audio-navigation unit and the PCM. If the wire is OK, substitute a known-good audio-navigation unit (including the HDD), Audio-Navigation Unit Removal/Installation (With Navigation) and retest. If the problem goes away, replace the original navigation unit. If the problem does not go away, update the PCM PCM Update if it does not have the latest software or substitute a known-good the PCM. PCM Replacement


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