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. 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 Reading and Clearing Diagnostic Trouble Codes 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 - Do the GPS icon is white or not shown. Symptom Troubleshooting

NO - Go to step 2.


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

3. Go into the System Diagnostic Mode, and use the Car Status diagnosis Navigation System Diagnostic Mode 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 4.

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 wire between the audio-navigation unit and the ECM/PCM (VSP signal). If the wire is OK, substitute a known-good audio-navigation unit and recheck. If the problem goes away, replace the original audio-navigation unit. If the problem is still present, update the ECM/PCM; R18A1 engine, ECM/PCM Update K20Z3 engine ECM/PCM Update if it does not have the latest software, or substitute a known-good ECM/PCM; R18A1 engine, Reading and Clearing Diagnostic Trouble Codes K20Z3 engine. Reading and Clearing Diagnostic Trouble Codes


4. Substitute a known-good audio-navigation unit, 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 under Reporting Errors.

NO - Replace the original audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)